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).
Technical design suggestions for the P.V. Engine and other experimental work.
| Identifier | ExFiles\Box 179b\1\ img271 | |
| Date | 21th January 1933 | |
| RG.{Mr Rowledge} FROM R.{Sir Henry Royce} C. to Sir. W. P. HC. R1/M17.1.33. Sent off 21.1.33. x-917.b. AERO ENGINES - YOUR VISIT TO W.W. 3. 1. 33. I am sorry I was not in better form for discussing this work during your visit. (1) P. V.{VIENNA} ENGINE. A point touched upon was the reduction gear, and I have since concluded that we ought to take very little notice of information received from outside unless we thoroughly agree with it. This refers especially to deleting some of the bearings in the epicyclic pattern. (2) I have suggested that this gear - to be successful - will have to be much larger in dia. This will materially reduce the stresses, and I cannot see any disadvantage. (3) About some of the epicyclic parts (weaknesses and possibilities) we can refer to our old Eagle gears, and to RG{Mr Rowledge}'s 2 speed modifications to the same. (4) Almost certainly the whole gear should float on the propeller shaft, or at least all but the stationary annulus, and I should prefer even this to do so, perhaps being anchored by some form of Bibby equalising and elastic anchorage. (5) The downdraught carburetter suggested by RG{Mr Rowledge}, seemed very convenient and good for this type, and from superficial observations would seem quite possible. (6) I should have preferred to adopt the double eye blower as used on the 'R' engines because it is fundamentally so much stronger, and might be worth the extra space asked for, especially if the blower were located a little lower. (7) I do not like the driving shaft for some of the accessories passing through the diffuser, and should continue to struggle until we find an arrangement to avoid this. Generally, there are a few things in connection with this new experimental work that I particularly wish for. (A) The first is the entire removal of the distortion caused by the liner flange from the crankchamber. This should come about in the case of the Kestrel by the 2 piece block, and in the case of (1) | ||