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 analyzing the Peregrine brake system, detailing servo torque multiplication with a diagram, data table, and performance graph.
| Identifier | ExFiles\Box 1\10\ B001_X106 TO X 110-page004 | |
| Date | 8th September 1932 guessed | |
| TITLE: PEREGRINE BRAKES - RR Sch 192 REFERENCE (TOP RIGHT): Hs.{Lord Ernest Hives - Chair} 692 CALCULATION FORMULAE (LEFT SIDE): - DIRECT TO REAR: Numerator values: 1.425 x 2.0 x 2.5 x 4.8 x .325. Denominator values: 1.625, 3.875, 1.5. Result: x 12 = 220 - SERVO TO REAR: Numerator values: 13.150 x S x 3.4 x .325. Denominator values: 5.250, 1.875. Result: x 12 = .193 S - SERVO TO FRONT: Numerator values: 13.150 x S x 2 x .325. Denominator values: 5.250, 1.625. Result: x 12 = .301 S DATA TABLE: Headers: SERVO TORQUE MULTIPLICATION (REAR, FRONT) | DIRECT TO REAR | SERVO TO REAR | TOTAL TO REAR | SERVO TO FRONT | TOTAL BRAKING | % BRAKING FRONT | % BRAKING REAR Row 1: 0 | 0 | 220 | 0 | 220 | 0 | 220 | 0 | - Row 2: .5 | .6 | " | 96.5 | 316.5 | 180 | 496.5 | 36.3 | - Row 3: .75 | .9 | " | 145 | 365 | 270 | 635 | 42.5 | - Row 4: 1.0 | 1.2 | " | 193 | 413 | 360 | 773 | 46.6 | - Row 5: 2.0 | 2.4 | " | 386 | 606 | 720 | 1326 | 54.2 | - Row 6: 3.0 | 3.6 | " | 578 | 798 | 1080 | 1878 | 57.5 | - Row 7: 4.0 | 4.8 | " | 772 | 992 | 1440 | 2432 | 59.2 | - Table Footer: RELATIVE VALUES OF TORQUE MULTIPLICATION FRONT TO REAR BY EXPERIMENT GRAPH: - Y-Axis Left (BRAKE UNITS): 200, 400, 600, 800, 1000, 1200, 1400, 1600, 1800, 2000 - Y-Axis Right (% BRAKING): 10, 20, 30, 40, 50, 60, 70, 80, 90, 100 - X-Axis (SERVO MULTIPLICATION TO REAR): 1, 2, 3, 4 - Graph Lines: TOTAL BRAKING, % FRONT BRAKING, SERVO TO FRONT, TOTAL TO REAR, SERVO TO REAR DIAGRAM DIMENSIONS: 13.150, 5.250, 1.425, 1.925, 1.875, .65, 3.875, 1.625, 1.5, 2.0, 3.0, 2.5, 3.4 DIAGRAM LABELS: 12" DIA DRUM, .325 CAM, 3.5", 4.5" FOOTER: BRITISH MADE | ||