Control apparatus for estimating operating parameter of a gas-turbine aeroengine
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United States of America Patent
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Feb 27, 2018
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app pub date -
Apr 17, 2015
filing date -
Apr 17, 2015
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Abstract
An apparatus for estimating operating parameter of a gas-turbine aeroengine is configured to calculate a rotational speed of the low-pressure turbine (N1) by retrieving preset first characteristics by at least a rotational speed of the high-pressure turbine (N2), an engine inlet temperature and a first amount of bled air, to calculate a compensating value (ΔN1) of the rotational speed of the low-pressure turbine by retrieving preset second characteristics by at least a second amount of bled air, and to calculate the rotational speed of the low-pressure turbine (N1) finally based on the calculated rotational speed of the low-pressure turbine (N1) and the compensating value (ΔN1) thereof.
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