Accession Number:

AD0829121

Title:

Surface-Temperature Measurements of Solid Propellants During Ignition

Descriptive Note:

Technical rept. Jun 1966-Jul 1967

Corporate Author:

UTAH UNIV SALT LAKE CITY DEPT OF CHEMICAL ENGINEERING

Personal Author(s):

• Keller, John A.
• Baer, Alva D.
• Ryan, Norman W.

Report Date:

1967-08-01

Pagination or Media Count:

126.0

Abstract:

Surface temperatures were measured on ammonium perchlorate propellants during ignition by convective heating by use of an infrared radiation sensor. This study was conducted in a shocktube apparatus, and air or nitrogen was used for heating the propellant samples. Heat fluxes were in the range of 30 to 80 calsq cmsec. Surface temperature histories measured on propellant samples with smooth blackened surfaces are in good agreement with predictions of a thermal ignition model that considers the key ignition reaction to be localized at the propellant surface. Surface roughness effects and sample transparency to thermal radiation result in difficulties in relating the infrared detector output to surface temperature.

Descriptors:

• *SOLID ROCKET PROPELLANTS
• AMMONIUM PERCHLORATE
• COMPOSITE PROPELLANTS
• EMISSIVITY
• GRAPHICS
• HEAT TRANSFER
• HEAT TRANSFER COEFFICIENTS
• IGNITION
• INFRARED DETECTORS
• MATHEMATICAL MODELS
• MEASUREMENT
• SHOCK TUBES
• SURFACE ROUGHNESS
• SURFACE TEMPERATURE
• TABLES(DATA)
• THERMAL PROPERTIES

Subject Categories:

• Combustion and Ignition
• Solid Rocket Propellants

Distribution Statement:

APPROVED FOR PUBLIC RELEASE