Results 81 to 90 of about 417,773 (296)

Development Overview of Flight Loads

Hangkong gongcheng jinzhan, 2020
Flight load design is an important part of aircraft design. It is a bridge connecting the general aerodynamic design and structure stress design. In this paper, the development of flight load design is reviewed including the specifications to be followed
YAN Zhongwu, ZONG Ning, REN Wenguang, LI Zhi   +3 more
doaj   +1 more source

Aircraft Winglet Design

, 2020
Aerodynamic drag can be decreased with respect to a wing’s geometry, and wingtip devices, so called winglets, play a vital role in wing design. The focus has been laid on studying the lift and drag forces generated by merging various winglet designs with a constrained aircraft wing.
GongZhang, Hanlin, Axtelius, Eric
openaire   +2 more sources

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

A Laminating Strategy to Manyfold Enhance the Elastic Stretchability of Stretchable Electronics

Advanced Science, EarlyView.
We propose a laminating strategy that laminates a thick‐polymer layer onto the thin‐ribbon metallic structure. Using serpentine structures on soft and hard substrates as representative cases, this approach increases elastic stretchability by 3.5‐fold and 2.3‐fold.
Zanxin Zhou, Xiaolei Wu, Xinkai Xu, Fanming Wang, Shuang Li, Huiling Li, Yewang Su   +6 more
wiley   +1 more source

Outstanding 1200 °C Oxidation Resistance in a Novel Multi‐Principal Element Alloy via Lattice Distortion‐Induced Diffusion Suppression

Advanced Science, EarlyView.
The unique lamellar structure of the eutectic alloy promotes selective oxidation of Al initially, while lattice distortion‐induced diffusion suppression slows oxide growth during steady state. Combining these strategies, a Multi‐Principal Element Alloy with excellent oxidation resistance at 1200℃ was designed.
Xinyu Zhang, Weiyan Lv, Xinguang Wang, Chuanmin Jia, Yizhou Zhou, Keqiang Qiu, Jianqiang Wang   +6 more
wiley   +1 more source

In‐Wheel Piezoelectric DC Power Generator With Zero Resistive Torque

Advanced Science, EarlyView.
In this paper, we present a wheel‐shaped direct‐current piezoelectric generator (DC‐PG) that fundamentally overcomes these constraints by producing phase‐stable DC electricity directly from rolling motion. By embedding this system into suitcase wheels, we demonstrated a fully integrated real‐time location tracking system powered solely by mechanical ...
Hyun Soo Kim, Hyunseok Song, In Woo Oh, Dong‐Gyu Lee, Tae Kyoung Yoon, Jeyeon Lee, Byoung Jin Yoon, So‐Min Song, Iman M. Imani, Seohyun Cho, Seong Jin Kim, Chong‐Yun Kang, Sahn Nahm, Yong Seok Park, Kyung‐Hoon Cho, Jungho Ryu, Jeong Min Baik, Jun Chen, Sunghoon Hur, Hyun‐Cheol Song   +19 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

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

A Janus‐Like Bio‐Inspired Strategy for 3D‐Printed Bimetallic Metamaterials with Excellent Thermal‐Protection and Load Bearing Capacity

Advanced Science, EarlyView.
A Janus‐like bio‐inspired strategy is proposed for integrally 3D‐printed bimetallic metamaterials. Inspired by shell bilayers, a heat‐resistant AlSiFeMnNiMg alloy and a SiC‐reinforced AlSi10Mg with different SiC volume fractions are arranged as an architected pair.
Zhicheng Dong, Wei Cheng, Yu He, Ben Jia, Xiaopeng Wan, Heyuan Huang   +5 more
wiley   +1 more source

Aerodynamic and wind energy harvesting integrative design for UAVs

Kongqi donglixue xuebao
Dynamic soaring, a special flight mode that enables unpowered long-distance flight by utilizing horizontal wind gradients, holds great potential for enhancing the range and endurance of unmanned aerial vehicles (UAVs).
Wei Wang, Weigang An, Bifeng Song, Wenqing Yang, Yang Luo   +4 more
doaj   +1 more source