NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Fuselage upwash effects on RSRA rotor systemsThe effects of RSRA fuselage configurations on rotor performance and loads have been quantified analytically by means of currently available potential flow and rotor analysis. Four configurations of the Rotor Systems Research Aircraft (RSRA) were considered in this study. They were: (1) fuselage alone (conventional helicopter); (2) fuselage with auxiliary propulsion; (3) fuselage with wings (auxiliary lift); and (4) fuselage with both auxiliary lift propulsion. The rotor system investigated was identical to a CH-47D front rotor except that it had four instead of three blades. Two scaled-down versions of the same rotor were also analyzed to determine the effect of rotor scale on the fuselage upwash effects. The flight conditions considered for the upwash study are discussed. The potential flow models for the RSRA configuration, with and without the wings and the auxiliary propulsion system, are presented. The results of fuselage/wing/propulsion system upwash on performance and loads are also presented.
Document ID
19850022702
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Cowan, J. (Boeing Vertol Co. Philadelphia, PA, United States)
Dadone, L. (Boeing Vertol Co. Philadelphia, PA, United States)
Date Acquired
September 5, 2013
Publication Date
August 1, 1985
Subject Category
Aerodynamics
Report/Patent Number
NAS 1.26:177349
NASA-CR-177349
D210-12359-1
Accession Number
85N31015
Funding Number(s)
PROJECT: RTOP 505-42-51
CONTRACT_GRANT: NAS2-11307
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Related Records

There are no records associated with this record.
No Preview Available