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).
Test report comparing the hydraulic resistance of 'Superflexit' tubing against copper tubes.
| Identifier | ExFiles\Box 88\5\ scan0210 | |
| Date | 31th July 1929 | |
| TO ACCOMPANY R.A.E. REPORT N⁰. E.2861. FIG. 4 16 M/M SUPERFLEXIT & 9/16" COPPER TUBES VELOCITY THRO' MAIN PORTION OF PIPE. FT/SEC. 2 3 4 5 9/16 BORE COPPER. HEAD. FT. .25 .65 1.16 1.8 16 M/M SUPERFLEXIT. WITH TWO ENDS. HEAD. FT. 1.25 2.5 4.3 6.8 9/16 BORE COPPER WITH TWO SUPERFLEXIT ENDS. HEAD. FT. .2 .6 1.16 1.96 % EXTRA HEAD WITH SUPERFLEXIT OVER 9/16" BORE COPPER. 400% 285% 370% 278% % EXTRA HEAD DUE TO SUPERFLEXIT ENDS FITTED TO 9/16" BORE COPPER PIPE. -20% -7.7% 0 +8.9% 24 M/M SUPERFLEXIT & 24 M/M COPPER TUBES. VELOCITY THRO' MAIN PORTION OF PIPE FT/SEC 2 3 4 5 24 M/M BORE COPPER HEAD. FT .08" .3 .7 1.2 24 M/M SUPERFLEXIT WITH TWO ENDS. HEAD. FT. .28 .95 1.9 3.12 24 M/M COPPER BUT FITTED WITH TWO SUPERFLEXIT ENDS. HEAD. FT. .12 .5 .93 1.53 % EXTRA HEAD WITH SUPERFLEXIT OVER 24 M/M COPPER TUBE. 250% 217% 172% 160% % EXTRA HEAD DUE TO SUPERFLEXIT ENDS FITTED TO 24 M/M COPPER TUBE. 50% 66.6% 32.9% 27.5% HYDRAULIC RESISTANCE. ALL DIMENSIONS GIVEN ARE BORES. THE LENGTHS OF THE TUBES WERE IN ALL CASES 6 FEET, AND THE TESTING FLUID WAS WATER. ISSUED BY DRAWING OFFICE DIRECTORATE OF TECHNICAL DEVELOPMENT AIR MINISTRY TITLE: 'SUPERFLEXIT' TUBING TESTS. ISSUE N⁰: 1 ALTS N⁰: DRAWN: C.G. TRACED: M.M.M 31-7-29. CHECKED: C.G. APPROVED: G.E.P pp. W.L.G. SKETCH N⁰ E.2932. | ||