Accession Number:

AD0840975

Title:

ALTITUDE DEVELOPMENTAL TESTING OF THE J-2 ROCKET ENGINE IN PROPULSION ENGINE TEST CELL (J-4) (TESTS J4-1801-34 THROUGH 36)

Descriptive Note:

Interim rept.

Corporate Author:

ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AFB TN

Personal Author(s):

Report Date:

1968-10-01

Pagination or Media Count:

201.0

Abstract:

Twelve firings of the Rocketdyne J-2 rocket engine SN 2047 were conducted in Test Cell J-4 of the Large Rocket Facility on March 27 and April 2 and 10, 1968. These firings were accomplished during test periods J4-1801-34, J4-1801-35, and J4-1801-36 at pressure altitudes of approximately 100,000 ft at engine start to investigate S-IVB 1 first burn firings, 2 6-hr orbital coast restart simulation firings, 3 80-min orbital coast restart simulation firings, and 4 a partial transition firing to evaluate thrust chamber conditioning temperature effects on engine start transients. Engine operation was satisfactorily accomplished for all firings. One abort resulted when a leak developed in the diaphragm of the engine pneumatic regulator. The accumulated firing duration for the three test periods was 205 sec. The total firing duration of this engine at AEDC through test period J4-1801-36 is 1141 sec resulting from 91 engine firings.

Subject Categories:

  • Liquid Propellant Rocket Engines
  • Liquid Rocket Propellants
  • Ground Support Systems and Facilities for Space Vehicles

Distribution Statement:

APPROVED FOR PUBLIC RELEASE