Accession Number:

AD0861262

Title:

Altitude Developmental Testing of the J-2S Rocket Engine in Propulsion Engine Test Cell (J-4) (Tests J4-1902-09 and J4-1902-10)

Descriptive Note:

Technical rept.

Corporate Author:

ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AFB TN

Personal Author(s):

Report Date:

1969-11-01

Pagination or Media Count:

85.0

Abstract:

Five idle-mode firings of the Rocketdyne J-2S rocket engine SN J- 112-1A were conducted in Test Cell J-4 of the Large Rocket Facility on April 17 and 24, 1969. These firings were accomplished at pressure altitudes of approximately 100,000 ft at engine start. The objectives were 1 to investigate engine idle-mode operating characteristics with a redesigned injector oxidizer idle-mode compartment consisted of the injector posts in the tenth row from the center of the injector 2 to determine fuel injection density for varying pump inlet pressures and 3 to determine engine idle-mode performance. The lowest injection density was 0.055 lbmcu. ft. with the thrust chamber bypass valve closed. Engine average characteristic velocity for this injector configuration was about 2.6 percent greater than that recorded during tests with the previous injector.

Subject Categories:

  • Liquid Propellant Rocket Engines
  • Liquid Rocket Propellants

Distribution Statement:

APPROVED FOR PUBLIC RELEASE