Test flight gone bad - RCCanada - Canada Radio Controlled Hobby Forum
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Old 11-04-2012, 03:31 PM   #1
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Unhappy Test flight gone bad

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Hello everyone

Just got back from the flying field. Thought it was a good day to try my new plane, a luscomb. It was dead calm on the ground, would not move a surveyers tape on a stick. It was a easy take off, just like my champ. Got it to tree top high, 6m, nice and smooth just a slight pull to the left. Was waiting for more altitude before I try to set the trim. Got a few metres higher and trouble started. There was wind up there above the tree tops, not moving the trees but it was there and it was dirty. The poor plane started bouncing about from the wind turbulance. It was all I could do to keep it under control. Finely got it stable on a downwind run so I could do a quick landing and save the plane. As soon as I turned back upwind it got it by a hard down draft that pionted it into the ground. As I was coming in for a landing I had no altitude and could not pull up in time. And so ends the first and last flight of the plane. A direct nose first into the ground.

The fuselage is a write off. It was a fibre glass and epoxy fuse. She smashed the nose right in on her. Making a hole the size of the motor and you can see spits down both sides and the joining line of the two halves. All the internal parts are nocked off and in the nose of the plane.

To my shock the wings and tail assembly did not get hurt. So I am wondering if it is possible to make a new balsa fuse for it and use the wing and parts? If I make a fuse like the stick, square box with taper, do you think it will work?

Thanks for the help.

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Old 11-04-2012, 03:52 PM   #2
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Re: Test flight gone bad

I would think it should work as long you get your CG correct.
It's a bummer when that happens, I lost a Radian that way.
Good luck
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Old 11-04-2012, 04:21 PM   #3
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Re: Test flight gone bad

If it was me, I would probably be grabbing some fiberglass cloth and a bottle of CA thin glue
and doing a repair job. Some sanding and body filler and maybe a pint job
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Old 11-04-2012, 08:26 PM   #4
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Re: Test flight gone bad

The damage it too bad to repair. With the big hole in the front you would have to get your hand in to the nose to glass it back shut. I don't know about you, but I do not have kid size hands that will fit in it. Had a hard enough time getting the motor in. From all the splits in it, you would have to glass the entire inside of the nose to fix it and still have to remount the servos. I think I will go with a new fuse. Just have to give it a quick draw and biuld.

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Old 11-04-2012, 08:50 PM   #5
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Re: Test flight gone bad

Why not? Just draw up a simple structure with the same basic proportions, balance it as per the plans and it should fly just fine. I would also try to figure out and correct the problem in terms of why a bit of wind affected this plane. Unless you only fly indoors you have to be prepared for dealing with the wind. Are you flying on your own or with a MAAC club? Get someone to buddy box you on windy days until you feel comfortable. When I teach I find that students have a unecessary fear of wind. But if you want to fly in Alberta you better learn to fly in the wind!

BTW what you described could also be a classic case of a stall on the down wind turn. You need to keep the speed up as you go down wind and as you make you turn onto base and then final. The downwind run in a heavy breeze can fool you because the plane seems to be going real fast so a common mistake is to throttle back too much in an effort to slow it down. Then as you make your turn back towards the runway your actual airspeed is too slow with predictable bad outcomes...

Sucks to lose a plane! Hope you can get it back in the air soon!
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Old 11-05-2012, 04:54 PM   #6
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Re: Test flight gone bad

Jeff, if you have maac I have a field west of leduc on hiway 623. Me or the boys are always happy to help out a fellow rc'er wanting to maiden a plane. Our club is not so busy so we always only let one bird in the air for a first flight anyway.

Sorry about your plane fuse . fix it and fly it again
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