In 1945, preliminary design began on Allison's first turboprop engines. One was the T40 (Allison Model 500), which consisted of two T38 power sections driving co-axial contrarotating propellers ...
Rolls-Royce Corp. and the Timken Co. have announced an alliance designed to increase Timken's technology and service capabilities for Allison Model 250 helicopter turboshaft engine parts and component ...
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