Accession Number:

AD0735286

Title:

Advanced ACS Valva Sealing Surface Compatibility Investigation

Descriptive Note:

Final rept. 15 May 1970-15 Jul 1971

Corporate Author:

MARQUARDT CO VAN NUYS CA

Report Date:

1971-09-01

Pagination or Media Count:

206.0

Abstract:

A research program was necessitated by the finding that a developed magnetically linked bipropellant valve showed extensive finish deterioration of both the poppet and seat mating surfaces after being operated in chlorine pentafluoride CPF. The same valve design, using the same materials of construction, performed properly when operated using liquid monomethyl hydrazine. Surface roughness measurements on CPF exposed poppets furthermore revealed that the surface finish deterioration was far more severe in sealing and impact areas than on nonsealing surfaces. The prime objective, that of determining the mechanism of sealing surface deterioration, was accomplished during the program. In addition, design parameters were evolved which can lead to a successful design meeting all of the design objectives for valve operational performance in fluorinated oxidizers.

Subject Categories:

  • Pumps, Filters, Pipes, Tubing, Fittings and Valves
  • Liquid Rocket Propellants

Distribution Statement:

APPROVED FOR PUBLIC RELEASE