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).
Blueprint with calculations and diagrams for the Goshawk II engine governor mechanism.
| Identifier | ExFiles\Box 51\5\ Scan235 | |
| Date | 28th April 1922 | |
| EFC {E. Fowler Clarke - Electrical Engineer} GOSHAWK II X.4354 Top Left Section: 2250RPM. V = 1309ft per sec. = 600R (assumed) r = 1.718 Diagram labels: 43°24', IN, OUT, 30°, 16°56', .250, 113°58' 1520RPM. V=11.0 ft per sec. r^2=1.21.0 193°2'e (0.070 ft) dq line Working load on teeth dq = ... Initial do. ... Total ... Z of needle = 1.13 cue. C = Wl^3/EI W=SEI E = SEI 0.465 x 36 x 0.00000824 / 0.100 x .7156 = .735 .735 / .65 Coils = 1.13 Say 7 Coils Stress = 2 * .162 x 87 / .000227 = 80,000. Top Right Section (Table & Calculations): Columns: LeC 1432, LeC.1550 Governor weights: -2687grains, 2883grains, .0772 lbs, .083 lbs. C.F of one weight "IN": (.0772x1.718)/1130 = .0823, (.083x1.718)/1130 = .0885 lbs Couple load on Spring "IN": .234 lbs, 257 lbs C.F of one weight "OUT": (.0772x1.21)/322 = .415 lbs, (.083x1.21)/322 = .446 lbs Couple load on Spring "OUT": 4.71 lbs, 5.10 lbs Spring load. 2250 as do 1500: .257 lbs do Range -: 5.10 lbs Deflection for Initial loading: 4.843 lbs, 60 x .257 = .319", 3° 11.5' Load 2250 RPM = .1854 x 36 x ... = .235 lbs Load 1500 RPM = .465 x 36 x ... = 4.725 lbs Bottom Section: LeC. 1432 - 1550 30° x 300R / 600R = 15° RETARD 15° ADVANCE 4.725 lbs load at 1500 RPM Left Graph: TORSION SPRING E.51729 Y-axis: lbs 5 4 3 2 1 0 X-axis: 3° 2° 1° 0° DEFLECTION Label on graph line: 4.725 lbs load @ 2250 RPM Right Graph: ADVANCE CHARACTERISTIC Governor weight Movement Y-axis: ADVANCE 30° 20° 10° 0 X-axis: GOVERNOR R.P.M. 2250 2000 1500 1000 500 0 | ||