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 ...
A classic engine duel is beginning to take shape in a category often thought extinct at the dawn of the second century of commercial aviation: the untapped market sector. Not since the late 1960s - ...
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