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).
Summary of test results on tubing, covering temperature, pressure, chemical resistance, and composition.
| Identifier | ExFiles\Box 88\5\ scan0199 | |
| Date | 1st August 1929 guessed | |
| 2. Summary E.2851 (c) Temperature - One or two spots of oil appeared through the bonding and the lining became harder, but the tube was in satisfactory condition. (d) Bursting pressures - The ends of the 24 m.m. tube leaked at 210 lb. per sq. inch but the 16 m.m. size was quite tight up to 300 lb. per sq. inch. (e) Chemical - The lining is practically unaffected by ordinary and doped fuels, but becomes embrittled by oil at temperatures from 120 to 150°C. at temperatures below 120°C. it should be satisfactory. (f) Composition - The tube consisted of brass wire, linen, cellophane, string, rubber and copper wire braiding. (g) End connections - No trouble was encountered with these during tests. The attachment of the ends was easy if the correct method was followed and care used. General The tubing should be satisfactory for use in aircraft installations for oil up to temperatures of 120°C. and for fuel lines and water connections in retractable radiators. Further developments Specimens of these two sizes of pipe are being installed in an aircraft for flight testing. ------------------------------------ | ||