Relevant bibliographies by topics / Aerospace engineering, n.e.c

Academic literature on the topic 'Aerospace engineering, n.e.c'

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Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Aerospace engineering, n.e.c"

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Kuzmič, Samo, Martina Hrast, and Rok Frlan. "The Synthesis of (2R)-Aziridine-2-carboxylic Acid Containing Dipeptides." Acta Chimica Slovenica 69, no. 2 (June 15, 2022): 261–70. http://dx.doi.org/10.17344/acsi.2021.6673.

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Optimized conditions for the synthesis of fully deprotected (2R)-aziridine containing dipeptides are described. Preparation of fully protected N- and C- terminal aziridine containing dipeptides was found to be straightforward and high yielding for the majority of compounds, whereas their full deprotection was possible only for C-terminal analogs. Deprotection of N-terminal derivatives using standard procedures of peptide chemistry was found difficult providing only mixtures of unidentifiable products. The described molecules have potential as building blocks in synthetic chemistry, in the chemical biology arena, as covalent modifiers, and as biomarkers.
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Baldimtsi, Foteini, Panagiotis Chatzigiannis, S. Dov Gordon, Phi Hung Le, and Daniel McVicker. "gOTzilla: Efficient Disjunctive Zero-Knowledge Proofs from MPC in the Head, with Application to Proofs of Assets in Cryptocurrencies." Proceedings on Privacy Enhancing Technologies 2022, no. 4 (October 2022): 229–49. http://dx.doi.org/10.56553/popets-2022-0107.

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We present gOTzilla, a protocol for interactive zero-knowledge proofs for very large disjunctive statements of the following format: given publicly known circuit C, and set of values Y = {y1 , . . . , yn }, prove knowledge of a witness x such that C(x) = y1 ∨ C(x) = y2 ∨ · · · ∨ C(x) = yn . These type of statements are extremely important for the proof of assets (PoA) problem in cryptocurrencies where a prover wants to prove the knowledge of a secret key sk that associates with the hash of a public key H(pk) posted on the ledger. We note that the size of n in popular cryptocurrencies, such as Bitcoin, is estimated to 80 million. For the construction of gOTzilla, we start by observing that if we restructure the proof statement to an equivalent of proving knowledge of (x, y) such that (C(x) = y) ∧ (y = y1 ∨ · · · ∨ y = yn )), then we can reduce the disjunction of equalities to 1-out-of-N oblivious transfer (OT). Our overall protocol is based on the MPC in the head (MPCitH) paradigm. We additionally provide a concrete, efficient extension of our protocol for the case where C combines algebraic and non-algebraic statements (which is the case in the PoA application). We achieve an asymptotic communication cost of O(log n) plus the proof size of the underlying MPCitH protocol. While related work has similar asymptotic complexity, our approach results in concrete performance improvements. We implement our protocol and provide benchmarks. Concretely, for a set of size 1 million entries, the total run-time of our protocol is 14.89 seconds using 48 threads, with 6.18 MB total communication, which is about 4x faster compared to the state of the art when considering a disjunctive statement with algebraic and non-algebraic elements.
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Ren, Zhaoxin, Bing Wang, and Fan Zhang. "Effects of Flow Compressibility on Two-Phase Mixing in Supersonic Droplet-Laden Flows." International Journal of Aerospace Engineering 2020 (December 7, 2020): 1–13. http://dx.doi.org/10.1155/2020/8815205.

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This research addresses a numerical analysis on the effects of flow compressibility on the characteristics of droplet dispersion, evaporation, and mixing of fuel and air according to the simulation of the spatially developing supersonic shear flows laden with evaporating n-decane droplets. A sixth-order hybrid WENO numerical scheme is employed for capturing the unsteady wave structures. The influence of inflow convective Mach number ( M c ), representing the high-speed flow compressibility, on the two-phase mixing is analyzed, in which M c is specified from 0.4 to 1.0. It is found that the shearing vortex is compressed spatially as M c increases, associated with the alternate distributions of compression and expansion regimes in the flow field. The flow compressibility changes not only the vortex structures but also the aerothermal parameters of the shear flows, and further influences the dispersion and evaporation of droplets. The two-phase mixing efficiency is observed to decrease as M c increases.
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Urbahs, Aleksandrs, Konstantins Savkovs, Margarita Urbaha, and Kristine Carjova. "HEAT AND EROSION-RESISTANT NANOSTRUCTURED COATINGS FOR GAS TURBINE ENGINES." Aviation 17, no. 4 (December 24, 2013): 137–44. http://dx.doi.org/10.3846/16487788.2013.861225.

