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Study of the single body yawed-wing aircraft conceptAreas relating to the development and improvement of the single-fuselage, yawed-wing transonic transport concept were investigated. These included: (1) developing an alternate configuration with a simplified engine installation;(2) determining a structural design speed placard that would allow the engine-airframe match for optimum airplane performance; and (3) conducting an aeroelastic stability and control analysis of the yawed-wing configuration with a flexible wing. A two-engine, single-fuselage, yawed-wing configuration was developed that achieved the Mach 1.2 design mission at 5560 km (3000 nmi) and payload of 18,140 kg (40,000 lb) with a gross weight of 217,700 kg (480,000 lb). This airplane was slightly heavier than the aft-integrated four-engine configuration that had been developed in a previous study. A modified structural design speed placard, which was determined, resulted in a 6% to 8% reduction in the gross weight of the yawed-wing configurations. The dynamic stability characteristics of the single-fuselage yawed-wing configuration were found to be very dependent on the magnitude of the pitch/roll coupling, the static longitudinal stability, and the dihedral effect.
Document ID
19740019372
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Kulfan, R. M. (Boeing Commercial Airplane Co. Seattle, WA, United States)
Nisbet, J. W. (Boeing Commercial Airplane Co. Seattle, WA, United States)
Neuman, F. D. (Boeing Commercial Airplane Co. Seattle, WA, United States)
Hamilton, E. J. (Boeing Commercial Airplane Co. Seattle, WA, United States)
Murakami, J. K. (Boeing Commercial Airplane Co. Seattle, WA, United States)
Mcbarron, J. P. (Boeing Commercial Airplane Co. Seattle, WA, United States)
Kumasaka, K. (Boeing Commercial Airplane Co. Seattle, WA, United States)
Date Acquired
September 3, 2013
Publication Date
May 1, 1974
Subject Category
Aerodynamics
Report/Patent Number
NASA-CR-137483
Accession Number
74N27485
Funding Number(s)
CONTRACT_GRANT: NAS2-7031
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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