Man ! the cracking sound scares me 😀😀😀 But I would say it was perfectly controlled loop ! first loop circumference looked pretty smaller @ what' the height lost from 1-straight n level , to dive 2- from dive to pull up and back to straight n level ?
That sound is mainly the main center spar/bolt moving rubbing against the air frame when g loads increase or decrease. There is nothing cracking or failing... It is difficult to fix since all these planes have this similar system for easily removing the wings. As far as I know this is very strong. Altitude loss is energy conversion from altitude to kinetic energy = airspeed squared/g. These planes are very slippery so the altitude/airspeed changes are close to calculated. Perhaps 100 m lost to drag n these 2 maneuvers. A slower lightly loaded "grandfathers" loop loses only about 30m. A competition type higher speed and load loop loses perhaps 60m. If going close to Vne You can gain perhaps 250m by pulling up, depending on the type.
No that is not a problem unless You exceed design limitations... Every type has different limitations in maneuvers, airspeeds and g loads. This plane is approved for these maneuvers.
It is an older Polish Puchacz. They now make the Perkoz which is a successor. I do not know present sales price. Nice airplane in my oppinnion. szdallstar.com/en/products/szd-54-2-perkoz/
@@xypower8511 That is about right. There are some similar planes with small jet engines. Example minijets.org/en/100-150/pbs-tj100/super-salto-jet-tj100/ Price for a used Puchacz could be much less.
Man ! the cracking sound scares me 😀😀😀 But I would say it was perfectly controlled loop ! first loop circumference looked pretty smaller @ what' the height lost from
1-straight n level , to dive
2- from dive to pull up and back to straight n level ?
That sound is mainly the main center spar/bolt moving rubbing against the air frame when g loads increase or decrease. There is nothing cracking or failing... It is difficult to fix since all these planes have this similar system for easily removing the wings. As far as I know this is very strong. Altitude loss is energy conversion from altitude to kinetic energy = airspeed squared/g. These planes are very slippery so the altitude/airspeed changes are close to calculated.
Perhaps 100 m lost to drag n these 2 maneuvers. A slower lightly loaded "grandfathers" loop loses only about 30m. A competition type higher speed and load loop loses perhaps 60m. If going close to Vne You can gain perhaps 250m by pulling up, depending on the type.
Love it!
I know nothing about gliding, but I'm worried the wings will break off if you keep doing that.
No that is not a problem unless You exceed design limitations... Every type has different limitations in maneuvers, airspeeds and g loads. This plane is approved for these maneuvers.
wait
WHAT?
这飞机什么型号，多少钱、
It is an older Polish Puchacz. They now make the Perkoz which is a successor. I do not know present sales price. Nice airplane in my oppinnion.
szdallstar.com/en/products/szd-54-2-perkoz/
@@erikisberg3886 我了解到这是一架无动力滑翔机，我猜测10万美元应该是需要的。
@@xypower8511 That is about right. There are some similar planes with small jet engines.
Example minijets.org/en/100-150/pbs-tj100/super-salto-jet-tj100/
Price for a used Puchacz could be much less.
4.5G for a loop...