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This work analyses the characteristics of functional coatings obtained by vacuum ion-plasma sputtering. These coatings have three-layer multiphase structure created as a result of condensing aluminium and titanium according to a certain programme. The article presents the results of investigation into the heat-resistance of ion-plasma coatings based on Ti-Al-N for titanium alloy parts of gas turbine engines. Analysis of the oxidation process between a sample surface and coatings within the range of 500–825 °C was carried out. The basic features of the process of coating destruction under high-temperature oxidation conditions were determined by means of scanning electron microscopy. The results of the tests made it possible to state that the coatings developed are able to operate at temperatures of 600–750 °C.
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Dayama, Pankaj, Arpita Patra, Protik Paul, Nitin Singh, and Dhinakaran Vinayagamurthy. "How to prove any NP statement jointly? Efficient Distributed-prover Zero-Knowledge Protocols." Proceedings on Privacy Enhancing Technologies 2022, no. 2 (March 3, 2022): 517–56. http://dx.doi.org/10.2478/popets-2022-0055.

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Abstract Traditional zero-knowledge protocols have been studied and optimized for the setting where a single prover holds the complete witness and tries to convince a verifier about a predicate on the witness, without revealing any additional information to the verifier. In this work, we study the notion of distributed-prover zero knowledge (DPZK) for arbitrary predicates where the witness is shared among multiple mutually distrusting provers and they want to convince a verifier that their shares together satisfy the predicate. We make the following contributions to the notion of distributed proof generation: (i) we propose a new MPC-style security definition to capture the adversarial settings possible for different collusion models between the provers and the verifier, (ii) we discuss new efficiency parameters for distributed proof generation such as the number of rounds of interaction and the amount of communication among the provers, and (iii) we propose a compiler that realizes distributed proof generation from the zero-knowledge protocols in the Interactive Oracle Proofs (IOP) paradigm. Our compiler can be used to obtain DPZK from arbitrary IOP protocols, but the concrete efficiency overheads are substantial in general. To this end, we contribute (iv) a new zero-knowledge IOP Graphene which can be compiled into an efficient DPZK protocol. The (D + 1)-DPZK protocol D-Graphene, with D provers and one verifier, admits O(N 1 /c ) proof size with a communication complexity of O(D2 ·(N 1−2 /c +Ns )), where N is the number of gates in the arithmetic circuit representing the predicate and Ns is the number of wires that depends on inputs from two or more parties. Significantly, only the distributed proof generation in D-Graphene requires interaction among the provers. D-Graphene compares favourably with the DPZK protocols obtained from the state-of-art zero-knowledge protocols, even those not modelled as IOPs.
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Acoff, V. L., R. D. Griffin, G. M. Janowski, B. Radhakrishnan, and R. G. Thompson. "A Transmission Electron Microscopy examination of the effect of post-weld heat treatment on spot welded Ti-14Al-21Nb." Proceedings, annual meeting, Electron Microscopy Society of America 49 (August 1991): 610–11. http://dx.doi.org/10.1017/s0424820100087367.

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Titanium aluminides have great potential in structural, aerospace, and high temperature engineering applications. In the majority of these uses, it is expected fusion welding will be used as the primary method of joining. However, control of the as-welded microstructure (and mechanical properties) is difficult to obtain since cooling rates and, therefore, the microstructures can vary considerably.Samples of 14.2 Al, 21.3 Nb, 0.018 C, 0.05 Fe, 0.012 N, 0.013 H, and 0.10 O (in wt.%), commonly known as Ti-24Al-11Nb (in at.%), were placed on a copper block and spot welded inside of a Iucite box using a gas tungsten arc welder (GTAW). The specimens were then sealed in argon backfilled fused quartz tubes and heat treated in the α2, + B2 field of the phase diagram. The conditions of this post-weld heat treatment (PWHT) were 982°C for 0.5, 1, 2, or 4 hours. Transmission electron microscopy and microhardness tests were used to characterize the alloy.
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Ran, De Long, Jian Jun Xie, Kai Huang, Shui Ping Yin, Sheng Ming Chen, and Ying She Luo. "High Temperature Resistance of Epoxy Adhesives under the Room-Temperature Curing." Advanced Materials Research 284-286 (July 2011): 1804–7. http://dx.doi.org/10.4028/www.scientific.net/amr.284-286.1804.

