Accession Number:

AD0446309

Title:

ROCKET THRUST STAND SIMULATION OF SPACE VEHICLE FLIGHT DYNAMICS

Descriptive Note:

Corporate Author:

ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AFB TN

Report Date:

1964-09-01

Pagination or Media Count:

155.0

Abstract:

The concept of rocket thrust stand simulation of space vehicle flight dynamics is developed. An electro-mechanical system is described wherein the space vehicle rocket motor attach point motion may be simulated. The physical dimensions of the system are small such that it may be used in conjunction with current environmental test cells. The degree of space vehicle simulation is a consequence of the limitations on the excursions of the active strut thrust stand. The resulting motion is shown to be vibratory with respect to the center of mass of the space vehicle system. Main emphasis is on the development of the analog simulator differential equations which ultimately serve as inputs to the mechanical system. These equations produce the vehicle motion as a function of the physically measurable thrust stand quantities, indicated thrust, and motor acceleration. The development of these equations consists of elimination of the steady-state component of vehicle motion and obtaining analog stability without interfering with the motor simulation. The resulting equations are presented in a general form so that simulation may be accomplished for any space vehicle whose dynamic modes may be described by time dependent, analog-solvable differential equations.

Subject Categories:

  • Astronautics
  • Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE