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).
Graph showing gains in speed for various aircraft when fitted with exhaust momentum manifolds.
| Identifier | ExFiles\Box 134\1\ scan0049 | |
| Date | 26th November 1937 guessed | |
| GAINS IN SPEED OF VARIOUS AIRCRAFT WHEN FITTED WITH EXHAUST MOMENTUM MANIFOLDS. (FIXED PITCH AIRSCREWS ONLY NOT CONSTANT SPEED) X X X REPRESENT RESULTS OBTAINED ON SIX AIRCRAFT TESTED COMPARED WITH EXPECTED RESULTS FROM ANALYSIS. GAIN IN SPEED DUE TO INCREASED R.P.M. AND BOOST. GAIN IN SPEED DUE TO MOMENTUM ONLY. TOP SPEED OF AIRCRAFT. M.P.H. GAIN IN SPEED M.P.H. H.K. 701 | ||