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High-temperature resistant epoxy adhesives cured under room-temperature becomes more and more important in many industries such as aerospace and aviation, the locomotive and diesel, etc. In this paper three self-made amine-based mannich-amide was mixed with E-44 epoxy resin under the same technological parameters, and the epoxy adhesives cured by the three amine-based mannich-amides under room-temperature are tested by FTIR, TGA and DMA. Results of TGA show a quicker drop in weight occurrence within 150-250°C for epoxy networks cured by multiamine-based mannich amides than the long-chain alkyl one. Results of FTIR show completely curing of epoxy adhesives cured by mannich amides under room temperature and the height of absorption band 1502cm-1(C-N) is much lower after 12h under 150°C,200°C atmosphere than 25°C. Results of DMA show that the Tg determined by DMA has an order EP AN2(89.9°C) >EP AN1(89.7°C)>EP AN3(80.8°C). In the rest results of DMA, the EP-AN3 system has the biggest storage modulus (E’) within 100-150°C while the EP-AN3 system has the smallest loss modulus(E”) within 100-150°C. As a whole, the epoxy adhesives cured by AN3 under room-temperature have the best high temperature resistance.
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Aksu, Inayet Ozge, and Ramazan Coban. "Corrigendum to: “Sliding m ode PI c ontrol with backstepping a pproach for MIMO n onlinear c ross‐ c oupled t ank s ystems”." International Journal of Robust and Nonlinear Control 29, no. 13 (July 15, 2019): 4627–28. http://dx.doi.org/10.1002/rnc.4684.

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Qian, Cheng, Xiaoliang Yin, and Qing Ouyang. "Modeling and Parameter Identification of the MR Damper Based on LS-SVM." International Journal of Aerospace Engineering 2021 (February 17, 2021): 1–9. http://dx.doi.org/10.1155/2021/6648749.

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In order to identify the nonlinear characteristics of the magnetorheological (MR) damper applied in multi-DOF vibration reduction platforms in the aerospace field in the modeling process, the least square support vector machine (LS-SVM) method is adopted, because LS-SVM can handle small-sample, high-dimensional characteristic problems. Firstly, the theory of the modeling method based on LS-SVM was illustrated including the genetic algorithm (GA) optimization method. Secondly, the characteristic curve of the MR damper was tested based on different conditions. Then, the current and historical input displacement, velocity, and current and the historical output are taken as the input of the LS-SVM model and the damping force of the current output is taken as the output of the model for model training. Meanwhile, the genetic algorithm is introduced to optimize the parameters of the LS-SVM model which affect the accuracy of the model, the penalty factor c = 16.48 , and the kernel parameter σ = 3.39 after optimization. Finally, in order to verify the method adopted in the paper, the Simulink model was simulated in certain input conditions; by comparing the simulation and experimental values of this model, it is found that the maximum error is within 10 N and the average error is around 0.89 N, which is similar to the accuracy obtained in other works of literature, and the correctness of this model is verified.
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Dakhane, Akash, and Narayanan Neithalath. "Reaction Kinetics and Characterization of Slag-Based, High Strength, “Just-Add-Water” Type (One-Part) Alkali-Activated Binders." Recent Progress in Materials 4, no. 2 (February 3, 2022): 1. http://dx.doi.org/10.21926/rpm.2202006.

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The influence of different levels of alkalinity, expressed using M2O-to-binder ratio (n) and activator SiO2-to-M2O ratio (Ms), (M being the Na+ or K+ cation) on the reaction kinetics, compressive strength development and the reaction product formation in slag-based systems activated using alkali powders are discussed. The fundamental idea is to better understand one-part, “just-add-water” type alkali activated binders that are easy-to-use than the systems that rely on liquid activators. The difference in the behavior of the systems with changes in the cationic species (Na+ or K+) and the overall levels of alkalinity is elucidated. Heat release and its rate, and thermal analysis and Fourier Transform Infrared Spectroscopy (FTIR) are used for the characterization of the reaction and the products formed. The influence of activator alkalinity on the initial dissolution and acceleration phases is examined using isothermal calorimetry. An increase in Ms is found to result in reduced early-age and slightly increased later-age compressive strengths. The activator cationic species influences later-age strengths, with K-silicate activated mortars showing a higher strength. The strength data is related to the C-(A)-S-H gel formation. The study shows that slag-based binders can be proportioned to obtained compressive strengths in excess of 80 MPa at later ages (56 days), and up to 30 MPa within 72 hours. The optimal alkali levels based on n and Ms for both the Na- and K-based activator systems are determined.
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Dissertations / Theses on the topic "Aerospace engineering, n.e.c"

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Bejarano, Roberto Villa. "An Investigation Into| I) Active Flow Control for Cold-Start Performance Enhancement of a Pump-Assisted, Capillary-Driven, Two-Phase Cooling Loop II) Surface Tension of n-Pentanol + Water, a Self-Rewetting Working Fluid, From 25 ?C to 85 ?C." Thesis, University of Nevada, Reno, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=1565813.

