I realised one little thing here now…

I figured when I had both rockets and a small turbofan that the turbofan inlet doors would have to be closed after mach 1 ( or just before it ).

With these inlet doors closed the intercepting Gekko could ( after climbing at enermous climb rate of of 240 m/s to 12-15 km for instance ) actually dive at over 3000 km/h vertically..not many planes can do that ???

This would save enermous amount of fuel..since there at 15 km if no foe is left plane could glide at 1/17 glideratio even 250 km.

some basics.

-have VERY simple undercarriage… or even no undercarriage at all (belly land / land in net or deploy landing parachute, or maybe have disposable “landing skis” which pop out when landing on grassy surface). save loads of weight and complexity. also simplifies your internal weapons carriage.
-no ejection seat, just jetisonable canopy and parachute for pilot. (or maybe a MB Mk19 seat?)
-no radar or other emitter for stealth purposes. Make the entire surface an RWR antenna looking for multiple frequencies, and have “360 degree” optronic system with thermal cameras for long range passive detection and targeting. data fusion…
-Share that data with all other fighters and ground assets so everyone sees the “big picture” using some laser data links or other difficult to detect data links.
-No OBOGS, or APU on board.
-Use Fly By Light controls with motor actuation (eliminate hydraulics?)
-Have hand operated canopy

not only will all these measures radically reduce the weight, complexity and price of your aircraft, it would also improve the stealthiness without too much negative consequences for “most” fights.

I have invented a mechanical landing gear system for my previous ( first ac in my blog ) concept MAX III. Practically it could be operated with a small flywheel…crankin in and out ( or lets say it comes out without cranking..but could be made to go up too without cranking too with bypass air )..someone from France was trying to “order” it from me a year ago.

No OBOGS and no APU is easy to implement.

I wonder if mechanical flight controls were possible in a jet that is only 76% of Me-109 G size ?

I think it might be hard to operate today a ( even a small stealth fighter ) plane that has no radar. You cannot operate at night time.

Also a modern jet needs a e-seat..or BRS at least.

Thanks for the input.

Most of all a PW307A sized engine if tuned for higher top speed could and would save insane amounts of fuel.

PW370 burns burns 4.5 times fuel ( 1450 kilos/hr 1812 l/hr) than a Me-109 G and 6.3 times more than a Morane Saulnier MS 406 engine. But still it burns 50 times less than a J-20 engine on full AB ( 90 000 liter/hr ).

All this fuel has to be housed inside the plane as well.

I am afraid that by the time your aircraft has acquired enough space to carry gear needed to function in combat scenario and not just be cannon or missile fodder it wil be up around fifty feet in length and thousands of pounds heavier.

As the old saying goes cannot have your cake and eat it too.

I doubt that..but I checked..F-22 is able to fit more weapons into concealed department..it has 6 x AIM-120s and 2 x AIM-9Xs..Whereas GEKKO can carry only 4 x MBDA MICA AAMs..they go Mach 4 like AIM-120 as well.

I am afraid that by the time your aircraft has acquired enough space to carry gear needed to function in combat scenario and not just be cannon or missile fodder it wil be up around fifty feet in length and thousands of pounds heavier.

As the old saying goes cannot have your cake and eat it too.

I tried to fit a real afterburning turbofan on it…and you are right..it goes unrecognizable.

I think I wait when a 26-30 kN non afterburning sized engine with enough blow is invented…like the nano bladed PAKFA/Sukhoi new engine developement etc. Then I don’t have to start playing with them rockets.

F-22 has 16% less frontal area than a J-20 !

With 25 m2 sideview F-22 is nearly 1/3 smaller in size..just 3.7 times bigger than a Gekko…they have packed F-22 well.