Results 81 to 90 of about 19,013 (214)
Rotorcraft-based emergency medical services in the Caribbean Basin [PDF]
There is a pressing need for improved health care in general and emergency health care in particular throughout the Caribbean Basin. The importance of rotorcraft as an integral part of the needed system of emergency medical care in the region was ...
Alton, L. R., Smith, R. W.
core +1 more source
Extension of the discontinuous Galerkin finite element method to viscous rotor flow simulations [PDF]
, 2005 Heavy vibratory loading of rotorcraft is relevant for many operational aspects of helicopters, such as the structural life span of (rotating) components, op- erational availability, the pilot’s comfort, and the ef- fectiveness of weapon targeting systems.
Boelens, O.J. +3 more
core +1 more source
Design of a Ballistically-Launched Foldable Multirotor [PDF]
, 2019 The operation of multirotors in crowded environments requires a highly reliable takeoff method, as failures during takeoff can damage more valuable assets nearby.
Bouman, Amanda +5 more
core +2 more sources
International Journal of Aerospace EngineeringBolted connections are widely used in assembly structures, and their dynamic characteristics are often affected by stiffness, damping, excitation, and other factors.
Zhe Chen, Qi-jun Zhao, Guo-chen Zhou
doaj +1 more source
Techniques for designing rotorcraft control systems [PDF]
This report summarizes the work that was done on the project from 1 Apr. 1992 to 31 Mar. 1993. The main goal of this research is to develop a practical tool for rotorcraft control system design based on interactive optimization tools (CONSOL-OPTCAD) and ...
Barlow, Jewel, Levine, William S.
core +1 more source
Variable-speed rotor helicopters: Performance comparison between continuously variable and fixed-ratio transmissions [PDF]
, 2016 Variable speed rotor studies represent a promising research field for rotorcraft performance improvement and fuel consumption reduction. The problems related to employing a main rotor variable speed are numerous and require an interdisciplinary approach.
Benini, Ernesto +1 more
core +1 more source
Journal of Aerospace Technology and Management, 2022 In order to achieve aviation safety, integrity of two pillars is essential: product and operations. Regarding product integrity of transport category rotorcraft, its requirements are established in USA by the Federal Aviation Administration (FAA) Part 29,
Clementino Rodrigues Veras Neto +1 more
doaj
International Journal of Aerospace Engineering, 2020 The generation of lift and thrust mainly depends on the formation of low-pressure vortices above the arc groove on the leading edge of the Fan-wing, which makes the lift and thrust have a strong coupling relationship. How to decouple and control the lift
Du Siliang, Zhao Qijun, Tang Zhengfei
doaj +1 more source
The role of the research simulator in the systems development of rotorcraft [PDF]
The potential application of the research simulator to future rotorcraft systems design, development, product improvement evaluations, and safety analysis is examined.
Deel, A., Statler, I. C.
core +1 more source
Shock and Vibration, 2017 A special periodic strut is developed to reduce the helicopter cabin noise in this paper. The strut exhibits unique dynamic characteristics which can isolate the gearbox vibrations from transferring to the fuselage and radiating noise.
Yang Lu, Fengjiao Wang, Xunjun Ma
doaj +1 more source