From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Blueprint for an alternative aircraft gun installation, possibly for a Spitfire.
| Identifier | ExFiles\Box 176\1\ img038 | |
| Date | 17th July 1940 guessed | |
| OF GUNS 63 ROUNDS OF AMMUNITION PER GUN RATE OF FIRE 660 ROUNDS PER MINUTE PER GUN MUZZLE VELOCITY 2820 FT/SEC. ALTERNATIVE GUN INSTALLATION BASED ON WEIGHT OF EXISTING 8-.303 B | ||