fact-that

Updated: May 8, 2025

It was quickly realised by the Wrights, in fact-that the minimum of weight per horse-power was the prime requirement for the successful development of heavier-than-air machines, and at the same time it was equally apparent that the utmost reliability had to be obtained from the engine, while a third requisite was economy, in order to reduce the weight of petrol necessary for flight.

W. Lockwood (William Lockwood) Marsh - A History of Aeronautics