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Modeling of Complex Endo-atmospheric Wakes

Description:

 
 

TECHNOLOGY AREA(S): Electronics, Sensors, Space Platforms

The technology within this topic is restricted under the International Traffic in Arms Regulation (ITAR), which controls the export and import of defense-related material and services. Offerors must disclose any proposed use of foreign nationals, their country of origin, and what tasks each would accomplish in the statement of work in accordance with section 5.4.c.(8) of the solicitation.

OBJECTIVE: Develop an anchored approach to modeling infrared (IR) and/or radio-frequency (RF) re-entry wakes produced by re-entry vehicles (RVs) and RV associated spent boosters and flight hardware in high dynamic pressure and angle-of-attack (HDAOA) environments.

DESCRIPTION: This topic seeks development of a set of fast running HDAOA modeling tools to enhance missile defense mission planning, develop new mathematical techniques, and improve mission definition. Desire innovations leading to improved modeling capabilities covering a broad range of re-entering objects for a wide range of velocities/altitudes/angles of attack. In addition, desire modeling tools that can be anchored by existing high fidelity approaches and/or measurements but provide sufficient computational throughput to allow for improved run-times.

PHASE I: Identify candidate methodologies that are anchored by high fidelity codes and/or measurement data. Define the expected accuracy associated with the methodologies over the specified range of objects considered and re-entry conditions (velocities/altitudes/angles-of-attack). Define the expected computational requirements associated with the methodologies. Down select a methodology that can be further developed into the desired set of re-entry wake analysis tools.

PHASE II: Design, develop, and validate a prototype tool. Determine achieved simulation accuracy of the tool over the range of re-entry conditions of interest when compared to high fidelity simulations and/or measurement data. Determine the computational requirements over the range of re-entry conditions of interest.

PHASE III DUAL USE APPLICATIONS: Integrate the developed prototype tool into current government mission planning, signature, mathematical technique development, and/or mission definition simulations. Validate the successfully integrated code(s) and determine achieved simulation accuracy over the range of re-entry conditions of interest when compared to high fidelity simulations and/or measurement data. Determine the computational requirements over the range of re-entry conditions of interest for the newly integrated simulation.

REFERENCES:

  • K.D. Kennedy, C.D. Mikkelsen, and B. J. Walker. October 2009. "Missile Base Flow: Hybrid RANS/LES Computational Fluid Dynamics Comparisons to Measurements; Part II." JANNAF 31st Exhaust Plume and Signatures Subcommittee Meeting, Dayton, OH.
  • D.E. Wolf, H.S. Pergament, M.J. Thorwart, R.D. Miles, and E.A. Sutton. June 2006. “Modeling of Plume Flowfields and High Frequency RCS for Solid and Liquid Propellant Ballistic Missiles.” 29th JANNAF Exhaust Plume Technology Subcommittee Meeting, Littleton, CO.

KEYWORDS: Endo atmospheric Wakes, modeling

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