make it good
I'm preparing my very best "Woooo!"
Barring a last-minute change in the predicted weather, our US allies at Edge Research Laboratory will on Saturday dispatch the last Low Orbit Helium Assisted Navigator (LOHAN) test payload into the stratosphere over Colorado. The mission – codenamed PRATCHETT in honour of the late Discworld author Sir Terry – is a final test …
Each canard has to have an individual servo, which is connected via pushrod: http://www.theregister.co.uk/2014/06/20/vulture_canard_woes/?page=2
The wingtip rudders could conceivably operate off of single servo, but the connections would be a nightmare. There's a single servo mounted in each wing, connected to its respective rudder by a Gold-N-Rod system.
In the real LOHAN the servoes will be much more exposed, with only a thin bit of nylon separating them from the cold (and possibly some seems to let cold air blow in). In the PRATCHETT payload the servos and batteries are mounted inside a nice insulated box, so will stay warmer because of that.
Ofcourse I hope I'm wrong, and in any case it'll provide valuable data.