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).
Starter motor brake test data sheet, showing results and related formulas.
| Identifier | ExFiles\Box 64\1\ scan0273 | |
| Date | 21th April 1927 | |
| STARTER MOTOR TESTS. FORM 3. BRAKE TEST. Φ_f and Φ_g C₂ 2s = 2p Φ_f = β T_p/C where β = 10⁵ b / 1.41 ZP Φ_g = α E/N where α = (60x10⁵xb) / ZP # b/ZP = .0061 α = .366 x 10⁵ β = 432 Table Data: Headers: C., I_p, T_p/C, Φ_f, E, N, E/N, Φ_g Row 1: 20, -, -, -, 11.60, -, -, - Row 2: 30, -, -, -, 11.40, -, -, - Row 3: 40, -, -, -, 11.20, -, -, - Row 4: 50, 3.0, .060, 26, 11.00, 3400, .00323, 108(crossed out) 118 Row 5: 60, 5.0, .083, 36, 10.80, 3150, .00343, 114(crossed out) 126 Row 6: 80, 10.2, .1275, 55, 10.40, 2740, .00380, 127(crossed out) 139 Row 7: 100, 16.8, .168, 73, 10.00, 2360, .00424, 141(crossed out) 155 Row 8: 120, 23.5, .196, 85, 9.60, 2040, .00461, 154(crossed out) 169 Row 9: 140, 30.9, .221, 95, 9.20, 1780, .00516, 172(crossed out) 189 Row 10: 160, 38.1, .238, 103, 8.80, 1570, .00560, 187(crossed out) 205 Row 11: 180, 45.0, .250, 108, 8.40, 1385, .00606, 202(crossed out) 222 Row 12: 200, 52.0, .260, 112, 8.00, 1200, .00667, 222(crossed out) 244 Row 13: 220, 59.5, .2705, 117, 7.60, 1025, .00741, 247(crossed out) 271 Row 14: 240, 67.1, .2795, 120, 7.20, 845, .00852, 284(crossed out) 312 21.4.27. | ||