Trouble with stalling and climbing
Posted: March 2nd, 2020, 5:38 pm
Hi, so it my first year and my partner's first year doing wright stuff, and we definitely don't know how everything works. Our plane is a monoplane from the freedom flight kit but we're not the best at building and the wing got a little warped and the winglets and rudders are pointing in a bit. Is that a big issue?
We think our plane is stalling because at times it looks like it is about to climb with the nose pointing up but then it suddenly drops a little and just continues on that level. Our plane also has not been climbing at all after it's been launched. Our plane flies for about 9-10 seconds and it only does that much because it makes a pretty wide circle. Mainly we have been trying to change the center of gravity and wind incidence.
As for some information about the plane, it is around 22 inches in length and we have been using a .058" rubber that is around 30.9 inches. We don't have a torque meter or anything but we usually wind it so that there are around 1000 motor turns available. Our winder has a 1:15 ratio so we usually turn it around 70 times. We increased our wing incidence about .45 cm and that seems to be working well compared to some of the other ones we tried. For left turns, the freedom flight kit comes with a protractor on the tail so have put the horizontal stabilizer .5 cm from the left end of the protractor. I'm not sure how else to describe that, but let me know if it doesn't make sense. We also put a shim underneath the horizontal stabilizer with the hopes of creating an "up elevator." It has helped keep the plane from nosediving, but our plane certainly hasn't been climbing.
Does anyone have any suggestions to the above problems or really anything about our plane that seems off? Any help at all is appreciated, and let me know if you need more information!! Thanks!
We think our plane is stalling because at times it looks like it is about to climb with the nose pointing up but then it suddenly drops a little and just continues on that level. Our plane also has not been climbing at all after it's been launched. Our plane flies for about 9-10 seconds and it only does that much because it makes a pretty wide circle. Mainly we have been trying to change the center of gravity and wind incidence.
As for some information about the plane, it is around 22 inches in length and we have been using a .058" rubber that is around 30.9 inches. We don't have a torque meter or anything but we usually wind it so that there are around 1000 motor turns available. Our winder has a 1:15 ratio so we usually turn it around 70 times. We increased our wing incidence about .45 cm and that seems to be working well compared to some of the other ones we tried. For left turns, the freedom flight kit comes with a protractor on the tail so have put the horizontal stabilizer .5 cm from the left end of the protractor. I'm not sure how else to describe that, but let me know if it doesn't make sense. We also put a shim underneath the horizontal stabilizer with the hopes of creating an "up elevator." It has helped keep the plane from nosediving, but our plane certainly hasn't been climbing.
Does anyone have any suggestions to the above problems or really anything about our plane that seems off? Any help at all is appreciated, and let me know if you need more information!! Thanks!