Not ALL single engine airplanes meet the spin requirements for certification. The Cirrus doesn’t meet it, but rather has an equivalent level of safety with the stupid parachute.
Something to consider with regard to spins, it isn’t only being within the CG envelope that is important, but where the mass is located. Using a ballast weight on the tail post will have a greater negative impact on spin recovery than using a larger weight farther forward to achieve the same CG location. Any weight at the extreme location will have a greater centrifugal force reducing the ability to stop rotation.
Everything is a compromise. Having the CG farther aft is more efficient, makes getting the tail down easier for landing. But it reduces your spin margins, and reduces stabilizing on the ground (tailwheel airplanes). Pick your poison!
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Something to consider with regard to spins, it isn’t only being within the CG envelope that is important, but where the mass is located. Using a ballast weight on the tail post will have a greater negative impact on spin recovery than using a larger weight farther forward to achieve the same CG location. Any weight at the extreme location will have a greater centrifugal force reducing the ability to stop rotation.
Everything is a compromise. Having the CG farther aft is more efficient, makes getting the tail down easier for landing. But it reduces your spin margins, and reduces stabilizing on the ground (tailwheel airplanes). Pick your poison!
Sent from my iPad using Tapatalk