Comparison of the moment of inertia between the E.A.C. and Goshawk clutch plates.
| Identifier | ExFiles\Box 74\2\ scan0366 | |
| Date | 1st February 1924 guessed | |
| RATIO OF THE MOMENT OF INERTIA OF E.A.C. & GOSHAWK(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) CLUTCH PLATES. Y4244 Y9480 E.A.C. CLUTCH PLATE. SECTION Dimensions: .20 .06 .075 .20 2.075 RAD 2.67 RAD 4.87 RAD 7.00 RAD AXIS GOSHAWK(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) CLUTCH PLATE. SECTION Dimensions: .10 .06 .10 1.25 RAD 2.05 RAD 4.05 RAD 5.3 RAD. AXIS OF ROTATION I E.A.C. / I GOSHAWK(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) = 5.6 OR - MOMENT OF INERTIA OF E.A.C. CLUTCH PLATE IS 5.6 TIMES THAT OF GOSHAWK(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) | ||
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).