Results 131 to 140 of about 7,860,213 (302)

Structure design and breakaway failure analysis of fuse-pin for civil main landing gear

Hangkong gongcheng jinzhan
The landing gear should be able to achieve safe and rapid separation from the aircraft body under overload conditions. To clarify the effect of breakaway groove on the breakaway load of emergency fuse-pin for civil main landing gear, a series of FEM ...
FU Liang, YANG Le, LIU Panglun, LUO Hang, MENG Qinghe, JIANG Bingyan   +5 more
doaj   +1 more source

Biological Studies. Annual Report, Part 5, September 1972

, 1972
(54 page document)Office of Sea Grant Programs, National Oceanic and Atmospheric Administration, Department of CommerceAssociation of Monterey Bay Area GovernmentsContains four reports.

core  

Tailoring Microstructure and Hardness in Maraging 300 Steel via 2.4 wt.% Niobium Addition and Controlled Aging Treatments

steel research international, EarlyView.
High Nb (2.4 wt.%) addition to Maraging 300 steel drives lattice distortion and nanoscale Nb–Mo‐rich precipitation, confirmed by energy‐dispersive X‐ray spectroscopy mapping (Mo ~5.4 wt.%, Nb ~2.5 wt.%). Nanoindentation reveals strong matrix hardening (H >4.8 GPa) at 480°C aging, while 560°C induces ~1.92 vol.% reverted austenite, enabling tunable ...
Laylla Sharon B. Peixoto, Mohammad Masoumi, Luís Henrique N. de Lima, Marcos Natan da Silva Lima, Luis Flávio Gaspar Herculano, Isabel Ferreira de Barros, Geronimo Perez, Maria Vittoria Moraschini Reis, Hamilton Ferreira Gome Abreu, Marcelo J. Gomes da Silva   +9 more
wiley   +1 more source

Effect of Different Surface Treatments on Resistance to Abrasive Wear of AISI 4140 Steel

steel research international, EarlyView.
This study investigates how different surface treatments affect resistance to abrasive wear of AISI 4140 Steel. The wear rate was significantly higher in samples subjected to conventional treatments than in samples coated using the HVOF process, demonstrating the superior efficiency of coatings applied by thermal spraying in mitigating abrasive wear ...
Everton Freitas de Oliveira, Tomasz Trzepieciński, Valmir Dias Luiz, Jorge Luis Coleti   +3 more
wiley   +1 more source

Embedded Interactions and Selective Disclosure: Network Effects on Conversations aboard Skylab

Symbolic Interaction, EarlyView.
How do absent others influence our interactions? We argue in this paper that interactions are embedded within networks formed by chains of specific relationships between known third parties. The anticipation of future interactions with external others conditions our interpretation of the current situation and affects our behavior in the interaction. We
Michael Schultz, Leslie DeChurch, Noshir Contractor   +2 more
wiley   +1 more source

Trace Element Contamination in Top Predatory Elasmobranchs From the Southern Black Sea: Implications for Ecosystem Health and Risk Assessment

Environmental Toxicology, EarlyView.
ABSTRACT Environmental pollution resulting from the rapid increase in human population, urbanization, intensive use of chemicals in agriculture, and industrial development has reached a level that threatens natural life today. Trace elements are one of the most important factors causing significant levels of pollution in the environment and are added ...
Levent Bat, Süleyman Özdemir, Zekiye Birinci Özdemir, Ayşah Öztekin   +3 more
wiley   +1 more source

Den attendance by Arctic foxes experiencing 10 years of increasing tourism

Wildlife Biology, EarlyView.
Wildlife tourism is a growing industry, and an increasing number of people seek to observe and interact with wild animals in their natural surroundings. In Iceland, the native Arctic fox Vulpes lagopus is widespread and has been under heavy hunting pressure for centuries.
Ester Rut Unnsteinsdóttir, Borgný Katrínardóttir, Bruce J. McAdam   +2 more
wiley   +1 more source

Fatigue life analysis of main landing gear structure considering shock absorber travel

Hangkong gongcheng jinzhan
The fatigue life assessment for landing gears is challenging due to complexity of load cases and variation of shock absorber travel （SAT）. Focusing on the high-cycle fatigue （HCF） issue of the piston sliding tube （PSL），based on the whole geometric model ...
LIU Panglun, TANG Haihong, DING Jianbin, ZHANG Jie, YU Haowen, DUAN Heng, JIANG Bingyan   +6 more
doaj   +1 more source

Rancang Bangun Alat Peraga Ground Lock Main Landing Gear

Jurnal Teknologi Kedirgantaraan
The Landing gear is a critical component of an aircraft that supports its weight and absorbs shocks during takeoff and landing, as well as reduces air resistance during flight. The Ground Lock is a crucial part that locks the Landing gear in place when the aircraft is parked to ensure stability.
null Fadli Hidirsyah, null Mufti Arifin, null Riskha Agustianingsih   +2 more
openaire   +1 more source

Aeroelastic coupling and control means for reduction of main landing gear doors respsonses under operational conditions

, 2019
Main landing gear doors cover the landing gear bays, keeping the aerodynamic shape of the aircraft during flight. They are open for the deployment and the retraction of the landing gears in the approach phase before landing and after take-off ...
Schwochow, Jan, Aquilini, Carlo, Peng, Shia-Hui, Lubrina, Pascal, Abarca-Lopez, Ramon   +4 more
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