scratch built FT 3D
- Thread starter suvansh
- Start date
galaxy engineer
Junior Member
Actually it looks like it may be more under powered and/or nose heavy. The tail low condition is a sign that the airplane needs to maintain a high angle of attack to produce enough lift to fly. To produce lift it either needs to fly at a high angle of attack or fly faster. If the motor cant pull it fast enough the plane will need to fly slow at a high angle. If it is nose heavy it will also need to attain a high angle of attack just to keep the nose up because of the longer ''arm'' of the CG in front of the Center of Lift.
A tail heavy airplane simply wont fly......it will just simply be unstable and try to flip flop ends as soon as the wing becomes dynamic (moves through the air) and crash......that is the sign of a tail heavy plane.
The closer the CG gets to the Center of Lift (CL) the more ''twitchy'' and sensitive the pitch control becomes but the plane will fly. As long as the CG is forward of the CL it is positively stable. When the CG is over the CL it is neutrally stable (twitchy). Any further back the CG gets then it is Negatively stable and is pretty much impossible to fly.
It is said that a nose heavy plane flys terribly and a tail heavy plane flys once!
Great looking plane BTW. I really like the way it looks! Keep us posted!
galaxy engineer
Junior Member
Cool then! It looks great and I stand corrected........power is not a problem it seems!......lol. Do you have to hold a lot of ''up'' elevator or a lot of up trim to fly at half throttle?
rcspaceflight
creator of virtual planes
suvansh, I also commented on your video help thread and now watching these videos, I'm guessing that you used a hat cam for the first video. I had that problem too of not always getting the plane. I find it almost better to have the camera on a hat aiming too high. It's hard to actually know how the camera on a hat is aiming. It's a lot of trial and error to figure out the best angle. But it's better to go a little high since you should be flying high.
But the plane looks great. Always a great idea to test a new plane out with minimum throttle and flying a basic pattern.
But the plane looks great. Always a great idea to test a new plane out with minimum throttle and flying a basic pattern.
Ahh it's a delta! It's probably fine. I thought it was an FT3D(I was in a hurry and hadn't been able to watch the video). Flat plate delta's always seem to need a high angle of attack unless it's screaming through the air. Mine always does anyway. Keep it up!
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It might help by posting what motor, battery, and ESC you have. If you are running **Volts and say a 1200mAh battery, you could go with a higher mAh battery... say an 1800mAh one. It will be a heavier battery and might be enough to make the difference. If I'm wrong on this guys PLEASE correct me! This is what I've come to understand so far.
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