Results 261 to 270 of about 847,370 (336)

A Study on Nonlinear Model Predictive Control for Helicopter/Engine with Variable Rotor Speed Based on Linear Kalman Filter

International journal of turbo & jet-engines, 2019
A novel control method combining nonlinear model predictive control (NMPC) with linear kalman filter (LKF) and adaptive notch filter (ANF) for an integrated helicopter/engine system with variable rotor speed is proposed to enhance the response ability of
Yong Wang, Qiangang Zheng, Haibo Zhang, Yuan Gao   +3 more
semanticscholar   +1 more source

EMC harness design applied to helicopter engine from the model to the measurement validation

2019 IEEE International Symposium on Electromagnetic Compatibility, Signal & Power Integrity (EMC+SIPI), 2019
A model based EMC design methodology applied to a wiring harness in a complex aeronautical system is presented in this article. Various studies in recent years on the topics of crosstalk and harness modelling and measurement, as well as on the ...
C. Jullien, J. Genoulaz, Anca Dieudonné, Jean-Julien Vonfelt, Gilles Crousier   +4 more
semanticscholar   +1 more source

COOLING OF TURBINE ENGINES IN HELICOPTERS

2021
<div class="section abstract"> <div class="htmlview paragraph">A tested method of data presentation and use is described herein. The method shown is a useful guide, to be used with care and to be improved with use.</div></div>
openaire   +1 more source

A Study on Torsional Vibration Suppression Method for an Integrated Helicopter / Engine System

International journal of turbo & jet-engines, 2018
In order to solve the problem of torsional vibration instability of control unit in helicopter/engine system during maneuver flight, this paper has conducted the research on the integrated torsional vibration suppression of helicopter/engine system ...
Yong Wang, Qiangang Zheng, Haibo Zhang, Mingyang Chen   +3 more
semanticscholar   +1 more source

Acceleration Performance of Helicopter Engines

Journal of Engineering for Gas Turbines and Power, 1987
The desirability of good acceleration behavior from helicopter gas turbine engines is discussed in the context of the increasing demand for helicopter maneuverability and safety. Features which result in improved engine handling qualities are discussed and reference is made to some analytical techniques which may be employed to assist in obtaining the ...
openaire   +1 more source

A Test Plant for Helicopter Engines

The Journal of the Royal Aeronautical Society, 1957
This Note describes the design and construction of a “ Tilting Test Bed ” for helicopter engines for Alvis Ltd., for which some onerous requirements were laid down (Fig. 1). The most important of these were that:—(i)Readings of engine torque and b.h.p.
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The Licensing of Helicopter Maintenance Engineers

The Journal of the Helicopter Association of Great Britain, 1953
I should like to commence by referring to the remarks made during the all-day discussion on Helicopter Maintenance organised by your Association in co-operation with the Society of Licensed Aircraft Engineers, which was held on 21st October, 1950 Reference was then made to the practical difficulties of drafting the requirements for helicopter licensing
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Mechanical Engineering Aspects of Helicopter Design

Proceedings of the Institution of Mechanical Engineers, Part D: Transport Engineering, 1985
The work of the early pioneers which led to the evolution of the current helicopter configurations is briefly reviewed. The major mechanical elements of the helicopter are then identified: the engine, transmission and blades analogous to the engine, transmission and wheels of a road vehicle.
Sir Basil Biackwell, V A B Rogers
openaire   +1 more source

Aerodynamic characteristics of helicopter engine side air intakes

Aircraft Engineering and Aerospace Technology, 2018
PurposeAerodynamic characteristics of engine side air intakes for a lightweight helicopter are investigated aiming to achieve an efficient engine airframe integration.
F. Knoth, C. Breitsamter
semanticscholar   +1 more source

The Control of Turboshaft Engines in Helicopters

SAE Technical Paper Series, 1965
<div class="htmlview paragraph">Written from the point of view of the helicopter constructor, this paper attempts a comprehensive review of the experience accumulated by airframe, engine, and control systems designers in the United Kingdom in the course of developing a wide variety of first generation turbine engined helicopters.</div> < ...
openaire   +1 more source