A Subsonic Method for Predicting the Separation Trajectories of Aircraft Stores in the Pitch Plane

Abstract

A subsonic three-degree-of-freedom method for predicting store separation trajectories is presented. The method combines the calculation of interference loading on aircraft stores due to F. Dan Fernandes with loads due to free air, ejector, and aerodynamic damping. Discussion of these loads is given, along with a presentation of the three-degree-of-freedom equations of motion and an approach to their solution. A computer program is developed and used to calculate trajectories for the M-117 bomb as carried on the inboard pylon of the F-4E. Comparisons of these trajectory profiles with wind tunnel captive-trajectory test results and existing theory are made. A user's guide and computer listing, excluding those subroutines due to F. Dan Fernandes, are given. Recommendations are made for possible improvements to the newly developed method.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1974
Accession Number
AD0787696

Entities

People

  • Joseph M. Manter

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aerodynamic Forces
  • Air Force
  • Air Force Facilities
  • Aircrafts
  • Center Of Gravity
  • Computer Programs
  • Computers
  • Coordinate Systems
  • Dynamics
  • Engineering
  • Equations Of Motion
  • Flight Paths
  • Flow Fields
  • Mach Number
  • Operating Systems
  • Simulations
  • Trajectories

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.
  • Computer Science.