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).
Excerpt from a review in 'FLIGHT' magazine about the 'STROBORAMA' device shown at the Paris Show.
| Identifier | ExFiles\Box 155\3\ scan0142 | |
| Date | 31th December 1936 | |
| AN ENGINEER AT THE PARIS SHOW Excerpt from Review by H.J.Pollard. Wh Ex., F.R.Ae S. "FLIGHT" 31st December 1936. Another extremely interesting exhibit was a part of the aerodynamic section shown under the auspices of the Ministere de l'Air. The section was that in which the "STROBORAMA" (L & A Seguin patents) was working in conjunction with a propeller rotating at high speed. Vortices were formed at the top of the rotating blade and trailed off down wind as indicated in figure 4, the blade being rendered visually stationary by means of the "STROBORAMA". The educational and practical value of this device should be immense. Arrested Motion By this means it becomes possible to discover the true phenomena taking place during the motion of the object to be investigated (vibrations, bouncing, distortions etc). In every case the most accurate measurements can be taken, since the object is seen in an apparently static position at any particular instant of it's travel. These observations can only be carried out in a usful manner if the pictures have a sharp outline and are absolutely steady at high velocity; the lighting must also be very powerful to ensure normal working conditions in broad daylight. The "STROBORAMA" fulfills this double purpose; its application for the measurement of vibrations and distortion of fast moving organs of machinery is almost universal, and will no doubt be of general application in industry for investigations of cam profiles, valve bouncing, valve spring vibrations, torque and bending of crankshafts and connecting rods, investigation of lubrication, carburation, vibrations of crank cases, and moving parts, and research in the injection process of heavy fuel motors. ----------------------- | ||