Nonlinear Aerodynamic and Nonlinear Structures Interations (NANSI) Methodology for Ballute/Inflatable Aeroelasticity in Hypersonic Atmospheric Entry

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NNX09CB19C
Agency Tracking Number: 074673
Amount: $599,945.00
Phase: Phase II
Program: SBIR
Awards Year: 2009
Solicitation Year: 2007
Solicitation Topic Code: A2.04
Solicitation Number: N/A
Small Business Information
9489 E. Ironwood Square Drive, Scottsdale, AZ, 85258-4578
DUNS: 182103291
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: Y
Principal Investigator
 Ping-Chih Chen
 Principal Investigator
 (480) 945-9988
Business Contact
 Jennifer Scherr
Title: Business Official
Phone: (480) 945-9988
Research Institution
ZONA proposes a phase II effort to fully develop a comprehensive methodology for aeroelastic predictions of the nonlinear aerodynamic/aerothermodynamic - structure interaction (NANSI) on ballutes during hypersonic atmospheric entry, including potential surface wrinkling. A time-accurate Boltzmann aerodynamic flow solver, called BGKX, will first be extended to 3D geometries for inviscid /viscous hypersonic flows. BGKX is a robust, unified-Mach-number, all-altitude, viscous flow solver; it provides pressure and heat flux solutions in one step. To handle the complex geometry of wrinkling ballutes, an advanced cartesian grid system, called gridless boundary condition cartesian (GBCC), will be implemented within BGKX. Next, generalized reduced order models (ROM) of the BGKX aerodynamics and nonlinear structures will be established to handle ballute wrinkling and the complex flow. In addition to Direct physical coupling of the aerodynamics and structures, an aerodynamic ROM - structures ROM coupling procedure will be fully developed for efficient aeroelastic applications to wrinkled ballutes. Lastly, we will evaluate the sensitivity of the ballute aeroelastic behavior in specific structural features: the pre-tensioning of the ballute, its inflation, and the existence of structural properties variations around its circumference. ZONA will work closely with the NASA monitor in phase II should an additional ballute configuration be considered.

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

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