What is it about?
This publication describes the use of Integrated circuits that were used to get an existing but non-functional balance to meet the requirements for a wind tunnel test.
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Why is it important?
It is the first description of the use of integrated circuits (1 of 4) in wind tunnel balances. It is believed to be a possible avenue to accessing the lesser accepted sensor technologies such as, for example, tungsten-platinum gauges.
Perspectives
Although the final noise band of ICs may be slightly larger than a pure Weatstone bridge format, the amplification and thermal suppression (span and zero-shift) can be considered to be a kind of randomisation of the thermal effects (MDOE). This approach may open the door to the use of the more thermally unstable sensors such as semi-conductor gauges. This possibility is shown to be feasible here on tungsten platinum gauges. Stiffer, more linear and thermally stable balances are the ultimate goal.
Mr Peter PM Bidgood
CSIR
Read the Original
This page is a summary of: On the Application of Analogue Signal Integrated Circuits in a Refurbished Side Wall Balance, January 2015, American Institute of Aeronautics and Astronautics (AIAA),
DOI: 10.2514/6.2015-1791.
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