On 06/18/2010 06:30 AM, Tony Renshaw wrote:
> is there another way of achieving this same goal? I suppose in the case of a
crash it would mean that you would have voltage still coming forward
Thinking about it, and your electron aversion...
Why not connect the battery via two plugs that can be pulled apart.
Make a hatch below the battery, closed with a safety pin, connected to a
rope leading into the cockpit. No fancy electrons needed.
In an emergency, on final for your crash landing, pull the rope. The
weight of the battery will for sure pull the plugs apart on its way out.
Bye bye battery.
Advantages:
1) No fuses, no switches, no wires, no relays, no mess. No female
electrons to bug you during final on your crash landing. Just a rope and
pin. People have relied on these for ages for various of purposes. Every
mechanic understands how it works.
2) There is nothing to spark left, no relays that can switch on again
due to the forces acting upon them, no battery that might get punctured
by your elevator mass balance arm and emit a shower of sparks as a
result, your knee can't bump into the master switch and power up the
ship again during the most critical stage of the crash, everything with
sparking ability is just simply dumped overboard.
3) The aft-mounted battery won't bump into your head, it is already
gone. One thing less to worry about.
4) The reduce in weight might well be an advantage in getting the
aircraft to a stop. The lighter the aircraft is, the less mass you have
to decellerate.
Just keep it simple.
Of course you have to attach a red "for emergency use only" label to the
rope and brief your passengers not to pull on it while asking "what is
this for" when your are circling his home vilage. If you want to be
fancy you cat attach a small parachute to the battery. This has the
additional advantage that you can test the system overhead your airfield
and it won't cost you a new battery.
Frans
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