Results 61 to 70 of about 416,562 (354)
Applied Sciences, 2021 This work presents a novel design model of a magnetorheological (MR) fluid-based shock absorber (MR shock absorber in short) that can be applied to an aircraft landing gear system. When an external force acts on an MR shock absorber, pressure loss occurs
Byung-Hyuk Kang +2 more
semanticscholar +1 more source
Advanced Robotics Research, EarlyView.Pak Biawak, a necrobot, embodies an unusual fusion of biology and robotics. Designed to repurpose natural structures after death, it challenges conventional boundaries between nature and engineering. Its movements are precise yet unsettling, raising questions about sustainability, ethics, and the untapped potential of biointegrated machines.
Leo Foulds +2 more
wiley +1 more source
Advanced Science, EarlyView.Plants are promising materials for building sustainable and eco‐friendly robots due to their inherent multifunctionality, with actuation playing a crucial role. This article focuses on the physical movements of plants and, from the perspective of actuation characteristics, explores representative plant species and their behaviors, the current state of ...
Kazuya Murakami +8 more
wiley +1 more source
Analysis of adaptive landing performance of bionic four-legged hexacopter UAV
Hangkong gongcheng jinzhanThe classic sled-type landing gear is difficult to take off and land in challenging terrain，with the widespread usage of rotor unmanned aerial vehicle（UAV）in both civil and military domains.
WEI Xiaohui
doaj +1 more source
Double-acting shock absorber Patent [PDF]
, 1966 Shock absorber for landing gear of lunar or planetary landing ...
Blumrich, J. F.
core +1 more source
Advanced Science, EarlyView.A CoCrFeNiTa0.4 eutectic high‐entropy alloy achieves a near‐theoretical yield strength of 2.6 GPa with 13.6% plasticity. This breakthrough stems from a hierarchical nanostructure (FCC‐Laves lamellae with L12/D022 precipitates), which alleviates the inter‐phase modulus/hardness mismatch through synergistic strengthening and toughening, guiding the ...
Yusha Luo +10 more
wiley +1 more source
Design of an Adaptive Landing Gear with Ground Contact Sensing Capability
Nanjing Hangkong Hangtian Daxue XuebaoTo improve the landing capability of helicopters on complex terrain， this paper proposes an adaptive landing gear with ground contact sensing capability.
LI Qi, MIAO Hongtao, YANG Yun
doaj +1 more source
Did the Indian Green Revolution Change the Farm Size–Productivity Relationship?
Applied Economic Perspectives and Policy, EarlyView.ABSTRACT We examine the relationship between farm size and productivity during India's Green Revolution, a period of rapid technological transformation. Using a unique panel of over 5000 Indian farm households that spans the Green Revolution (1971–1999), we show that the classic (linear) inverse farm size–productivity relationship gradually evolved ...
Rabail Chandio, Leah E. M. Bevis
wiley +1 more source
Drive Systems for Landing Gears Numerically Simulated in AMESim Software
Modelling and Simulation in Engineering, 2023 This work presents two versions of landing gear drives numerically simulated. We follow to obtain the right driving sequence of the legs and doors and the estimation of the landing gear deploy and retract time.
L. Dinca, J. I. Corcau, C. V. Vaden
doaj +1 more source
Optimisation of Shimmy Suppression Device in An Aircraft Main Landing Gear [PDF]
, 2016 In earlier publications of landing gear shimmy analysis, efforts have concentrated on predicting the onset of shimmy instability and investigating how to stabilise shimmy-prone landing gears.
Jiang, Jason Zheng +2 more
core +1 more source