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A Preliminary Design Analysis of a Multi-Channel Ejector Thrust Augmentation Concept with Oval or Rectangular Air Supply Ducts.


AD744839

Publication Date 1972
Personal Author Wright, D. C.; Allen, J. G.; Meholick, W. N.; Salter, F. R.; Ashby, R.
Page Count 75
Abstract The report represents the results of a minimum preliminary design and analysis to determine the feasibility of achieving improved mixing efficiency with area ratios (A2 to A0) near 27 for the multichannel ejector thrust augmentation concept. This is to be accomplished by replacing the existing cylindrical air supply ducts presently being used on an existing four channel ejector wing model in Building 71B, G Bay, at WPAFB, Dayton, Ohio, with oval or rectangular ducts incorporating an improved ejector nozzle design. This design study has been based on the use of the present Lycoming PLF1A-2 engine and includes investigations into the feasibility of eliminating the bleed air from the plenum and its effects in regard to engine performance. (Author)
Keywords
  • Short take-off planes
  • Nozzle area ratio
  • Thrust augmentation
  • Duct inlets
  • Shear stresses
  • Buckling(Mechanics)
  • Sandwich construction
  • Compressive properties
  • Exhaust diffusers
  • Configuration
  • Design criteria
Source Agency
  • Invalid Source Agency Code
NTIS Subject Category
  • 51C - Aircraft
Corporate Authors Bell Aerospace CO Buffalo N Y
Document Type Technical Report
Title Note Final rept. Aug-Dec 71.
NTIS Issue Number 197216
Contract Number
  • F33615-71-C-1802
A Preliminary Design Analysis of a Multi-Channel Ejector Thrust Augmentation Concept with Oval or Rectangular Air Supply Ducts.
A Preliminary Design Analysis of a Multi-Channel Ejector Thrust Augmentation Concept with Oval or Rectangular Air Supply Ducts.
AD744839

  • Short take-off planes
  • Nozzle area ratio
  • Thrust augmentation
  • Duct inlets
  • Shear stresses
  • Buckling(Mechanics)
  • Sandwich construction
  • Compressive properties
  • Exhaust diffusers
  • Configuration
  • Design criteria
  • Invalid Source Agency Code
  • 51C - Aircraft
  • F33615-71-C-1802
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