Contra-rotating propellers could arrive earlier if naval investment brings more powerful engines into use sooner. The estimate still associates their arrival with engines of roughly 2,000 horsepower. Earlier investment therefore does not automatically advance every aircraft feature by the same amount.
Notable Point · 2:42:14-2:42:24
Contra-rotating propellers depend on higher engine power
Earlier engine development could advance contra-rotating propellers, with their arrival still linked to roughly 2,000 horsepower.