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Cold-start performance enhancement of a pump-assisted, capillary-driven, two-phase cooling loop was attained using proportional integral and fuzzy logic controls to manage the boiling condition inside the evaporator. The surface tension of aqueous solutions of n-Pentanol, a self-rewetting fluid, was also investigated for enhancing heat transfer performance of capillary driven (passive) thermal devices was also studied. A proportional-integral control algorithm was used to regulate the boiling condition (from pool boiling to thin-film boiling) and backpressure in the evaporator during cold-start and low heat input conditions. Active flow control improved the thermal resistance at low heat inputs by 50% compared to the baseline (constant flow rate) case, while realizing a total pumping power savings of 56%. Temperature overshoot at start-up was mitigated combining fuzzy-logic with a proportional-integral controller. A constant evaporator surface temperature of 60°C with a variation of ±8°C during start-up was attained with evaporator thermal resistances as low as 0.10 cm2–K/W. The surface tension of aqueous solutions of n-Pentanol, a self-rewetting working fluid, as a function of concentration and temperature were also investigated. Self-rewetting working fluids are promising in two-phase heat transfer applications because they have the ability to passively drive additional working fluid towards the heated surface; thereby increasing the dryout limitations of the thermal device. Very little data is available in literature regarding the surface tension of these fluids due to the complexity involved in fluid handling, heating, and experimentation. Careful experiments were performed to investigate the surface tension of n-Pentanol + water. The concentration and temperature range investigated were from 0.25%wt. to1.8%wt and 25°C to 85°C, respectively.

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Phillips, David. "Analysis and Parameter Estimation of the Aerodynamic and Handling Qualities of the C-130A Modified With Wing Tip Tanks." NCSU, 2004. http://www.lib.ncsu.edu/theses/available/etd-11302004-185835/.

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This work presents the background, flight testing, and resulting change in the aerodynamic and handling qualities of a C-130A Hercules modified with wing tip tanks. The data collected during the baseline and modified flight tests of this aircraft demonstrated the potential aerodynamic benefits of a tip tank design that incorporates a greater aspect ratio and end plating effects. Wing mounted pressure belts measured a 24% increase in local Cl near the tip tanks. This local increase in lift contributed to a 38% increase in CL max for the airplane. The pressure and dynamic data was gathered using a LIFT (Linux In Flight Testing) system, and it laid the foundation for finding the longitudinal and lateral directional stability coefficients of the airplane. Then using MATLAB® and the System IDentification Programs for AirCraft (SIDPAC) to reduce this data, it was possible to generate aerodynamic, lateral, and longitudinal parameters that clearly proved the overall benefits of the design change. The demonstrated lift benefits of these uniquely designed tip tanks for the C-130A cargo transport proved that by capitalizing on the benefits of a combination tip tank and end plate design it is possible to generate increased lift without adversely affecting the stability and dynamic parameters of the aircraft.
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He, Jiliang. "Silyhydrazines : chemistry and pyrolytic conversion to Si-N-C ceramic materials." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=29044.

