Art Field
Powered flying control systems in the 50s were a challenge. We TPs at BD investigated limitations. Cannot recall shutting down the feel units on the Vulcan Mk 1. Perhaps not possible. The eight control power units could be selected off individually but it would have been a wrestle to have more than two shut down at one time. The cross controlling necessary with two adjacent elevator/aileron segments inoperative was rather confusing and perhaps useable for a landing with a little practice but there may not have been enough elevator power from only two segments to flare for a landing.
The Valiant in manual was similar to losing power steering in a car. Ailerons were almost impossible above 250 kts IAS. Landings a big struggle. With feel units disconnected the nose down mass of the control columns if let loose would have taken the wings off - a terrifying experience.
Didn't have the opportunity to find the limitations of the Victor systems.
The Comet 2C could be handled gently with two of its triplicated power units shut down and the remaining system using hydraulics only from a windmilling engine. Make too big a demand and the particular control would temporarily lock up so one would be ready to re-engage one of the other systems in a hurry.
Last edited by Milt; 23rd Aug 2008 at 23:48.