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).
Page of calculations regarding the moment of inertia and linear balance of a connecting rod.
| Identifier | WestWitteringFiles\M\2October1924-December1924\ Scan9 | |
| Date | 10th October 1924 | |
| EFCL/T6.10.24. -8a- Contd. through a distance b, this moment of inertia being accelerated with the actual angular acceleration of the connecting rod. This should be clear by consideration of the fact that in supplying the linear balance of these two additional masses, imagined at X and P respectively, we have virtually taken them to have a moment of inertia about G which the actual (and linearly equivalent) massive particle Mg at G does not possess. So that the couple required is over-supplied by an amount corresponding to this moment of inertia. The amount of this moment of inertia is :- (b / (a + b)) Mg. a^2 + (a / (a + b)) Mg. b^2 = a b Mg. = (a b - k^2) M.{Mr Moon / Mr Moore} (Since Mg = (a b - k^2) / (a b) M) Contd. | ||