Results 81 to 90 of about 34,020 (251)

Independent Orbiter Assessment (IOA): Analysis of the landing/deceleration subsystem [PDF]

The results of the Independent Orbiter Assessment (IOA) of the Failure Modes and Effects Analysis (FMEA) and Critical Items List (CIL) are presented. The IOA approach features a top-down analysis of the hardware to determine failure modes, criticality ...
Beaird, H. G., Compton, J. M., Weissinger, W. D.   +2 more
core   +1 more source

On the Brink: Mapping the Last Strongholds of the Critically Endangered Flapper Skate (Dipturus intermedius)

Ecology and Evolution, Volume 15, Issue 7, July 2025.
This study presents a high‐resolution spatial distribution model for the Critically Endangered flapper skate (Dipturus intermedius) across the NE Atlantic shelf, integrating environmental and fishing pressure data. Results highlight three core regions of presence off the coasts of Scotland and western Ireland, likely reflecting natural refugia and the ...
Sophie L. Loca, Patrick C. Collins, Amy Garbett, Ryan McGeady, James Thorburn, Chris McGonigle   +5 more
wiley   +1 more source

Health Monitoring for Electro-mechanical Nose Landing Gear Door Actuator of a UAV, Based on Simulation Modelling and Data-driven Techniques

Chemical Engineering Transactions, 2013
Nowadays, the aerospace industry has to maintain and improve its global competitiveness and meet the demand of the new requirements which are constantly emerging.
S. Ferreiro, A. Jimenez, J. Madariaga, E. Novillo, S. Fernandez, A. Alia, E. Morante   +6 more
doaj   +1 more source

Crash tests of four identical high-wing single-engine airplanes [PDF]

Four identical four place, high wing, single engine airplane specimens with nominal masses of 1043 kg were crash tested at the Langley Impact Dynamics Research Facility under controlled free flight conditions.
Hayduk, R. J., Vaughan, V. L., Jr.
core   +1 more source

Nose-Over and Nose-Down Accidents in General Aviation: Tailwheels and Aging Airplanes

Safety
Safety in General Aviation has been a continuous concern. About 12% of all airplane accidents in General Aviation involve nose-overs and nose-down events.
Alex de Voogt, Kayla Louteiro
doaj   +1 more source

F-15 SMTD low speed jet effects wind tunnel test results [PDF]

Key results from low speed wind tunnel testing of the F-15 STOL and Maneuver Technology Demonstrator (SMDT) with thrust reversers are presented. Longitudinally, the largest induced increments in the stability and control occur at landing gear height ...
Blake, William B.
core   +1 more source

Efficient Driving Plan and Validation of Aircraft NLG Emergency Extension System via Mixture of Reliability Models and Test Bench

Applied Sciences, 2019
The emergence extension system (a mechanical system) of nose landing gear (NLG) seriously influences the reliability, safety and airworthiness of civil aircrafts.
Zhengzheng Zhu, Yunwen Feng, Cheng Lu, Chengwei Fei   +3 more
doaj   +1 more source

Static Footprint Local Forces, Areas, and Aspect Ratios for Three Type 7 Aircraft Tires [PDF]

The National Tire Modeling Program (NTMP) is a joint NASA/industry effort to improve the understanding of tire mechanics and develop accurate analytical design tools. This effort includes fundamental analytical and experimental research on the structural
Howell, William E., Perez, Sharon E., Vogler, William A.   +2 more
core   +1 more source

F-106B airplane active control landing gear drop test performance [PDF]

Aircraft dynamic loads and vibrations resulting from landing impact and from runway and taxiway unevenness are recognized as significant factors in causing fatigue damage, dynamic stress on the airframe, crew and passenger discomfort, and reduction of ...
Daugherty, Robert H., Howell, William E., Mcgehee, John R., Vogler, William A.   +3 more
core   +1 more source

Simulation-Based Assessment of a Full-Scale Installed Quiet Landing Gear [PDF]

Full-scale simulations of a Gulfstream G-III aircraft, performed in support of the NASA Acoustic Research Measurements flights, are presented to complement results discussed in earlier studies.
Duda, Benjamin, Ferris, Ryan J., Khorrami, Mehdi R.   +2 more
core   +1 more source