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Flap survey test of a combined surface blowing model: Flow measurements at static flow conditionsThe Combined Surface Blowing (CSB) V/STOL lift/propulsion system consists of a blown flap system which deflects the exhaust from a turbojet engine over a system of flaps deployed at the trailing edge of the wing. Flow measurements consisting of velocity measurements using split film probes and total measure surveys using a miniature Kiel probe were made at control stations along the flap systems at two spanwise stations, the centerline of the nozzle and 60 percent of the nozzle span outboard of the centerline. Surface pressure measurements were made in the wing cove and the upper surface of the first flap element. The test showed a significant flow separation in the wing cove. The extent of the separation is so large that the flow into the first flap takes place only at the leading edge of the flap. The velocity profile measurements indicate that large spanwise (3 dimensional) flow may exist.
Document ID
19810015488
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Fukushima, T. (Boeing Vertol Co. Philadelphia, PA, United States)
Date Acquired
September 4, 2013
Publication Date
March 1, 1978
Subject Category
Aerodynamics
Report/Patent Number
NASA-CR-152124
Accession Number
81N24023
Funding Number(s)
CONTRACT_GRANT: NAS2-9693
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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