Author Topic: Lockheed U2r PSS (Read 46041 times)

joe · « **Reply #30 on:** September 21, 2006, 20:44:00 PM »

Thanks David.I'm sure you'll see it at the next outting.Thanks to you too Fred.For the launchs and and the help with the CoG.
Pretty happy with the U2.It's and first plane i've built from a plan,the first fiberglass work i've done,the first foam wings i've cut.Lots of firsts really! It doesn't fly too badly and it looks ok too.So all in all a good introduction to building and to PSS.
Initially the U2 was way too tail heavy making the first two flights very interesting.the first being an immediate loop ending in a nose straight down dart like landing.This early test proving the fuselage to be quite strong and resilient.With way more weight added to the nose she was launched again,this time unfortuneatly the battery and the weight moved on launch causeing her to stall straight away.With the everything fixed securely in place it was time for launch number three.This time thankfully she sailed gently away from the slope.
After two flights i can say she flys pretty well.As Fred said earlier she doesn't need a gale to get going and can glide around gently in fairly light lift.As expected I'm using a lot of aileron differential and rudder mixed with aileron to get smooth turns at the moment.Will take a few flight to get her dialed in.Will have a little thinker with the incidences and probably lose a bit of the lead from the nose as it is a bit nose heavy still i think.
Just need to finish the paint job and add some trim lines and a NASA here and there and shes done.
There is a huge amount of satisfaction to be gained form starting with a basic plan and ending up with a model that flys pretty well.I've got the building bug it seems.Can't wait to start the next one!
:lol: :lol: :lol: :lol: :lol: :lol: :lol:

Alan_Perse · « **Reply #31 on:** October 10, 2006, 09:53:06 AM »

Looks great Joe. Just watched the video. It looks like it flies very well. Great job.

joe · « **Reply #32 on:** October 16, 2006, 16:32:10 PM »

Nearly There! Just a few more details.The NASA and the registration numbers and yes Fred a pilot!! :lol: :lol:

Fred · « **Reply #33 on:** October 16, 2006, 17:01:27 PM »

Very nice Joe !
Start to really look the part !

And yes, you need a pilot... Otherwise, this thing can't fly ! :lol:

Fred

joe · « **Reply #34 on:** October 19, 2006, 15:38:32 PM »

That's pretty much it then!

Just need some decent weather to fly the thing now! :roll:

Fred · « **Reply #35 on:** October 20, 2006, 07:48:09 AM »

Nice one Joe !

That's is a very good looking plane / glider !

Fred

Fred · « **Reply #36 on:** November 06, 2006, 08:47:22 AM »

Hey Joe,
Look what I've found :

Fred

joe · « **Reply #37 on:** November 06, 2006, 11:41:58 AM »

Yep! thats the one alright!.I'll have to do a bit of measuring today and get you to print me one.Well two actually! and maybe a couple of numbers aswell.Cool

Fred · « **Reply #38 on:** November 06, 2006, 11:49:49 AM »

No problemo Joe !

Fred

joe · « **Reply #39 on:** January 27, 2010, 17:09:12 PM »

So three and bit years after it was finished I've decided to return to the U2. It was my first scratch build and it left a lot to be desired. The fuse is not too bad but the wings and stab aren't very good. I messed up on the wing joiner big time which changed the planform and gave it a slight anhedral as well. It flew OK but that's all. Needed constant flying as it wanted to tighten into turns. That'll be the anhedral I'd imagine.

So it now has two new wing cores with joiner fitted. Correctly this time, I think. I went for a RG14 second time for a faster low drag wing. It has plenty of wing area so should still go well in medium lift. I hope?

New stabs cut and and skinned. Used my vacuum pump for the skinning. Makes a big difference and with some fibreglass you can get a nice strong, straight and thin trailing edge.

Anyway, here's some photos.

billscottni · « **Reply #40 on:** January 27, 2010, 17:15:49 PM »

Nice Joe,
Can't beat the vac bag for getting skins on securely

JohnPearson · « **Reply #41 on:** January 27, 2010, 23:46:11 PM »

Hi Joe

I love the U2 spy plane, those wings are sweeeet, well done, another PSS for the slope in 2010, it's going to be an interesting year guys, keep the scale planes coming!!

joe · « **Reply #42 on:** May 13, 2010, 18:09:03 PM »

Got a bit more work done on the U2 replacement wings. Could of done a few things better. Will know next time. We live and learn. Not bad though for first vacuumed wings.

Servo bays cut and wire in place. I did it the lazy way.

Skins cut to size.

The the wing sandwich.

Glass cut and ready.

All wetted out.

Out of the vac bag.

After a bit sanding.

Leading edges glued and sanded. Ailerons and flaps cut free. Live hinges using peel ply. We see how they last.

billscottni · « **Reply #43 on:** May 13, 2010, 18:21:11 PM »

Nice Joe :clap: :clap:

Ready for next weekend? :?:

joe · « **Reply #44 on:** May 13, 2010, 18:31:44 PM »

Unfortunately will miss next meeting Bill. Got to do some work. If it wasn't for that of course it would be ready!! :wink: :wink:

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Author Topic: Lockheed U2r PSS (Read 46041 times)