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A new synthetic route to silylhydrazine molecules and polymers has been developed by the heterodehydrocoupling of organosilanes with hydrazines. A dimethyltitanocene catalyst has been employed to facilitate the dehydrocoupling reaction. The dehydrocoupling was shown to proceed by stepwise replacement of Si-H with hydrazino groups. The controlled hydrolysis of Ph$ sb2$Si(NHNHMe)$ sb2$ formed a hydrazinodisiloxane. Cyclizations of Ph$ sb2$Si(NHNHMe)$ sb2$ to form cyclic silylhydrazines were achieved by the reaction with n-BuLi/Ph$ sb2$SiCl$ sb2,$ or MeI (or HCl or Ph$ sb2$SiCl$ sb2),$ or thermolysis. Crystal structures of Ph$ sb2$Si(NHNR)(NRNH)SiPh$ sb2$ (R = H, Me) reveal chair (R = H) and twist-boat (R = Me) conformations of the Si$ sb2$N$ sb4$ ring, respectively. Planar and pyramidal nitrogen geometries were found to coexist in a hydrazino unit. A preceramic polymer, synthesized by the polymerization of MeHSiCl$ sb2$ with hydrazine in an appropriate ratio, was pyrolyzed to Si$ sb3$N$ sb4$/SiC$ rm sb{x}$N$ rm sb{y}$ in 67-80% ceramic yields. It is proposed that the structural unit of this polymer is a tetraazadisilacyclohexane bridged by MeHSi groups. This assignment is based on $ sp{1}$H and $ sp{29}$Si NMR measurements, as well as by comparison with the well-defined reaction product of Me$ sb2$Si(NHNH) $ sb2$SiMe$ sb2$ with MeHSiCl$ sb2.$ The pyrolysis was carried out from room temperature to 1500$ sp circ$C under argon and studied by using thermogravimetric analysis, solid-state $ sp{29}$Si NMR spectroscopy, infrared spectroscopy, x-ray powder diffraction, and elemental analysis. Serial structural changes were characterized in the pyrolyzed solid products. The ceramic product of this polymer at 1100$ sp circ$C was found to possess a quasi-metallic electrical conductivity ($ sigma$ = 10$ sp3$ ($ Omega$cm)$ sp{{-}1}),$ and was evaluated as an electrode material.
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McAvoy, Camille Z. "Palladium-catalyzed C-N cross-coupling reactions toward the synthesis of drug-like molecules." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/73388.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Chemistry; and, (S.B.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 2012.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. ).
The development of methodologies for C-N bond formation reactions is an important scientific challenge because of many academic and industrial applications. This work will focus particularly on palladium-catalyzed cross-couplings of amine-containing compounds with aryl halides. The scope of the BrettPhos precatalyst for the cross-coupling of ortho-substituted aryl iodides with amides is studied using substrates with a variety of functional groups. Due to potential metal-chelating issues with some of the substrates used in this study, a proposed ligand synthesis is discussed in which one of the methoxy groups of BrettPhos is replaced with a morpholine capable of occupying palladium's open coordination site during its catalytic cycle. A final C-N bond formation study focuses on the cross-coupling of aryl halides with amidine salts. For this cross-coupling, a methodology has been developed that can be applied to various electron-rich, electron-poor, and electron-neutral substrates. Furthermore, the products of this cross-coupling can be used for a subsequent electrocyclization through a reaction with aldehyde, demonstrating that a relatively simple two-pot methodology can be used to make relatively complex substrates with pharmaceutical applications. Both amides and amidines are common moieties in drug-like molecules because of the various biological activities of these functional groups. Potential medicinal applications of the developed cross-coupling of amidine salts with aryl halides methodology are described. Thus, methodologies for various palladium-catalyzed, C-N cross-couplings as well as a potential ligand synthesis to be used for palladium catalysis are herein discussed.
by Camille Z. McAvoy.
S.B.
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Camardo, Andrew T. "C-JUN N-TERMINAL KINASE INHIBITORY NANOTHERAPEUTICS FOR REGENERATIVE ELASTIC MATRIX REPAIR IN ABDOMINAL AORTIC ANEURYSMS." Cleveland State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=csu1499868307678719.

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Shi, Zhangsheng. "Strain engineering of Co-N-C catalyst toward enhancing the HER and ORR electrocatalytic activities." Thesis, Queensland University of Technology, 2020. https://eprints.qut.edu.au/207078/8/Zhangsheng_Shi_Thesis.pdf.

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This thesis presents a comprehensive review of practical strategies to enhance the catalytic activity of M-N-C materials. The practical strategies can be extended to engineer external factors to break the linear scaling relationships and to further enhance the catalytic performances. In order to design the next-generation higher-performance catalysts, this project was a step forward in developing strain and heterostructure method to achieve a superior HER performance and a ORR performance beyond the limit.
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Dong, Jin Xiang 1961. "Effect of silicon on the kinetics of Nb(C,N) precipitation during the hot working of steels." Thesis, McGill University, 2000. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=31048.

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The effect of Si on the kinetics of Nb(C,N) precipitation was investigated by using fractional softening measurements. Compression specimens, with diameters of 7.6 mm and lengths of 11.4 mm, were prepared from four Nb microalloyed steels containing a range of Si concentrations from 0.01 wt% to 0.41 wt%. The stress relaxation method was used in the beginning of this work, but the majority of the experimental results were derived from double-hit compression tests, with a strain of 0.3 applied to represent each pass at a strain rate of 0.1/sec. A solution heat treatment was applied immediately prior to each test.
It was found that the rate of Nb(C,N) precipitation in hot deformed austenite increases with Si concentration. This phenomenon is attributed to the increases in both the Nb diffusivity and the activities of C and N that result from Si addition. Based on the Dutta and Sellars model, an expression for the effect of strain rate on the precipitation start time has been proposed. The present experimental results can then be extrapolated to mill conditions.
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Saluru, Deepak Chaitanya. "Active Fault Tolerant Model Predictive Control of a Turbofan Engine using C-MAPSS40k." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1338333795.

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Robertson, Cole D. "A Computational and Design Characterization for the Flowfield behind a C-130 during an Unmanned Aerial Vehicle Docking." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1563533448658585.

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Möslinger, Anja. "Particle Trajectory Simulations for SCIENA-N : Conversion surface design for an ENA sensor head." Thesis, Luleå tekniska universitet, Rymdteknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-83034.

