NASA SBIR 2007 Solicitation


PROPOSAL NUMBER: 07-2 A2.04-9327
SUBTOPIC TITLE: Aeroelasticity
PROPOSAL TITLE: Nonlinear Aerodynamic and Nonlinear Structures Interations (NANSI) Methodology for Ballute/Inflatable Aeroelasticity in Hypersonic Atmospheric Entry

SMALL BUSINESS CONCERN (Firm Name, Mail Address, City/State/Zip, Phone)
Zona Technology, Inc.
9489 E. Ironwood Square Drive
Scottsdale, AZ 85258 - 4578
(480) 945-9988

PRINCIPAL INVESTIGATOR/PROJECT MANAGER (Name, E-mail, Mail Address, City/State/Zip, Phone)
Danny D Liu
9489 E. Ironwood Square Drive
Scottsdale, AZ 85258 - 4578
(480) 945-9988

Expected Technology Readiness Level (TRL) upon completion of contract: 3 to 4

TECHNICAL ABSTRACT (Limit 2000 characters, approximately 200 words)
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.

POTENTIAL NASA COMMERCIAL APPLICATIONS (Limit 1500 characters, approximately 150 words)
ZONA's phase II methodology:nonlinear aerodynamics-nonlinear structures interaction (NANSI)can be used by NASA for:
- Inflatable/Ballute design for CEV, space-access/atmospheric-entry vehicles, space station designs, weather balloons,etc.
- BGKX, a unified-Mach-number, all-altitude, viscous flow solver, is a robust method for aerothermodynamic applications.
- ZONA nonlinear structural ROM (ELSTEP) for efficient handling of the nonlinear structural applications.
- Aerodynamic ROM-Structural ROM coupling procedure for efficient aeroelastic/aerothermoelastic applications.
- The NANSI software framework can house ZONA and NASA codes (Volterra, LAURA,FUN3D,CFL3D,nasa.ELSTEP) alike for above applications.
- NANSI is applicable to NASA aeroelastic projects: transonic/supersonic transports, morphing, launch vehicles, CEV, TPS, TDT activities in Langley, flight testing in Dryden , turbomechinery in Glenn, etc.

POTENTIAL NON-NASA COMMERCIAL APPLICATIONS (Limit 1500 characters, approximately 150 words)
ZONA's NANSI methodlogy can be used by DoD and private sectors for:
- Aerospace/Defence sectors: Inflatable for DoD such FASM/Navy ,HARV/Army (ISR airship), Sensorcraft/AF, OFW,Rapid
Eye, HALE of Darpa, SSC/store clearance/AF ,Morphing vehicles/AF, MAV/AF/Army etc.
- Boeing/Airbus transports and General aviation sectors: NANSI and ROM-ROM will serve as an efficient CFD-based aeroelastic tool for transport and civil/private aircraft design and analysis.

NASA's technology taxonomy has been developed by the SBIR-STTR program to disseminate awareness of proposed and awarded R/R&D in the agency. It is a listing of over 100 technologies, sorted into broad categories, of interest to NASA.

Launch and Flight Vehicle
Multifunctional/Smart Materials
Structural Modeling and Tools

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