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COVID-19 (OMB MEMO M-20-22)TOPOLOGY OPTIMIZATION OF WIND TUNNEL BALANCE AXIAL SECTION. WIND TUNNEL FORCE BALANCES HAVE BEEN USED FOR OVER A CENTURY TO HELP AERODYNAMICISTS PREDICT FORCES AND MOMENTS EXERTED ON AIRCRAFT AND THEY CONTINUE TO REMAIN THE PRIMARY FORCE MEASUREMENT DEVICES USED DURING WIND TUNNEL TESTING. FORCE BALANCES PROVIDE THE CONNECTION BETWEEN THE WIND TUNNEL MODEL AND THE STING THAT IS USED TO SUSPEND THE MODEL IN THE TUNNEL FLOW. THEREFORE, BALANCES PERFORM TWO IMPORTANT BUT COMPETING OBJECTIVES: 1) SAFELY SUPPORT THE WIND TUNNEL MODEL THROUGHOUT THE TUNNEL TEST, 2) ACCURATELY RESOLVING THE FORCES AND MOMENTS EXERTED ON THE AIRCRAFT, WHICH REQUIRES SUFFICIENT RESOLUTION AND A MATHEMATICAL MODEL. WIND TUNNEL FORCE BALANCES ARE EFFECTIVELY A COUPLING OF MANY SPRING ELEMENTS. THE SPRINGS HAVE BEEN DESIGNED FOR THE LOADS EXPECTED IN THE TEST. WHILE THERE ARE MANY APPROACHES TO MEASURING FORCE, IN THIS APPLICATION, THE SPRINGS BECOME TRANSDUCERS WITH THE APPLICATION OF STRAIN GAGES THAT PROVIDE ELECTRICAL FEEDBACK PROPORTIONAL TO THE APPLIED STRAIN EXPERIENCED BY THE STRAIN GAGE. THE PRIMARY OBJECTIVES OF THIS EFFORT ARE TO DEVELOP TOPOLOGY OPTIMIZATION CODE ATTEMPTING TO MEET THE FOUR DESIGN OPTIMIZATION OBJECTIVES AS OUTLINED IN THE STATEMENT OF WORK, AND TO DEVELOP A NOVEL APPROACH TO OPTIMIZING STRAIN GAGE PLACEMENT USING LOCAL VARIABLES WITHIN THE LARGER TRADITIONAL TOPOLOGY OPTIMIZATION GLOBAL VARIABLE OPTIMIZATION (FOR VON MISES STRESS FOR INSTANCE).
Total Committed
$0
Product or Service Description
Aeronautics/Space Technology Basic Research R&D
Contracting Agency
Effective Date
Feb. 6, 2019
Funding Department
NASA LANGLEY RESEARCH CENTER
Type
Cost plus fixed fee
Solicitation Procedure
Only one source
Extent Competed
Not competed
Reason
Follow On Contract (Far 6.302 1(A)(2)(Ii/Iii))
Recent Contract Actions 
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| Vendor | Description | Signed | Reason for Change | Amount Committed |
|---|---|---|---|---|
| NATIONAL INSTITUTE OF AEROSPACE ASSOCIATES | COVID-19 (OMB MEMO M-20-22)TOPOLOGY OPTIMIZATION OF WIND TUNNEL BALANCE AXIAL SECTION. WIND TUNNEL FORCE BALANCES HAVE BEEN USED FOR OVER A CENTURY TO HELP AERODYNAMICISTS PREDICT FORCES AND MOMENTS EXERTED ON AIRCRAFT AND THEY CONTINUE TO REMAIN THE PRIMARY FORCE MEASUREMENT DEVICES USED DURING WIND TUNNEL TESTING. FORCE BALANCES PROVIDE THE CONNECTION BETWEEN THE WIND TUNNEL MODEL AND THE STING THAT IS USED TO SUSPEND THE MODEL IN THE TUNNEL FLOW. THEREFORE, BALANCES PERFORM TWO IMPORTANT BUT COMPETING OBJECTIVES: 1) SAFELY SUPPORT THE WIND TUNNEL MODEL THROUGHOUT THE TUNNEL TEST, 2) ACCURATELY RESOLVING THE FORCES AND MOMENTS EXERTED ON THE AIRCRAFT, WHICH REQUIRES SUFFICIENT RESOLUTION AND A MATHEMATICAL MODEL. WIND TUNNEL FORCE BALANCES ARE EFFECTIVELY A COUPLING OF MANY SPRING ELEMENTS. THE SPRINGS HAVE BEEN DESIGNED FOR THE LOADS EXPECTED IN THE TEST. WHILE THERE ARE MANY APPROACHES TO MEASURING FORCE, IN THIS APPLICATION, THE SPRINGS BECOME TRANSDUCERS WITH THE APPLICATION OF STRAIN GAGES THAT PROVIDE ELECTRICAL FEEDBACK PROPORTIONAL TO THE APPLIED STRAIN EXPERIENCED BY THE STRAIN GAGE. THE PRIMARY OBJECTIVES OF THIS EFFORT ARE TO DEVELOP TOPOLOGY OPTIMIZATION CODE ATTEMPTING TO MEET THE FOUR DESIGN OPTIMIZATION OBJECTIVES AS OUTLINED IN THE STATEMENT OF WORK, AND TO DEVELOP A NOVEL APPROACH TO OPTIMIZING STRAIN GAGE PLACEMENT USING LOCAL VARIABLES WITHIN THE LARGER TRADITIONAL TOPOLOGY OPTIMIZATION GLOBAL VARIABLE OPTIMIZATION (FOR VON MISES STRESS FOR INSTANCE). | Dec. 16, 2020 | Supplemental Agreement For Work Within Scope | $0 |
About this data
This data comes from the Federal Procurement Data System, which includes all contracts worth $10,000 or more. We look at all contracts that are tagged with the procurement code for COVID-19 or otherwise started in 2020 and contain “COVID-19” in the description. Department of Defense contracting data is subject to a 90-day delay before it appears in the data.