Accession Number : ADP006017

Title :   Propellant Grain Design,

Corporate Author : SNIA BPD ROME (ITALY) DEFENSE AND SPACE DIV

Personal Author(s) : Scippa, S.

Report Date : APR 1988

Pagination or Media Count : 20

Abstract : This lecture presents a general overview of the current methods used at SNIA BPD in designing solid rocket motor propellant grains. The internal ballistics aspect in grain design is emphasized. An overview of what are the general requirements (Thrust vs time curve, volumetric constraints, etc.), the available technologies (propellant types, manufacturing processes, etc.) and the method for selecting the most appropriate one is presented. Then, the methods used for grain design are summarized. The lecture deals, in particular, with the methods for propellant formulation choice, design of internal geometry, propellant characterization (performances, internal ballistics, etc.). An analysis of the predictability factors (various mechanisms that can affect the thrust curve, i.e.: erosive burning, hump factor, etc.), and how they can be taken into account for contingency planning is reported. The experimental tests commonly used for grain design validation are summarized.

Descriptors :   ROCKET PROPELLANT GRAINS, INTERIOR BALLISTICS, COMBUSTION, THRUST, SOLID ROCKET PROPELLANTS, MATHEMATICAL PREDICTION, OPTIMIZATION, METHODOLOGY, SOLID PROPELLANT ROCKET ENGINES, ITALY.

Subject Categories : Solid Rocket Propellants

Distribution Statement : APPROVED FOR PUBLIC RELEASE