The influence of engine technology advancements on aircraft economicsA technology advancement in a new powerplant has both favorable and unfavorable effects. Increased bypass ratio and compression ratio, coupled with high turbine temperatures, improve performance but also increase engine price and maintenance cost. The factors that should be evaluated in choosing an engine for airline use are discussed. These factors are compared for two engines that might be considered for future 150 to 200 passenger airplanes: an all-new turbofan and a quiet derivative of an existing first generation turbofan. The results of the performance and cost evaluations of the example engines are reduced to common units so they can be combined.
Document ID
19740044506
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Witherspoon, J. W.
Gaffin, W. O. (United Aircraft Corp. Pratt and Whitney Aircraft Div., Middletown, Conn., United States)
Date Acquired
August 7, 2013
Publication Date
October 1, 1973
Subject Category
Propulsion Systems
Report/Patent Number
SAE PAPER 730960
Meeting Information
Meeting: National Aerospace Engineering and Manufacturing Meeting