"Mark James Boyd" wrote in message
news:4064994c$1@darkstar...
K.P. Termaat wrote:
Yesterday evening I talked with a friend about avoiding excessive speed
when
recovering from a spin in a modern low drag glider with the somewhat
larger
span.

A lot has been written here about G loads. I recall that the
T-34 (an aerobatic power plane I have a little time in
which is sortof a tandem Beech 33) had some issues with wings
coming off during aerobatics. The recorded G loads and mauevers
indicated the aircraft wasn't flown outside of G limits.

How did the wings separate? Some smarty folks said it was
because the twisting G load that the wing could endure was
much less than the static tested load. If the ailerons were
deflected and the thing was in a steep spiral (as opposed
to straight dive) there were twisting loads.

Thought I heard that inspections showed T-34 wings were suffering from
fatigue cracks. Kind of shot down some of the 'fighter dude' thrill rides
(we have/had one in Colorado). We have a disassembled T-34 wrapped in
plastic in our hangar. I recall a conversation about the value dropping by
about 50% when the crack problem was discovered.

Frank Whiteley