Yaw Damper Computer

Elliott
Yaw Damper Computer
Type No 6310-A-2
Ref No
Ser. No 169/68
[mods] 0
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[luggage tag]
Date assessed 30 Oct 2013
Owner VVC10 Defence IPT
SCRAP

In order to enhance the basic stability of the aircraft against dutch roll each autopilot system incorporates a yaw damper which is operative when the autopilot is engaged. In the event of failure of both dampers a third completely independent (Standby) yaw damper is available which may be engaged at any time. The Standby Damper drives the upper rudder surface under conditions where the Emergency Ram-Air Turbo-alternator (ELRAT) is operating. (The VC10 had two Ram Air Turbines RATs, one for electrical power (ELRAT) and one for hydraulics (HYRAT)) .
The Yaw Damper Computer was an Elliott design (not a Bendix licenced design) and was delivered for the very first flight of the VC-10 from Weybridge as yaw damping was deemed critical.
The Component Location label shows that this unit contained the module types: SA-541; SA-532; SA-514; 6307-A-1 & 6859.