Hypervelocity Aerodynamic Interaction of Ballistic Bodies

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA8651-12-C-0074
Agency Tracking Number: F103-123-1055
Amount: $749,906.00
Phase: Phase II
Program: SBIR
Awards Year: 2012
Solicitation Year: 2010
Solicitation Topic Code: AF103-123
Solicitation Number: 2010.3
Small Business Information
215 Wynn Dr., 5th Floor, Huntsville, AL, -
DUNS: 185169620
HUBZone Owned: N
Woman Owned: Y
Socially and Economically Disadvantaged: N
Principal Investigator
 Peter Liever
 Technical Fellow
 (256) 726-4800
Business Contact
 Deborah Phipps
Title: Contracts Manager
Phone: (256) 726-4884
Email: dap@cfdrc.com
Research Institution
ABSTRACT: CFDRC proposes to develop a high-fidelity simulation capability and probabilistic description for the unguided dispensing of submunition projectiles from weapons systems. The proposed technology will be based on the Loci/CHEM software framework. In the Phase I effort, a rigid body collision module for Loci/CHEM was developed and the accuracy and scalability of the proposed technology was successfully demonstrated for multiple projectiles in proximate flight at supersonic speed. The Phase II effort will focus on a) full implementation of the coupled simulation capability, b) application demonstrations for capturing dominant influence factors in the dispersion process, and c) development of a design-of-experiment methodology to deliver probabilistic projectile state definitions with reasonable computational effort. The resulting probabilistic definition of projectile spatial distribution and flight state will be employed to investigate optimal deployment strategies, and recommendations will be made for achieving even projectile distribution patterns over a target area. This Phase II effort will enable high-fidelity simulations of large number of bodies in high-speed proximate flight with optimal parallel scalability, and provide the means to reduce the complexity by introducing a probabilistic model to describe the aerodynamic interference-dominated phase. The culmination of these efforts will enable radical reduction in CPU requirements and design cycle time over existing approaches. BENEFIT: Military Application: The resulting simulation capability will enable design and evaluation of technology and concept maturation for safe dispensing and pin-point delivery of payloads. It will support integration design of submunition and ordnance ejection processes for hypersonic and lower Mach airframes. Other military applications include modeling and simulation of multiple store separation and dispensing from wing or weapon bay platforms to support store certification efforts, simulation of debris/fragments trajectories resulting from accidental explosions or planned missile intercept. Commercial Application: The predictive capabilities will benefit system design and process planning for air delivery of payloads such as humanitarian relief supplies. The methodology will help predict payload ground-impact distributions for flight regimes intended for commercial applications.

* Information listed above is at the time of submission. *

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