Propulsion System Models for Rotorcraft Conceptual Design [PDF]
The conceptual design code NDARC (NASA Design and Analysis of Rotorcraft) was initially implemented to model conventional rotorcraft propulsion systems, consisting of turboshaft engines burning jet fuel, connected to one or more rotors through a ...
Johnson, Wayne
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Fuel conservation merits of advanced turboprop transport aircraft [PDF]
The advantages of a propfan powered aircraft for the commercial air transportation system were assessed by the comparison with an equivalent turbofan transport.
Revell, J. D., Tullis, R. H.
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Flyover noise characteristics of a tilt-wing V/STOL aircraft (XC-142A) [PDF]
A field noise measurement investigation was conducted during the flight testing of an XC-142A tilt-wing V/STOL aircraft to define its external noise characteristics.
Henderson, H. R. +2 more
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Multipoint Design and Optimization of a Turboshaft Engine for a Tiltwing Turboelectric Vertical Takeoff Landing Air Taxi [PDF]
This paper describes the design of a turboshaft engine for a tiltwing air taxi application. In this case, the tiltwing air taxi is intended to fly a 400 nm mission with up to fifteen passengers.
Chapman, Jeffryes W.
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Source Apportionment of Airborne Dioxins, Furans, and Polycyclic Aromatic Hydrocarbons at a United States Forward Operating Air Base During the Iraq War. [PDF]
J Occup Environ Med, 2016 Masiol M +4 more
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A Survey of Current Rotorcraft Propulsion Health Monitoring Technologies [PDF]
A brief review is presented on the state-of-the-art in rotorcraft engine health monitoring technologies including summaries on current practices in the area of sensors, data acquisition, monitoring and analysis.
Delgado, Irebert R. +2 more
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Aircraft engine exhaust emissions and other airport-related contributions to ambient air pollution: A review. [PDF]
Atmos Environ (1994), 2014 Masiol M, Harrison RM.
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NASA Quiet Clean General Aviation Turbofan (QCGAT) program status [PDF]
The suitability of large engine technology to reduce noise, emissions, and fuel consumption of small turbine engines and develop new technology where required is determined.
Bresnahan, D. L., Sievers, G. K.
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Investigation on rub-impact response characteristics of gas generator rotor system under external excitation. [PDF]
Sci RepZhang H, Liu T, Zhao H, Wang Q.
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Judgment tests of aircraft noise [PDF]
Psychological tests of human responses to aircraft noise ...
Johnson, P. J. +2 more
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