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Residual Error for In-Flight Thrust Determination
Technical Paper
2000-01-3251
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Forces acting on the installed propulsion system are difficult to be defined and even more difficult to be evaluated. The fundamental problem of any in-flight thrust computation is that the methodology employed is always indirect, that is measurements are made of indicators of thrust.
This paper discusses the necessity of in-flight thrust determination (IFTD) and methods of thrust calculation as well as the reasons for the choice of a method.
The residual error (RERR) method is a variant of the gas-path/nozzle method, which does not require an ATF test, and can be used for turbofan engines to extrapolate sea level static (SLS) data to higher pressure ratios found during flights.
The RERR method is described and applied to data expansion and thrust calculation of turbofan engine.
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Topic
Citation
Di Fiore dos Santos, G., Lewis, R., and Barbosa, J., "Residual Error for In-Flight Thrust Determination," SAE Technical Paper 2000-01-3251, 2000, https://doi.org/10.4271/2000-01-3251.Also In
References
- In Flight Thrust Determination SAE Report AIR 1703 1985
- Guide to In-Flight Thrust Measurement of Turbojets and Fan Engines AGARDograph N. 237
- GEAE Determined In-Flight Thrust Maruscik R.G. Lewis R.J. GEAE document no. R2000 AE 167, GE Aircraft Engines March of 2000
- Propulsion System Performance and Integration Williams D.D. Cranfield University 1996
- Uncertainty of In-Flight Thrust Determination SAE Report AIR 1678 1985
- Engine/aircraft Integration aerodynamic Design, Boeing 777 and Beyond ISABE 97-7043 Berry Dennis L. 1977