Accession Number : ADA213706

Title :   High School Apprenticeship Program. Volume 2.

Descriptive Note : Annual rept.,

Corporate Author : UNIVERSAL ENERGY SYSTEMS INC DAYTON OH

Personal Author(s) : Darrah, Rodney C.

Report Date : DEC 1988

Pagination or Media Count : 494

Abstract : Ballistic modifiers are chemicals, that when added to a propellent, alter the magnitude of the burn rate and the rate of burn over a series of pressures (slope). Often very little, less than one tenth of one percent, needs to be added to the propellent formulation to accomplish this. Limited studies of how and why ballistic modifiers work have been previously conducted. Certain chemicals were known to have certain effects. For the purpose of this study, two hypotheses were evolved and investigated--either cation charge or cation size caused the changes in the burn rate and slope of a propellant. The results of this study will be used in an upcoming project at the Astronautics Laboratory. (JES)

Descriptors :   *BURNING RATE, *PROPELLANTS, *ADDITIVES, APPRENTICESHIP, ASTRONAUTICS, CATIONS, CHEMICALS, HYPOTHESES, LABORATORIES, PRESSURE, SCHOOLS, SECONDARY, SIZES(DIMENSIONS).

Subject Categories : Ammunition and Explosives
      Liquid Rocket Propellants
      Solid Rocket Propellants
      Combustion and Ignition

Distribution Statement : APPROVED FOR PUBLIC RELEASE