Simulated Transient Evolutionary Plume Signature (STEPS)

Award Information
Agency: Department of Defense
Branch: Missile Defense Agency
Contract: W9113M-07-C-0158
Agency Tracking Number: 053-0726
Amount: $1,250,000.00
Phase: Phase II
Program: SBIR
Awards Year: 2007
Solicitation Year: 2005
Solicitation Topic Code: MDA05-046
Solicitation Number: 2005.3
Small Business Information
655 Deep Valley Drive, Suite 335, Rolling Hills Estate, CA, 90274
DUNS: 625432679
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 G. Newton Freeman
 Principal Scientist
 (310) 541-1933
Business Contact
 G. Newton Freeman
Title: President
Phone: (310) 541-1933
Research Institution
Nonsteady plume signatures can result from transient engine operating conditions (e.g., start-up, shut-down) or evolutionary vehicle flight conditions (acceleration, ascent). Current standard plume signature codes assume constant engine/flight conditions as for a steady engine burn in a ground static test. An advanced simulation capability is proposed that enables time-continuous multi-scale nonsteady plume signatures for transient/evolutionary engine/flight conditions throughout and beyond the boost phase. The nonsteady simulation tool incorporates rigorous first-principles physical models and efficient stable numerical methods adopted from an existing steady-state simulation tool. The simulation uses a natural coordinate grid that is coupled to the flow and determined simultaneously; the flow and grid to evolve together in space and time from chamber-to-trail and ground-to-space. The extension to nonsteady flows enables enhanced physical realism in time-accurate computations to support improved fidelity and speed in real-time dynamic engagement simulations.

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

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