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).
Proposal by Mr. Royce for damping the Hawk-Northcliffe & Seagull power unit using flexible arms and friction discs.
| Identifier | WestWitteringFiles\J\January1923\ Scan53 | |
| Date | 9th January 1923 | |
| R.R. 285A (100 T) (S.H. 159, 11-8-20) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2800 TO HS.{Lord Ernest Hives - Chair} FROM E.{Mr Elliott - Chief Engineer} c.c. to CJ. BY.{R.W. Bailey - Chief Engineer} EP.{G. Eric Platford - Chief Quality Engineer} ORIGINAL E1/M9.1.23. RE. HAWK-NORTHCLIFFE & SEAGULL. X 3408 / X 9770 Referring to the experiment for damping the Hawk- Northcliffe power unit Mr. Royce thinks this should be carried out by securing two stiff plates to the frame, one each side, and reaching out to these from the engine with two flexible arms on each side. These flexible arms are clamped on to the frame plates with 3" dia. discs of ferodo or other friction material sandwiched in between. The arms from the engine it should be understood are only flexible laterally and torsion- ally along their own axis. Around the axis of the engine they should be very stiff indeed and incapable of deflection. The clamping for the friction should be done by a central bolt in a clearance hole with suitable spring pressure. It will be seen with this arrangement that the damping will take place in whatever direction the power unit shivers. E.{Mr Elliott - Chief Engineer} (Signature) (Stamp: REC'D 30 JAN 1923) | ||