Improved Thrust Termination Modeling for Solid Rocket Motors

Award Information
Agency: Department of Defense
Branch: Missile Defense Agency
Contract: HQ0147-13-C-7135
Agency Tracking Number: B2-1863
Amount: $999,991.00
Phase: Phase II
Program: SBIR
Awards Year: 2013
Solitcitation Year: 2010
Solitcitation Topic Code: MDA10-022
Solitcitation Number: 2010.3
Small Business Information
Sierra Engineering, Inc. formerly Johnso
603 East Robinson Street, Suite 7, Carson City, NV, -
Duns: 006620553
Hubzone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Daniel Greisen
 Sr Staff II / Corporate T
 (916) 363-2996
 dag@sierraengineering.com
Business Contact
 Margo Hornung
Title: Administrator/Corporate S
Phone: (775) 888-9122
Email: mah@sierraengineering.com
Research Institution
 Stub
Abstract
This effort addresses the need for a predictive model which characterizes the motor ejecta from thrust terminated and burn-to-depletion solid rocket motors. Two models will be developed: an engineering model that provides near term predictive capability and a high fidelity model which will provide guidance to improve the engineering models. The engineering model, developed under Phase I, will be extended, treating additional sources of debris and enfolding existing signature models for the validation phase of this effort. Predictions of solid motor performance and radar scene will be made for up to six flight tests for comparison to test data. Predictions will be made by coupling Sierra"s engineering model with a debris propagation and radar scene generation tool. Prior to the flight test predictions, Sierra will enhance its engineering model, including fragmentation predictions for charred internal insulation. A commercial system optimization tool set will be used to automate the analysis tool interactions, reducing the time required to achieve an acceptable solution. The detailed analysis tool effort will demonstrate a moving mesh capability applicable to the burning grain surface, demonstrate an improved rigid body (i.e. debris) model, and develop tools to import debris characteristics into the model.

* information listed above is at the time of submission.

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