Stock Propellor single seater high altitude plane.
Usual rules apply. stage to release engine, [ or ] to switch craft to engine, ALT-E to spin prop to maximum.
Hit 1 to pitch the prop, you can switch the prop pitch to suit your flight or landing profile as required.
Will easily reach 10km altitude, and in excess of 120m/sec if required.
Keep your speed up as it’s quite easy to spin it into the ground. I’d suggest SAS the engine on landing to avoid prop strike.
Enjoy!