Aerobatic aircraft "forbidden" to do flat spins?

because flat spin means inability recover spin due aerodynamic lock of tail controls.

negative g limitation maneuvers inverse splits , likes... instead of pulling stick push it.. result being negative g , blood flowing eyes , brain instead of legs , guts.

-0 g limitation more or less means no aerobatics.. because simple inverted flight alone poses -1g stress on aircraft construction.

aerodynamics work both ways.. imagine standard 2g turn (i.e. 60deg bank) if did 120 bank, you§ll flying same path, doing -2g, more or less belly up.


roger wannabe navy instructor indeed confuses inverted , flat spin.

inverted spin either induced or resulting in belly attitude.

flat spin belly down, "falling leaf" attitude.

difference between two? way spin recovered... in inverted spin, it's rudder against rotation pull stick instead of usual push stick... neeed nose down gain speed.

in flat spin, don't past rudder against rotation because can't stop rotation due aerodynamic lock.


in link can see "typical" spin on z-142. if remember well, first spin loss of altitude 700 ft, second 500 ft, third 300 fourth 200 ft getting sixth stabilised in flat spin, losing 200 ft per turn, spinning ground.
power in spins nothing, short of on spinning engine because yank full throttle , engine overspins before constant prop governor can engage. have never been recovering spin engine.

i went cockpit of small aircraft, so-said qualified aerobatics, limited +8/-5g.
evidence on controls, notice "flat spin prohibited".
can explain why?

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