Results 211 to 220 of about 891,158 (301)

Alternative techniques for cardiopulmonary resuscitation in extreme environments - A scoping review. [PDF]

Resusc Plus
Overbeek R, Liebold F, Johnson Kolaparambil Varghese L, Adams NB, Schmitz J, Neumann M, Dusse F, Stoll SE, Wetsch WA, Hinkelbein J.   +9 more
europepmc   +1 more source

Operational aspects of V/STOL aircraft [PDF]

Whitten, J. B.
core   +1 more source

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Helicopter Engine Connecting Rod Failures

ASM Failure Analysis Case Histories: Air and Spacecraft, 2019
Abstract In a helicopter engine connecting rod, high-cycle, low-stress fatigue fractures in bolts and arms progressed about 75% across the section before the final rupture. Factors involved were insufficient specified preload, inadequate tightening during assembly, and engine overspeed.
Jivan B. Shah
openaire   +2 more sources

Helicopters Engine Integration: From CFD Deep Airflow Analysis To General Impact On Helicopter Engine Performance

AIAA AVIATION 2022 Forum, 2022
Alexandre Di Marco, Claire Lecauchois, Benoit Fayard, Pierre Sagaut   +3 more
openaire   +2 more sources

Sustainability Assessment in Piston-Prop Helicopter Engine

2016
About 75% of the world’s energy requirement is provided by fossil fuels, and there are various improvement efforts in all fields to ensure the effective use of available sources, taking into consideration the gradual decrease in fossil fuels. Several approaches are used against the decrease in energy sources including the concept of sustainability ...
Yıldırım, E., Altuntaş, Önder, Hikmet, Karakoç, T., Mahir, Nevin   +3 more
openaire   +2 more sources

Integrated modeling and coupling characteristics analysis of helicopter/engine/infrared suppressor

International Journal of Turbo & Jet-Engines, 2023
In order to explore the influence of the infrared stealth technology on the performance of the integrated helicopter/engine system, an integrated modeling method of helicopter/engine/infrared suppressor is proposed.
Benlin Cheng, Xing Huang, Chuang Ji, Wencheng Zhong, Haibo Zhang   +4 more
semanticscholar   +1 more source

Fiber Bragg Grating temperature monitoring of helicopter engine mechanical parts on an engine test bench

27th International Conference on Optical Fiber Sensors, 2022
Fiber Bragg Grating temperature monitoring results of two mechanical parts located in the exhaust system of a helicopter engine test bench are reported and compared to thermocouple and SWIR camera measurements.
J. Quélène, N. Salhi, Rudy Desmarcheliers, M. P. Huy, R. Cotillard, S. Rougeault, D. Pohl, G. Laffont   +7 more
semanticscholar   +1 more source

Failure analysis of a crankshaft of a helicopter engine

Engineering Failure Analysis, 2019
A detailed analysis of a crankshaft failure belonging to a helicopter engine is presented. The main objective of this work was to analyze the characteristics of the failure and determine the root cause of the failure of the crankshaft.
V. Infante, Marcos Airton de Sousa Freitas, M. Fonte   +2 more
semanticscholar   +1 more source

Failure analysis of compressor blades of a helicopter engine

Engineering Failure Analysis, 2019
This paper presents a detailed analysis of the failure of compressor blades from a helicopter engine. The analysis presented in this paper is a result of a preflight inspection carried out by a line mechanic where damage was detected in the compressor ...
V. Infante, M. Freitas
semanticscholar   +1 more source

Multispecies Flow Indirect-Noise Modeling Re-Examined with a Helicopter-Engine Application

AIAA Journal
Composition noise has recently received increasing attention for its potential to contribute significantly to the indirect noise mechanism. In this study, the importance and definition of composition noise are revisited by proposing a new proper ...
Y. Gentil, G. Daviller, Stéphane Moreau, T. Poinsot   +3 more
semanticscholar   +1 more source