USA flag logo/image

An Official Website of the United States Government

Nonlinear Aerodynamic and Nonlinear Structures Interations (NANSI) Methodology…

Award Information

National Aeronautics and Space Administration
Award ID:
Program Year/Program:
2009 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
ZONA Technology, Inc.
9489 E. Ironwood Square Drive Scottsdale, AZ 85258-4578
View profile »
Woman-Owned: No
Minority-Owned: Yes
HUBZone-Owned: No
Phase 2
Fiscal Year: 2009
Title: Nonlinear Aerodynamic and Nonlinear Structures Interations (NANSI) Methodology for Ballute/Inflatable Aeroelasticity in Hypersonic Atmospheric Entry
Agency: NASA
Contract: NNX09CB19C
Award Amount: $599,945.00


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.

Principal Investigator:

Danny D. Liu
Principal Investigator

Business Contact:

Jennifer Scherr
Business Official
Small Business Information at Submission:

Zona Technology, Inc.
9489 E. Ironwood Square Drive Scottsdale, AZ 85258

EIN/Tax ID: 860540628
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No