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This thesis serves as a preliminary design study for the combination of a flight-proven ion optics system (SWIM) with a conversion surface to create a small energetic neutral atom (ENA) sensor. It is planned to use this sensor as ENA sensor for the DFP-SCIENA instrument on Comet Interceptor. Due to the nature of the Comet Interceptor mission (ESA F-class mission with a maximum launch mass of 1000 kg) the development time for a new sensor that meets the size and weight restrictions is limited. The proposed combination of SWIM with a conversion surface is based on a proven ion optics design and should result in a compact sensor design. The main goal of this thesis was to simulate different conversion surface designs and evaluate their compatibility with the SWIM instrument. During this process the different designs were optimised based on the intermediate simulation results. The simulation process was performed by using SIMION to calculate particle trajectories.  In the end, two different conversion surface designs yielded promising results. With both designs detailed simulations and data analysis were conducted to determine the different properties of the two designs. One of these designs was chosen to be further investigated for use on the Comet Interceptor mission.
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Books on the topic "Aerospace engineering, n.e.c"

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Shen, Rongjun. Proceedings of the 26th Conference of Spacecraft TT&C Technology in China: Shared and Flexible TT&C (Tracking, Telemetry and Command) Systems. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013.

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Fei xing qi ce kong tong xin gong cheng: Spacecraft TT&C and communication engineering. Beijing Shi: Guo fang gong ye chu ban she, 2010.

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Shen kong ce kong tong xin xi tong gong cheng yu ji shu: Engineering and Technology of Deep Space TT&C System. Beijing Shi: Ke xue chu ban she, 2013.

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Aerospace, Mechanisms Symposium (31st 1997 Huntsville Ala ). 31st Aerospace Mechanisms Symposium: Proceedings of a symposium held at the Huntsville Marriott, Huntsville, Alabama and hosted by NASA, George C. Marshall Space Flight Center and sponsored by Lockheed Martin Missiles and Space and the Aerospace Mechanisms Symposium Committee, May 14-16, 1997. MSFC, Ala: National Aeronautics and Space Administration, Marshall Space Flight Center, 1997.

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Estwanik, Joseph J. Sportsmedicine for the combat arts. Charlotte, NC: Boxergenics Press, 1996.

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Surface Engineering of C/N/O Functionalized Materials. MDPI, 2021. http://dx.doi.org/10.3390/books978-3-0365-2704-8.

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Qian, Weiping, and Rongjun Shen. Proceedings of the 26th Conference of Spacecraft TT&C Technology in China: Shared and Flexible TT&C Systems. Springer, 2014.

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IEEE Aerospace & Electronics Systems Soc. 1995 IEEE National Aerospace and Electronics Conference ( N A E C O N '9 5) (Ieee National Aerospace and Electronics Conference//Proceedings). Institute of Electrical & Electronics Enginee, 1995.

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Etter, D. M. Engineering Problem Solving With A N S I C. Institute of Electrical & Electronics Enginee, 1995.

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Qian, Weiping, and Rongjun Shen. Proceedings of the 27th Conference of Spacecraft TT&C Technology in China: Wider Space for TT&C. Springer Berlin / Heidelberg, 2014.

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Book chapters on the topic "Aerospace engineering, n.e.c"

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Lai, Zhong Hong, Jae Ho Jeon, Jing Chuan Zhu, and Zhong Da Yin. "Mo-Si-C-N Multi-Layer Anti-Oxidation Coating on C/C Composites." In Key Engineering Materials, 1899–902. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-456-1.1899.

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Carlson, Dean A., and George Leitmann. "Fields of Extremals and Sufficient Conditions for the Simplest Problem of the Calculus of Variations in n-Variables." In Variational Analysis and Aerospace Engineering, 75–89. New York, NY: Springer New York, 2009. http://dx.doi.org/10.1007/978-0-387-95857-6_5.

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Jang, Chul Sik, Young Rae Cho, Myung Chang Kang, Won Sub Chung, and Kwang Ho Kim. "Microstructure and Mechanical Properties of Cr-C-N, Cr-Si-N and Cr-Si-C-N Coatings by a Hybrid Coating System." In Key Engineering Materials, 2224–27. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-410-3.2224.

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Park, In Wook, Brajendra Mishra, Kwang Ho Kim, and John J. Moore. "Multifunctional Ti-Si-B-C-N Tribological Nanocomposite Coatings for Aerospace Applications." In THERMEC 2006, 173–80. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-428-6.173.

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Wang, Jinbao, Wenge Yang, and Dong Liu. "Application of Multicarrier 2-Dimension Spread Spectrum in Aerospace TT&C." In Lecture Notes in Electrical Engineering, 119–30. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-33663-8_13.

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Guan, Fei. "A solution of information integration and service sharing in aerospace TT&C systems." In Machinery, Materials Science and Engineering Applications, 385–90. CRC Press/Balkema P.O. Box 11320, 2301 EH Leiden, The Netherlands: CRC Press/Balkema, 2016. http://dx.doi.org/10.1201/9781315375120-57.

