SBIR-STTR Award

This proposal describes the development of a stand alone wind tunnel data processing and acquisition system which when integrated into an instrumented wind tunnel model will allow data transmission and control through a pair of cables designed to fit small diameter stings and force balances. The system uses a desk top computer which can be set up prior to installation of the model in the tunnel and is used to control the testing, record data, monitor the test progress and provide near real time test results which can be compared during testing with cfd predictions. This system allows for changes in gain, scan rate and sequence of scan during testing. The small size and modular design of the model bourne processor resulting from the use of micro component technology will allow testing flexibility and accommodation in all but the smallest model. This design feature also reduces power requirements, increases reliability and results in a rugged test unit. Phase i development will provide analysis of system requirements, circuit design, packaging, bread boarding, component identification and software conceptual design. Follow on phase ii work will involve manufacturing, installation in an existing hypersonic wind tunnel model and demonstration testing.

This proposal continues the development of a stand alone wind tunnel data processing and acquisition system. Phase I designed the miniaturized solid state model mounted data acquisition and processing hardware including transmitter and control circuitry which allows the data stream to be transmitted through the support string to a desk top computer which is used to control the testing, record the data, monitor test progress, and provide new real time test results for comparison to predictions. This Ph II proposal prototypes the hardware and software required to evaluate the R&D and designs resulting from Phase I effort. The prototype system will be adapted to fit an existing hypersonic model and tested to demonstrate the soundness of the design and its readiness for use in other wind tunnel test scenarios. A major objective will be to establish and demonstrate the procedures for using the system and the reduction in required testing time and the increased test efficiency and economy.