Results 161 to 170 of about 847,370 (336)
Cost dynamics of helicopter emergency services: A Hungarian example. [PDF]
Heliyon, 2023 Szabó BÁ, István Kobolka, Zádori I.
europepmc +1 more source
The design of a turboshaft speed governor using modern control techniques [PDF]
The objectives of this program were: to verify the model of off schedule compressor variable geometry in the T700 turboshaft engine nonlinear model; to evaluate the use of the pseudo-random binary noise (PRBN) technique for obtaining engine frequency ...
Delosreyes, G., Gouchoe, D. R.
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Aeronautical Engineering: A special bibliography with indexes, supplement 54 [PDF]
This bibliography lists 316 reports, articles, and other documents introduced into the NASA scientific and technical information system in January ...
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A Quiet Helicopter for Air Taxi Operations [PDF]
NASA is exploring rotorcraft designs for VTOL air taxi operations, also known as urban air mobility (UAM) or on-demand mobility (ODM) applications. Several concept vehicles have been developed, intended to focus and guide NASA research activities in ...
Johnson, Wayne
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Scottish contributions to rotary wing flight [PDF]
This paper charts the history of rotorcraft development in Scotland. Beginning with the early efforts of Mumford to achieve rotor-borne flight, through the major technology advances of G and J Weir in the 30s and 40s up to present day activities.
Cameron, D., Thomson, D.G.
core
Nonlinear controller design for unmanned helicopter flight platform. [PDF]
Sci RepRuchun W.
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Helicopter noise regulations: An industry perspective [PDF]
A review of helicopter noise measurement programs and noise reduction/economic studies of FAA is given along with a critique of a study which addresses the economic impact of noise reduction on helicopter noise.
Wagner, R. A.
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Selection of helicopter bases and transport modes to minimize pre-hospital times in Iceland. [PDF]
Scand J Trauma Resusc Emerg MedNguyen P +3 more
europepmc +1 more source