Results 61 to 70 of about 11,349 (300)

Analysis of spin-up and spring back loads of landing gear based on slip rate

open access: yesHangkong gongcheng jinzhan
The landing gear spin-up and spring back loads are the important part of the aircraft landing load. In order to effectively analyze the spin-up and spring back loads of the landing gear in the preliminary design stage,the two-wheel strut landing gear ...
WU Ming   +3 more
doaj   +1 more source

Research on Ground Tie-down Characteristics of Typical-layout Civil Aircraft

open access: yesHangkong gongcheng jinzhan, 2022
The aircraft is impacted by severe weather on parking apron,and the aerodynamic research of parking is important for parking safety.In order to analyze the aerodynamic difference of typical-layout civil aircraft induced by ground cross-wind,and determine
BAI Feng, WANG Qizhi
doaj   +1 more source

Analysis of medium-speed runway exit manoeuvres [PDF]

open access: yes, 2010
Recent studies suggest that fuel savings can be realised if more efficient surface movements can be achieved through means other than the engines of an aircraft, or by optimising the scheduling of aircraft on the ground. All aspects of ground manoeuvring
Coetzee, EB, Lowenberg, MH, Krauskopf, B
core  

Soft Robotic Snake with Tunable Undulatory Gait for Efficient Underwater Locomotion

open access: yesAdvanced Robotics Research, EarlyView.
This study designs an underwater soft snake robot using 3D‐printed soft actuators, controlled by specific signals to generate sinusoidal undulation. Results show a positive correlation between speed and swing amplitude, with optimal performance at 2/3π phase offset, PLA tail, 1.2 voltage growth rate, and 6s undulation period achieving a maximum speed ...
Huichen Ma, Junjie Zhou, Raye Yeow
wiley   +1 more source

Strength Analysis of a PTO (Power Take-Off) Gear-Train of a Multi-Purpose Cultivator during a Rotary Ditching Operation

open access: yesEnergies, 2019
Optimal design of transmission gears is important to ensure product durability and reliability. This study measured a multi-purpose cultivator during a rotary ditching operation and analyzed the strength of the power take off (PTO) gear-train for the ...
Yeon-Soo Kim   +6 more
doaj   +1 more source

Lateral response of nose-wheel landing gear system to ground-induced excitation [PDF]

open access: yes, 2007
Nose-wheel landing gears can become laterally unstable during takeoff, taxiing, and landing, exhibiting divergent. coupled lateral flexural and torsional oscillations called shimmy.
SURYANARAYAN, S, SURA, NK
core   +1 more source

Multimodal Locomotion in Insect‐Inspired Microrobots: A Review of Strategies for Aerial, Surface, Aquatic, and Interfacial Motion

open access: yesAdvanced Robotics Research, EarlyView.
This review identifies key design considerations for insect‐inspired microrobots capable of multimodal locomotion. To draw inspiration, biological and robotic strategies for moving in air, on water surfaces, and underwater are examined, along with approaches for crossing the air–water interface.
Mija Jovchevska   +2 more
wiley   +1 more source

Investigation of the engine-gear vortex with LIDAR and CFD [PDF]

open access: yes, 2018
The final approach and touchdown of a landing aircraft is studied numerically with a hybrid RANS/LES ap- proach, as well as a pulsed coherent LIDAR system.
Wildmann, Norman   +7 more
core   +1 more source

Gait Analysis of Pak Biawak: A Necrobot Lizard Built using the Skeleton of an Asian Water Monitor (Varanus Salvator)

open access: yesAdvanced 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

基于Pro/E的越野车托森差速器参数化设计

open access: yesJixie chuandong, 2012
The Torsen differential increase torque ratio and automatically adjust torque distribution according to the change of rotation speed difference by direct and inverse two pairs of worm gear and the worm driving with the characteristics of high friction ...
王欢, 孙传琼, 刘雍德, 李善杰
doaj  

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