An Analytical Solution of Lift Loss for a Round Platform with a Central Lifting Jet.

Abstract

An analysis of the lift loss for a round planform fitted with a centrally located round jet is presented. The pressure distribution over the lower surface of the planform is solved analytically by matching an inner viscous solution with an outer potential solution. By comparing the calculated pressure distributions with NACA experimental data, satisfactory agreement has been obtained, although the planforms are not exactly the same. In addition, Wyatt's formula for the lift loss is found to be essentially valid, but only under limited conditions, and an improved formula is suggested. Additional works, both experimental and theoretical, needed to solve the lift loss problem are discussed with recommendations.

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Document Details

Document Type
Technical Report
Publication Date
Mar 10, 1980
Accession Number
ADA325840

Entities

People

  • K. T. Yen

Organizations

  • Naval Air Warfare Center Warminster

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Aerodynamic Characteristics
  • Aeroelasticity
  • Aircrafts
  • Computational Fluid Dynamics
  • Computational Science
  • Equations
  • Experimental Data
  • Flow
  • Hovering
  • Lifting Bodies
  • Measurement
  • Mechanical Properties
  • Numerical Analysis
  • Pressure Distribution
  • Reynolds Number
  • Short Takeoff Aircraft
  • Static Pressure

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.
  • Calculus or Mathematical Analysis
  • Combustion and Flow Dynamics.