NF-104A Lateral Directional Stability Analysis

Abstract

These documents are historical documents for the NF-104A. Part of the NF-104A flight test program was to investigate the lateral-directional stability at high Mach numbers with the speed brakes extended. This flight condition was encountered during the entry following a zoom mission and no previous data were available. The data available for the speed brakes retracted configuration indicated that the directional stability parameter, C(-n) decreased with increasing Mach number, and it was also known that the speed brakes detracted from the stability. The study received impetus when a lateral-directional oscillation was encountered on several NF-104 flights during the recovery from the high altitude portion of the zoom mission. In each case where these oscillations were encountered, the following conditions existed: High Mach number, Angle of attack greater than 5 degrees, Jet engine shut down, Rocket engine off, Stability augmentation on, Speed brakes extended, Reaction control system (RCS) damper inactive.

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Document Details

Document Type
Technical Report
Publication Date
Mar 03, 2022
Accession Number
AD1168432

Entities

People

  • C D Zaleski

Organizations

  • Air Force Test Center

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Altitude
  • Control Systems
  • Directional
  • Engines
  • High Altitude
  • Jet Engines
  • Mach Number
  • Oscillation
  • Reaction Control Systems
  • Recovery
  • Rocket Engines
  • Rockets

Readers

  • Aerospace Engineering
  • Control Systems Engineering.
  • Systems Analysis and Design