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).
Diagram and mathematical analysis of a Delco testing rig.
Identifier | ExFiles\Box 152\1\ scan0097 | |
Date | 25th January 1933 guessed | |
Delco Testing Rig XP32 K=ratio of arms Movement of slide resisted by oil pressure slide Balancing Springs Vel. ω r Variable speed motor Adjustable crank disc Displacement of crank from mid point = r cos ωt Velocity of end of arm = rω sin ωt " " piston = Krω sin ωt ∴ x²/r² + y²/(K²r²ω²) = 1 Curve is an ellipse = x on diagram = y on diagram if pressure varies as piston velocity Piston velocity curves at various frequencies 90° 60° 30° mid 30° 60° 90° | ||