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Liu, Wen Jun, Yong Zheng, and Wei Hao Xiong. "Microstructures and Mechanical Properties of Nano-Composite Ti(C,N)-Based Cermets." In Key Engineering Materials, 1214–17. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-410-3.1214.

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Yang, Zhi Hua, Yu Zhou, De Chang Jia, Chang Qing Yu, Qing Chang Meng, and Jia Hu Ouyang. "Preparation of Amorphous Si-B-C-N Powders and Nano-Sized Ceramics." In Key Engineering Materials, 1218–20. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-410-3.1218.

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Flinders, R. Marc, Darin Ray, Angela Anderson, and Raymond A. Cutler. "Microstructural Engineering of the Si-C-Al-O-N System." In Ceramic Transactions Series, 63–78. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118408100.ch6.

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Zhou, Wei, Zhulong Sun, Yaqi Ren, and Feijuan Yao. "The Application of Kinematic Relative Positioning Technology with BDS in Aerospace TT&C Equipment Precision Verification." In Lecture Notes in Electrical Engineering, 197–209. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-0934-1_19.

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Conference papers on the topic "Aerospace engineering, n.e.c"

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Uddin, M. F., P. Krishnaswamy, C. Basavaraju, and K. A. Manoly. "Perspectives on Safety Margin Associated With Internal Repair of Buried Class 2 and 3 Safety Related Piping Using Carbon Fiber Reinforced Polymer Composites." In ASME 2018 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/pvp2018-84972.

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Carbon fiber reinforced polymer (CFRP) composites have been used for decades in various industries such as aerospace, oil and gas, and transportation mainly due to their high strength-to-weight-ratio and excellent corrosion resistance. However, the use of CFRP in nuclear industry applications has been very limited. Recently, a new ASME Boiler and Pressure Vessel (BPV) Code Case N-871 has been proposed for internal repair of buried Class 2 and 3 nuclear safety related piping using CFRP for Service Levels A, B, C and D at temperatures not exceeding 200F. This is a first-of-a-kind CFRP application for nuclear safety related piping. It is known that CFRP materials are subject to property degradation due to environmental exposure as well as creep behavior under sustained loading. These factors should be considered when designing the CFRP repair for any nuclear safety related piping application to ensure an adequate safety margin is maintained. In the proposed Code Case, there are provisions for using two different design (analysis method) methods — Allowable Stress Design (ASD) and Load and Resistance Factor Design (LRFD) methods. The LRFD method has been widely used in civil engineering applications but has never been used in ASME Section III Code for nuclear piping applications. This paper presents a comparison of these two methods from a safety margin point of view. As CFRP is a new material for ASME BPV Code for nuclear safety related applications, several areas have been identified in the design concepts to ensure an adequate safety margin for Service Levels A, B, C and D. An effort is also made to provide guidelines on the required safety margin for CFRP repair of safety related piping. Finally, Code Case N-871 is reviewed to evaluate the minimum safety margin available for both ASD and LRFD methods.
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Harker, Alan B., Robert J. Ondercin, and Karen R. Olson. "Properties of thin film Si-C-N compositions." In Aerospace/Defense Sensing, Simulation, and Controls, edited by Randal W. Tustison. SPIE, 2001. http://dx.doi.org/10.1117/12.439186.

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Eaton, Frank D., William H. Hatch, John R. Hines, Jeffrey O. Johnson, Wayne Flowers, Glenn Hoidale, and Elaine Santantonio. "Intercomparison of C2n data derived from VHF and UHF radars." In Aerospace Sensing, edited by Anton Kohnle and Walter B. Miller. SPIE, 1992. http://dx.doi.org/10.1117/12.137892.

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Rejack, Michael D., Byron M. Welsh, and Steven K. Rogers. "Sensing refractive-turbulence profiles (C-squared(n)) using wave front slope measurements from two reference sources." In Aerospace Sensing, edited by Anton Kohnle and Walter B. Miller. SPIE, 1992. http://dx.doi.org/10.1117/12.137891.

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Ericson, M. N., M. Hasanuzzaman, S. C. Terry, C. L. Britton, B. Ohme, S. S. Frank, J. A. Richmond, and B. J. Blalock. "1/f Noise and DC Characterization of Partially Depleted SOI N-and P-MOSFETs from 20 º C-250 º C." In 2005 IEEE Aerospace Conference. IEEE, 2005. http://dx.doi.org/10.1109/aero.2005.1559566.

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MIRTH, J. "Shuttle-C user requirements and applications." In Aerospace Engineering Conference and Show. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1990. http://dx.doi.org/10.2514/6.1990-1812.

