Profile X-15

[ootay]

Hi, hope many people may be interested in this one of a kind build.
The X-15 is a prototype jet built by nasa.
Capable of mach 7 +
Im thinking of building a profile versoin of this in 6mm depron the reinforcing it with CF.
Hope if it all goes well it should be a veryyy fast, easy to build, and relatively robust.

[ootay]

My 1st thoughts are to build this at a relatively small size.
Making it with an AUW of about 250-300g.
Therefor making it easy to float around then 3-2-1 blast off :D
Ill post some pics up of the build soon ;)

[ootay]

My 6mm depron i kept handy :cool:
And the power house. a 80w 1400kv outrunner. going to be spinning a 6x5.5 prop on an 11.1v lipo.

[burkefj]

http://www.rcgroups.com/forums/showthread.php?t=792545

I did this back in December, did a first version with elevator/aileron, then a second one in the thread used only a full flying tail, very simple, weighs 12 oz with a 2100 3S pack, and flies extremely well, and very fast or very slow at high alpha. I put my plans in the push prop thread plans section if you want to see the size I built it. Just a simple xform and the full flying tail, and two servos. I used a super parkjet, but if you use you slightly smaller motor you could get by with a smaller battery. CG needs to be at the leading edge of the wing/body intersection since there is so much forward area. This is one of my favorite planes in the fleet. There is a video link in there somewhere if you want to see what it looks like in the air to motivate you in your build.

The first version used the larger ventral fin, the second one the smaller ventral fin, they did a lot of flights with either type of ventral, also the flights with the extra tanks, there are a lot of minor variations, the white or black versions to model.

I'm also running a 6x5.5 but it is a hotter motor, and even with the 39" length, and 20-21" ws, it needs absolutely no carbon fiber for stiffness, I used a rod for the tail pivots, and a small insert on the lower fin just to keep it from griding away on landings.

If you do an xform fuse, you don't need to keep it really small, I think my airframe weight was around 3-4 oz, plus 1.5 for motor, .7 for ESC, 0.7 for receiver/servos, 5oz for 2100 pack. You can use a lot of lighter components to keep the weight down, but will still need to be able to have the CG forward.



Frank

[ootay]

Air frame cut out
Not 100% scale but it will do.
Im planning on making it like an X-15 then maybe doing an exact replica later.

[ootay]

Further into the build
Lol its 12oclock at night :rolleyes:

[burkefj]

If you aren't going with a full top view fuse, then your CG will be further back on the wing. You have a pretty short tail moment and vertical stab, make sure your side area ahead of the CG isn't larger than the rearward area behind the CG.

Frank



Further into the build
Lol its 12oclock at night :rolleyes:

[ootay]

Ok thanks for the info.

[ootay]

:cool: