Hi guys, I'm new here in this forum. I wanted to ask you a question (idk if this can be done): since I don't seem to be able to make my plane fly, can someone help me fixing that? When I reach a certain speed the plane just begins to steer uncontrollably.
Here is the link for download: (https://www.simpleplanes.com/a/s1KfX4/SGll-K23)
P.S. I think CoM and CoL are in the right position, so I don't know what the problem is. Maybe it's too heavy?
Good luck
@Smolecolat no worries, I'm glad I could help
@Skua Thank you SO much, it works now! And don't worry, you didn't sound rude or anything. @ronyseptian17 Thank you, too!
Alright I tried it put, it has a few problems. Genuinely just trying to help here, not be horrible or anything:
Roll surfaces. Generally it's not a great idea to put roll surfaces on the vertical stabiliser because it creates a very off-centre roll force. They also go the wrong way, acting in the opposite direction from the wing roll surfaces. Usually it's best to just have yaw surfaces on the vertical stabiliser.
Roll stability. The CoL is beneath the CoM, and you have wings with anhedrals (downwards dihedra). Both of these things can work just fine, but on your plane they're responsible for the roll instability.
Centre of Thrust. It would pitch down a lot less if the CoT wasn't so far above the CoM.
Length. The plane is very short, which makes it difficult to exert any pitch authority. Don't be afraid to build a little longer!
But yeah, like I said, I just wanted to give you some pointers, I hope it was helpful
Just a bit in front CoL,not too far
Are your CoM in front of CoL?the CoM is must in front of CoL