Review and Experimental Survey Of Flapped Exhaust Performance | Zendy

Emmanuel Bénard | Zendy; John Watterson | Zendy; Richard Gault | Zendy; Jennifer Richardson | Zendy

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Review and Experimental Survey Of Flapped Exhaust Performance

Author(s) -

Emmanuel Bénard,

John Watterson,

Richard Gault,

Jennifer Richardson

Publication year - 2008

Publication title -

journal of aircraft

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.64

H-Index - 94

eISSN - 1533-3868

pISSN - 0021-8669

DOI - 10.2514/1.34238

Subject(s) - freestream , transonic , mach number , boundary layer , dimensionless quantity , mechanics , materials science , stagnation temperature , overall pressure ratio , pressure drop , naca airfoil , turbulence , reynolds number , physics , thermodynamics , heat transfer , aerodynamics , stagnation point , gas compressor

An extension to work by NACA was presented for a square flap opening from a large cavity to a transonic turbulent boundary layer. For flap angles from 18 to 45 deg, the discharge coefficients decrease at given stagnation pressure ratio between the cavity and the freestream. This loss of performance is likely linked to competitive flow features. At a given flap deflection and Mach number, dimensionless discharge increases nearly linearly with pressure ratio

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