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Rait, Gary L. "SIR-C L-band/C-band dual-polarization synthetic aperture radar antennas." In Optical Engineering and Photonics in Aerospace Sensing, edited by James C. Shiue. SPIE, 1993. http://dx.doi.org/10.1117/12.152581.

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Phuvan, Sonlinh. "N-wavelet coding for pattern classification." In Optical Engineering and Photonics in Aerospace Sensing, edited by Friedrich O. Huck and Richard D. Juday. SPIE, 1993. http://dx.doi.org/10.1117/12.150977.

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Bian, Dejun, Haiyan Guo, and Wenhua Zhang. "Simultaneous C and N Removal in a Hybrid CAST Reactor." In 2009 3rd International Conference on Bioinformatics and Biomedical Engineering (iCBBE). IEEE, 2009. http://dx.doi.org/10.1109/icbbe.2009.5163401.

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Li, Qingwei, Bingnan Lv, and Hong Wang. "Influence of C/N Ratio on Nitrogen Changing during Composting." In 2010 4th International Conference on Bioinformatics and Biomedical Engineering (iCBBE). IEEE, 2010. http://dx.doi.org/10.1109/icbbe.2010.5518111.

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Reports on the topic "Aerospace engineering, n.e.c"

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Bonfil, David J., Daniel S. Long, and Yafit Cohen. Remote Sensing of Crop Physiological Parameters for Improved Nitrogen Management in Semi-Arid Wheat Production Systems. United States Department of Agriculture, January 2008. http://dx.doi.org/10.32747/2008.7696531.bard.

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To reduce financial risk and N losses to the environment, fertilization methods are needed that improve NUE and increase the quality of wheat. In the literature, ample attention is given to grid-based and zone-based soil testing to determine the soil N available early in the growing season. Plus, information is available on in-season N topdressing applications as a means of improving GPC. However, the vast majority of research has focused on wheat that is grown under N limiting conditions in sub-humid regions and irrigated fields. Less attention has been given to wheat in dryland that is water limited. The objectives of this study were to: (1) determine accuracy in determining GPC of HRSW in Israel and SWWW in Oregon using on-combine optical sensors under field conditions; (2) develop a quantitative relationship between image spectral reflectance and effective crop physiological parameters; (3) develop an operational precision N management procedure that combines variable-rate N recommendations at planting as derived from maps of grain yield, GPC, and test weight; and at mid-season as derived from quantitative relationships, remote sensing, and the DSS; and (4) address the economic and technology-transfer aspects of producers’ needs. Results from the research suggest that optical sensing and the DSS can be used for estimating the N status of dryland wheat and deciding whether additional N is needed to improve GPC. Significant findings include: 1. In-line NIR reflectance spectroscopy can be used to rapidly and accurately (SEP <5.0 mg g⁻¹) measure GPC of a grain stream conveyed by an auger. 2. On-combine NIR spectroscopy can be used to accurately estimate (R² < 0.88) grain test weight across fields. 3. Precision N management based on N removal increases GPC, grain yield, and profitability in rainfed wheat. 4. Hyperspectral SI and partial least squares (PLS) models have excellent potential for estimation of biomass, and water and N contents of wheat. 5. A novel heading index can be used to monitor spike emergence of wheat with classification accuracy between 53 and 83%. 6. Index MCARI/MTVI2 promises to improve remote sensing of wheat N status where water- not soil N fertility, is the main driver of plant growth. Important features include: (a) computable from commercial aerospace imagery that include the red edge waveband, (b) sensitive to Chl and resistant to variation in crop biomass, and (c) accommodates variation in soil reflectance. Findings #1 and #2 above enable growers to further implement an efficient, low cost PNM approach using commercially available on-combine optical sensors. Finding #3 suggests that profit opportunities may exist from PNM based on information from on-combine sensing and aerospace remote sensing. Finding #4, with its emphasis on data retrieval and accuracy, enhances the potential usefulness of a DSS as a tool for field crop management. Finding #5 enables land managers to use a DSS to ascertain at mid-season whether a wheat crop should be harvested for grain or forage. Finding #6a expands potential commercial opportunities of MS imagery and thus has special importance to a majority of aerospace imaging firms specializing in the acquisition and utilization of these data. Finding #6b on index MCARI/MVTI2 has great potential to expand use of ground-based sensing and in-season N management to millions of hectares of land in semiarid environments where water- not N, is the main determinant of grain yield. Finding #6c demonstrates that MCARI/MTVI2 may alleviate the requirement of multiple N-rich reference strips to account for soil differences within farm fields. This simplicity will be less demanding of grower resources, promising substantially greater acceptance of sensing technologies for in-season N management.
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