Dave
Why were you exploring spins without a well thought out and
installed spin chute? This puts the aircraft and especially you
gravely at risk. I have done thousands of stalls in both homebuilt and
manufactured aircraft (including many experimental spins in single
engine and 219 experimental spins in multiengine aircraft for a
manufacturer) and they should be approached very carefully. Recovery
should be initiated at the first sign of the stall. Under part 25
(light <12,500 aircraft are certificated under part 23) the stall is
identified by loss of control on any axis (roll, yaw, or pitch). The
stalls, except for the power on stall requirement under part 23, in the
Lancair 320/360 or LIVP/IV can be made to be very satisfactory. A good
stall is a combination of good physics and aerodynamics. If both are
correct the result is satisfactory. Much more complicated physics and
aerodynamics are involved in a spin. If the stall is good it does not
follow that the spin will be good and recoverable.
I feel that it is very foolhardy to approach unknowns without
proper precautions, your approach to the control surfaces and ground
prep was good. Why than did you risk the airplane and your life? I have
investigated many accidents for the manufacturer and others and
unknowns should be approached very carefully. I thought your family was
very attractive and although I am not trying to flame you, I recommend
care and some thoughts about them. Some aviator said that the J-3 was
so easy to fly and safe that it would only just barely kill you. Our
airplanes are not cubs.
Jack Webb
L 360, L IV
ATP, CFI Airplanes & Instruments, Multi,
& Sea
Many Type Ratings
Experienced Experimental Test Pilot both multi and single engine
Former Chief Engineering Test Pilot for a Major Manufacturer
AeroSpace Engineer BSAE
Ohio
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