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).
Aerodynamics, wind tunnel testing, seaplane float tanks, and other engineering observations.
| Identifier | ExFiles\Box 179b\3\ img144 | |
| Date | 6th October 1935 | |
| -6- Aerodynamics. I saw the full scale wind tunnel which is certainly an amazing piece of work - typically American - bigger and better than any other! They were testing a machine for tail buffeting - low wing monoplane, and found this could be eliminated by fairing the wing roots into the fuselage. Northrup-Hawke machine has applied this. Also results in big reduction in drag. They had a machine for flight tests fitted all over with tappings to read the pressure distribution. A smaller wind tunnel contained an air cooled cyl. for determining cooling effects. It was found that the best heat dissipation was given with the cyl. and fins set at 45° to air stream (see fig. 7). A 30% increase in dissipation of heat was obtained. Seaplane Float Tank. The new tank is 2000 ft. long and they can get speeds of 54 m.p.h. ------- Have heard that helical oil pump gears reduce that 'oil trapping' noise. Might be worth a trial for cars. Next Report will supply details of the Prestone cooling installation in their Pursuit machines. Some S.A.E. meetings are taking place here next week - one on fuels and measurement of detonation, I understand. Have arranged to be here to attend that. Hs{Lord Ernest Hives - Chair}/A.C.L.Vesey. | ||