Multidisciplinary Design Under Uncertainty for Entry Vehicles

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NNA06AA05C
Agency Tracking Number: 040089
Amount: $599,461.00
Phase: Phase II
Program: SBIR
Awards Year: 2006
Solicitation Year: 2004
Solicitation Topic Code: X8.02
Solicitation Number: N/A
Small Business Information
3916 Trade Center Drive, Ann Arbor, MI, 48108-0000
DUNS: 134722656
HUBZone Owned: N
Woman Owned: Y
Socially and Economically Disadvantaged: N
Principal Investigator
 Nick Vlahopoulos
 Principal Investigator
 (734) 358-0792
Business Contact
 Christina Vlahopoulos
Title: President
Phone: (734) 358-0777
Research Institution
The physical difficulty of designing entry vehicles originates from the large degree of coupling between the various disciplines involved in the design. Every subsystem design decision has far reaching consequences that must be evaluated in a multidisciplinary fashion in order to assess the impact on the weight and the performance of the entire vehicle. The disciplines which must be accounted and integrated during the design are: trajectory optimization, guidance, navigation, and control (GN&C) technology, aerodynamics and aerothermodynamics, thermal-structural analysis, and thermal protection system (TPS) development. Previous efforts in developing a collaborative or a multidisciplinary optimization process never considered how uncertainty in the atmospheric conditions, in the entry parameters of the vehicle, in the condition of the vehicle during entry, and in the performance of the TPS will influence the design and provide a risk assessment for a mission. The work completed during the Phase I effort demonstrated that it is feasible to develop a tool for multidisciplinary optimization under uncertainty (MDO-U) for entry vehicle design, and the new information which is gained is insightful and meaningful. The functionality and the value of the new MDO-U design tool were demonstrated through a case study where MDO-U was performed for the HL-20 vehicle under a LEO consideration. During Phase II a general purpose and user friendly MDO-U product which can be used in entry vehicle design, and in many other engineering areas will be developed.

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

Agency Micro-sites

SBA logo
Department of Agriculture logo
Department of Commerce logo
Department of Defense logo
Department of Education logo
Department of Energy logo
Department of Health and Human Services logo
Department of Homeland Security logo
Department of Transportation logo
Environmental Protection Agency logo
National Aeronautics and Space Administration logo
National Science Foundation logo
US Flag An Official Website of the United States Government