1,492
edits
(→How secret was the Norden bombsight? Was the secrecy effective?: Add & Change References) |
(→What is the benefit of reduction gearing?: Add Reference) |
||
Line 146: | Line 146: | ||
To quote an advertisement by Pratt & Whitney: | To quote an advertisement by Pratt & Whitney: | ||
The employment of a reduction gear secures better propeller efficiency by reducing the speed of the propeller. Further, on air transport ships the practise [sic] adds to passenger comfort by reducing propeller noise. | The employment of a reduction gear secures better propeller efficiency by reducing the speed of the propeller. Further, on air transport ships the practise [sic] adds to passenger comfort by reducing propeller noise.<ref>{{cite magazine |date=November 1930 |title=Reduction Gear Drive for Slower Propeller Speeds |url=http://archive.org/details/aerodigest1719unse/page/n397 |magazine=Aero Digest |access-date=14 March 2022}}</ref> | ||
=== What is the difference between a rotary and radial engine? === | === What is the difference between a rotary and radial engine? === |