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 diagrams and formulas for calculating the equivalent length and stiffness of a half journal.
| Identifier | ExFiles\Box 173\3\ img189 | |
| Date | 8th May 1934 guessed | |
| Diagram labels: w, r, g2, d2, a, h, b, g1, d1 HALF JOURNAL A B EQUIVALENT LENGTH FROM A TO B = L = (2b + .8h) + (3/4)a * (d1^4 - g1^4) / (d2^4 - g2^4) + (3/2)r * (d1^4 - g1^4) / (h*w^3) STIFFNESS A TO B = CJ/L WHERE C = 12*10^6, J = (π/32)*(d1^4 - g1^4) | ||