Comparison of AEDC 4T and CALSPAN 8-ft Wing Tunnels for FA-18C/JDAM

Abstract

Flight test results for MK-84 Joint Direct Attack Munition (JDAM) separation from an F/A-18C allow for direct comparison between the Arnold Engineering Development Center 4 ft X 4 ft and CALSPAN 8 ft X 8 ft transonic wind tunnel data. Both freestream and Captive Trajectory System flow-field grid surveys were compared. Wind tunnel data tended to agree relatively well between wind tunnels. Wind tunnel data were input into the Navy Generalized Separation Package store separation simulation software. Comparisons were made between the flight paths derived from both wind tunnels to actual flight test data. Trajectory data were then used to calculate minimum miss distances between the JDAM and F-18. While it was expected that data from the larger tunnel would result in simulations closer to flight testing, both data sets resulted in similar results. Most differences can be attributed to Mach number sensitivity.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jan 13, 2000
Accession Number
ADA376031

Entities

People

  • E. Ray

Organizations

  • Naval Air Warfare Center

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aerial Warfare
  • Aeronautics
  • Aircraft Models
  • Aircrafts
  • Astronautics
  • Boundary Layer
  • Flight
  • Fuel Tanks
  • Mach Number
  • Miss Distance
  • Models
  • Satellite Guided Weapons
  • Shock Waves
  • Simulations
  • Telemetry
  • Transonic Wind Tunnels
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Aerospace Test and Evaluation
  • Fluid Dynamics.
  • Regression Analysis.

Technology Areas

  • Space
  • Space - Hall-Effect Thruster
  • Space - Spacecraft Maneuvers