Results 71 to 80 of about 416,763 (296)

STB-White [PDF]

The final design of a hypersonic, SCRAMjet research aircraft, which is to be dropped from a carrier plane, is considered. Topics such as propulsion systems, aerodynamics, component weight analysis, and aircraft design with waverider analyses are stressed
Ammon, Rob, Gallagher, Todd, Gouhin, Pat, Hermann, Steve, Molnar, Dan, Roos, John Bryan, Saurer, Craig, White, Heather   +7 more
core   +1 more source

Hierarchical Strain‐Modified Medium‐Entropy Carbide Ceramics Exhibit Exceptional Ablation Resistance up to 2400°C

Advanced Science, EarlyView.
A novel strategy is developed by doping reduced graphene oxide (rGO) into a (HfZrTi)C medium‐entropy ceramic. This induces a hierarchical strain modification mechanism, synergistically inhibiting crack propagation at the microscale and dissipating stress at the mesoscale.
Junyi Xiao, Pengfei He, Lin Xue, Shujun Hu, Liliang Shao, Chuan Sun, Yunyun Ge, Jiangbo Cheng, Xiubing Liang   +8 more
wiley   +1 more source

Application of nonlinear feedback control theory to supermaneuverable aircraft [PDF]

Controlled flight at extremely high angles of attack, far exceeding the stall angle, and/or at high angular rates is sometimes referred to as supermaneuvering flight. The objective was to examine methods for design of control laws for aircraft performing
Enns, Dale F., Garrard, William L.
core   +1 more source

Supersonic aircraft Patent [PDF]

, 1967
Design of supersonic aircraft with novel fixed, swept wing ...
Carlson, H. W., Harris, R. V., Jr., Mclean, F. E., Middleton, W. D., Robins, A. W.   +4 more
core   +1 more source

Programmable Multifunctional Bistable Structures for Energy Transfer and Dissipation

Advanced Science, EarlyView.
Utilizing the energy conversion characteristics of asymmetric bistable beams, this study develops a programmable multifunctional system composed of multiple bistable beams for energy transfer and dissipation. The high energy density enables the system to demonstrate potential in transient scenarios such as target delivery and shock absorption ...
Xin Na, Jincong Zhang, Zhicheng Chen, Venkatarao Selamneni, Haotian Chen, Hadi Heidari, Morteza Amjadi   +6 more
wiley   +1 more source

Comparison of Actual Hybrid-Electric Flights with a Digital Twin in a Preliminary Aircraft Design Environment

Aerospace
To tackle climate change, aircraft designers envision new aircraft concepts which promise to reduce greenhouse gas emissions and enable greener flights. One option is hybrid-electric propulsion architectures.
Dominik Eisenhut, Andreas Bender, Niclas Grüning, Jonas Mangold, Andreas Strohmayer   +4 more
doaj   +1 more source

V/STOL aircraft and fluid dynamics [PDF]

The impact of military applications on rotorcraft and V/STOL aircraft design is summarized with respect to fixed-wing aircraft. The influence of the mission needs on the configurational design of V/STOL aircraft, the implications regarding some problems ...
Anderson, S. B., Roberts, L.
core   +1 more source

Piezo‐Phototronic PVDF/HfO2/Nano‐Cu Heterostructured Thin Film for Flexible Self‐Powered Multimodal Sensing

Advanced Science, EarlyView.
Electrospinning a composite of PVDF, HfO2, and nano‐Cu transforms the discrete precursors into a continuous nanofiber mesh, forming a multi‐interface heterostructure with embedded nanoparticles. The presence of HfO2 and nano‐Cu at the fiber interfaces induces a highly aligned β‐phase, which enhances piezoelectric crystallinity and improves the material'
Jiawei Gu, Qiongle Peng, Xuanqi Zhong, Yi Zheng, Zhiqiang Ma, Xiaoxian Song, Ruihuan Zhang, Bao Liu, Yanhu Zhang, Zhengbao Yang   +9 more
wiley   +1 more source

Reversible Stress‐memory Phosphorescent Carbon Nanodots via Supramolecular Confinement Engineering for Aerospace Monitoring

Advanced Science, EarlyView.
A kind of new CNDs‐based materials with reversible mechano‐responsive phosphorescence emission through incorporating CNDs into the supramolecular rigid network is leveraged for aerospace applications, where the CND‐embedded film demonstrated memorable visualization of stress distribution in wings under sudden mechanical events (e.g., micro‐impacts ...
Yachuan Liang, Haochun Shao, Kaikai Liu, Qing Cao, Liying Jiang, Chongxin Shan, Leman Kuang, Hui Jing   +7 more
wiley   +1 more source

Wind tunnel test research for influence of passive flow control technology on low speed characteristics of civil transport aircraft

Hangkong gongcheng jinzhan
In order to optimize the low-speed characteristics of the high-lift configuration of civil transport aircraft and enhance the take-off and landing performance of the aircraft，it is necessary to control the flow separation of the wings.
YAN Wei, WANG Qimin, LI Jinye, XU Huiwen, ZHAO Keliang, BAI Feng, ZHANG Meihong, JIAO Renshan, WANG Fei, ZENG Weiping   +9 more
doaj   +1 more source