Here are plans for a profile F-22 Raptor with a simple form of thrust vectoring by having the elevons in the prop wash from a mid-mounted motor. It's intended to be built with 6 mm depron.



Wingspan: 72.1 cm (28.4 in)
Length: 99.9 cm (39.3 in)

Suggested motor: 2200 RPM/V
Suggested propeller: APC-E 6x4
Suggested battery: 3s 2200 mAh
Suggested servos: 2 x HS-55

The design follows the outline of the attached three-view images, except for the elevons, which have been slightly widened. The elevons have also been extended forward to increase the thrust vectoring effect.

The plans can be downloaded from http://rc.tomhe.net/f-22.

The tiled plans should be printed centered at 100 %.

UPDATE: This plane is now also available as a kit from 6mmFlyRC.

UPDATE: A detailed build instruction manual is available for download from 6mmFlyRC.

UPDATE: This plane can now be purchased as a kit from Grayson Hobby with a power combo set (motor, ESC, and propeller).

Good idea! This is a very simple way to vector the thrust. It will be interesting to see if the effect is the same as the tilting motor method of thrust vecoting. Good luck!!

I like your design approach,the inlets look great, I might just give this one a try,looks like fun
Thanks for posting them.

Nice !! Think I'll try it also...

I try to make one at 2.25 times the size of your A4 print using the micro UH outrunner with 2000KV. http://www.unitedhobbies.com/UNITEDH...idProduct=5358

Originally Posted by MartinL

I try to make one at 2.25 times the size of your A4 print using the micro UH outrunner with 2000KV. http://www.unitedhobbies.com/UNITEDH...idProduct=5358

Wow! That should be very interesting to see. Be sure to post your progress here.

Do u hook up the rudder?? or just use elevons..I hope to get away with 2x 3.7 gms servos

Originally Posted by MartinL

Do u hook up the rudder?? or just use elevons..I hope to get away with 2x 3.7 gms servos

I plan to begin with just elevons. It's usually enough. You can always add rudder later on if need be.

In case the elevon surfaces are not big enough I'll just cut out ailerons and couple them to the elevons Ikarus Su-27 XXL style.

Just completed the framing up..WS 36cm, to length to elevon 48cm..very small if you look at my hand as a guide..and it is going to be quick for indoor. I hope the elevon is effective on turns, otherwise the wall is going to come quick...one flight plane

I need to find a use for the high KV motor(10gms), so I thought pusher Jet could be it.

It is already a great chucky as it is now...without any nose ballast

Hey great work. I like the notch construction alot. I see this jet being highly maneuverable yet comfortable to fly.

Dave

Regarding these style jets with mid mounted motors, how much difference will there be in handling at lower speeds (harriers/landings) between the use of a high kv/small propped motor as opposed to a low kv/larger propped one? I'm assuming prop-wash over the elevons will make some difference but just not sure how much. Keep in mind, I'm not talking 3D'ing ability just basic lower speed handling.

Cheers,
golem

Biggest thing for a jet to fight at slow speeds in my experience is torque roll... So the smaller prop may give you less slow speed acceleration and air over the surfaces, buts its going to be torque rolling your plane alot less. I would say generally, overall, the small prop would win out.

My guess would be the best slow flying high alpha job would be a mid mounted motor on a delta (like a EuroFighter) with a working rudder. The rudder REALLY helps at slow speeds!

- Dave

Originally Posted by MartinL

Just completed the framing up.

Wow, Martin! You are a quick builder.

Originally Posted by MartinL

Just completed the framing up..WS 36cm, to length to elevon 48cm..very small if you look at my hand as a guide..and it is going to be quick for indoor. I hope the elevon is effective on turns, otherwise the wall is going to come quick...one flight plane

I need to find a use for the high KV motor(10gms), so I thought pusher Jet could be it.

It is already a great chucky as it is now...without any nose ballast

Hey there MartinL! Nice quick build. I was looking at the same 10g BL motor at United Hobbies and wondering how is its performance. Which ESC did you use for that tiny motor? What is your expected AUW?

I hope you could post a video of your mini Raptor flight soon so that I could have a first hand look at its performance.

Thanks!
hklam

Originally Posted by golem

how much difference will there be in handling at lower speeds (harriers/landings) between the use of a high kv/small propped motor as opposed to a low kv/larger propped one?

I agree with Dave that the torque roll effect with slow propellers is the biggest problem. My planes fly much better at slow speeds with smaller and faster propellers.

As for the need for rudders at slow speed: I'm hoping that constant air from the propeller over the vectoring inlets of the elevons, present even at slow speeds, will lessen the need for rudders. It shall be very interesting to see how well they work.