We used a fuse panel for almost everything.Starting the wiring on my 8 , going with a Fuse Panel . Should I put toggle switches as a means of disconnect( Flap and Trim)
in case of a runaway as I have no breaker to pull ? Has anyone had problems with Flaps or Trim and had to pull a breaker ?
Starting the wiring on my 8 , going with a Fuse Panel . Should I put toggle switches as a means of disconnect( Flap and Trim) in case of a runaway as I have no breaker to pull ? Has anyone had problems with Flaps or Trim and had to pull a breaker ?
Are all models of RV's controllable with full up or down pitch trim? Or will full trim one way or the other result in uncontrollable flight? I would imagine each model is different. Any documented cases of runaway trim?
Are all models of RV's controllable with full up or down pitch trim? Or will full trim one way or the other result in uncontrollable flight? I would imagine each model is different.
Any documented cases of runaway trim?
Excellent questions. I notice a strong tendency toward two builder diseases.
(1) Generalized Anxiety Disorder: Worrying about a backup for a system with a very low failure rate and a benign failure mode.
(2) Optionitis: Adding toys with a low value/complexity ratio, but high time and money cost.
Think about it. RV trim systems are typically quick. If it runs away, do you really think you'll (a) register the problem, (b) diagnose it, and (c) find the switch or breaker before it is way out of trim? Maybe a better approach would be to stop worrying, and just go fly it with the trim at the stops during Phase One.
Now think about flaps. The same human factors apply...register, diagnose, and action are unlikely to take place fast enough to make a difference. The common failure mode is motor failure; not runaway. If it does run away, so what? The airplane was within the flap envelope, or the pilot would not have been fooling with the flap system. Up is never a problem. If you were putting them down, you were going to land anyway, and an RV with flaps down will climb just fine for a go-around.
KIS is always best. Things not installed weigh nothing, cost nothing, and never cause a problem.
On top of the excellent points made by Dan and Walt, realize that some of the modern autopliots do this for you anyway, as can Vertical Power. Remember, if you design the whole airplane and all of it's systems for the "1th percentile", it'll never fly. The entirety of a flying contraption is an exercise in compromise and risk management to begin with!
Cheers,
Stein
And immediately lose your radios, transponder, TCAS, lighting, GPS and perhaps your EFIS?
KISS? Not really.
-------14 years this week,------
Celebration time