And here is a far superior autogyro undergoing anti tank trials.
It completed the trials successfully.
This is the Wallis W116 with a 90hp air cooled flat four four stroke.
It has a proven performance as follows.
Four times the range of an Apache gunship.
Far more manoeuvrable.
Faster and with almost zero heat signature.
On exercise it was brought into action from the rear of a C130 in three minutes an Apache takes three weeks.
It can operate from the deck of a 30ft patrol craft (sea trials completed)
Autonomous unpiloted version available.
Electric version with an hours operational time in development.
For the price of one Apache you can have 10,000 of these.
Easy to fly most stable non airship aircraft ever.
The two stroke engine you show has been tried both direct drive and geared in the Wallis.
High rpm two strokes do not have the thrust response of a good four stroke for this application.
Geared down the gear system jerks and in use the engine screams like a car stuck in first gear.
The four stroke engines we used were far superior in real operations (not amateur fun use).
Ken Wallis made his own wooden propellers and rotors which had an unlimited fatigue life.
The alloy prop you show is nowhere near as good and with the engine shown would be exceeding its tip speed limits at anything like full power.
