Thread: Discussion I can't see it!
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Old Aug 27, 2012, 10:12 AM
ShredAir is offline
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slope'n somewhere in the Andes
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Ecuador, Pichincha, Tabacundo
Joined Mar 2001
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I'll comment on it: we used sliding trays before computer radios for v-tails and flying wings. The problems were slop and possibly damaging the elevator servo on a hard landing.
Because this is an emergency system only, these problems can be eliminated. First, the tray can be built and positioned such that it can slide backward only, not forward on landing; that would prevent damaging the servo.
Second, the tray can be quite tight so as to eliminate slop, particularly in the full forward position. If the emergency servo is sufficiently powerful (it should be), a spring or rubber bands can be added helping pull the tray forward.
Modern XC planes may have the elvator servo in the tail, making this add-on difficult. Also, weight may be an issue, with some of today's XC planes barely making the 5 kg limit.

Dieter Mahlein, ShredAir
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