Results 31 to 40 of about 2,944,878 (288)

Experimental assessment of low noise landing gear component design [PDF]

open access: yes, 2009
Landing gear related airframe noise is one of the dominant aircraft noise components atapproach, so continued research efforts to reduce landing gear noise are essential.
Chow, Leung Choi   +13 more
core   +1 more source

SIMULATION EXPERIMENT ON LANDING SITE SELECTION USING A SIMPLE GEOMETRIC APPROACH [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017
Safe landing is an important part of the planetary exploration mission. Even fine scale terrain hazards (such as rocks, small craters, steep slopes, which would not be accurately detected from orbital reconnaissance) could also pose a serious risk on ...
W. Zhao   +9 more
doaj   +1 more source

Bifurcation Analysis of a Coupled Nose Landing Gear-Fuselage System [PDF]

open access: yes, 2014
Under certain conditions during takeoff and landing, pilots may sometimes experience vibrations in the cockpit. Because the cockpit is located right above the nose landing gear, which is known to potentially be prone to self-excited vibrations at certain
Lowenberg, Mark H   +3 more
core   +1 more source

Bifurcation analysis of nose landing gear shimmy with lateral and longitudinal bending [PDF]

open access: yes, 2009
We develop and study a model of an aircraft nose landing gear with torsional, lateral and longitudinal degrees of freedom. The corresponding three modes are coupled in a nonlinear fashion via the geometry of the landing gear in the presence of a nonzero ...
Thota, P   +5 more
core   +1 more source

Plasma Sheath around Chandrayaan-3 Landing Site: A Case Study

open access: yesThe Planetary Science Journal, 2023
India’s lander-rover mission Chandrayaan-3 is scheduled to be launched in mid-2023. We have simulated a realistic scenario and investigated the electric potential development over the Chandrayaan-3 landing site under the influence of observed solar ...
Trinesh Sana, S. K. Mishra
doaj   +1 more source

Thermal Modeling of the Lunar Regolith at the Chang'E‐4 Landing Site

open access: yesGeophysical Research Letters, 2021
Accurate assessments of surface temperatures on the Moon are important for understanding the physical properties of the lunar surface regolith and thermal effects on the reflectance spectra beyond 2 μm.
Honglei Lin   +11 more
doaj   +1 more source

Major Elements Concentrations in Chang’E-3 Landing Site from Active Particle-Induced X-ray Spectrometer

open access: yesRemote Sensing, 2023
On 14 December 2013 (UTC), China’s Chang’E-3 (CE-3) succeeded in landing on the Moon’s surface. The CE-3 landing site is in northern Mare Imbrium and several tens of meters away from the rim of a young crater with a few hundred meters in diameter.
Man-Hei Ng   +3 more
doaj   +1 more source

UAV Positioning Mechanisms in Landing Stations: Classification and Engineering Design Review

open access: yesSensors, 2020
Landing platforms’ automation is aimed at servicing vertical take-off and landing UAVs between flights and maintaining their airworthiness. Over the last few years, different designs for the landing platforms have been proposed.
Musa Galimov   +2 more
doaj   +1 more source

SUITABLE LANDING SITE SELECTION FOR UNMANNED AERIAL VEHICLES USING AIRBORNE LASER SCANNING POINT CLOUD [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
In the context of autonomous landing for unmanned aerial vehicles (UAVs), selecting a suitable landing site is crucial. This research presents a new method for automatically identifying safe landing sites based on point cloud data acquired through an ...
D. P. Singh, M. Yadav
doaj   +1 more source

Observation-based temperature field simulation at Zhurong landing site, Mars

open access: yesFrontiers in Astronomy and Space Sciences, 2022
Modeling the temperature field near the Martian surface is critical for many scientific exploration tasks, such as detecting liquid water and analyzing the existence of saline ice.
Lei Zhang   +7 more
doaj   +1 more source

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