Pilot's Flight Report XB-70 Flight 1-17

Abstract

There are two areas that need to be studied in the Mach number range above 2.8. First, the airplane buffets slightly all the way up to Mach 3. This sounds like the noise associated with driving at high speed in an automobile with a window open and can be felt in the airplane as a very light buffeting. The impression is that it might be an aerodynamic phenomenon around the cabin area. Secondly, upon reaching Mach 3, a very slight nose-up trim change occurred as if the shock wave was affecting the longitudinal trim of the airplane. Just after passing Mach 3, the longitudinal trim change appeared to go in the opposite direction causing the airplane to go nose down. The data in this area should be studied carefully so that the pilots can anticipate the trim change on subsequent flights.

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Document Details

Document Type
Technical Report
Publication Date
Apr 18, 2022
Accession Number
AD1168523

Entities

People

  • A. S. White
  • Joseph Cotton

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircrafts
  • Airplanes
  • Automobiles
  • Buffeting
  • Fixed Wing Aircraft
  • Mach Number
  • Physical Properties
  • Shock
  • Shock Waves
  • Vehicles
  • Waves

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.
  • Educational Psychology