The stall speed goes up with the square root of the load factor. i.e if your aircraft stalls at 60kt in level flight, your aircraft would stall at 1.4 times that in a 60 degree turn, which = 84 kt. the load factor at 60 degrees is 2.
I'm totally OK with that theory, it's just that I've never seen a model do axial rolls in a stall. After the first one it was in a dive going very fast and it rolled 3 more times on the way in. That said, I'll be going plenty fast, and straight, next time out! Thanks for the info. I've flown R/C for 42 years, but this one was a suprise...
I don't agree they were rolls, in a steep turn the outside wing is at a higher angle of attack than the inside wing, and will stall first, stalling away from the turn.
The aircraft enters the incipient stage of the spin. Did you apply opposite aileron to correct?
The delta wing makes aircraft stall very unstable.
no logging, it's all our best guess, but if you listen to the motor whine on the previous turn, vs the turn as the wing came over - sounds to me like the previous was an even slower turn and no stall problems. It was a maiden flight, I would suspect a mechanical linkage failure over a stall. If it were a stall, I would have expected the inside slower wing to drop, not rise.
Is is faster than your su-27? That looked like a stall to me. Before it crashed I thought there may be an issue. It was gong too slow then you made a turn... Bad combination!
The servos are HS85BB with over 40oz torque, that wasn't the issue. The plane went out of control just crusing, it was either an accelerated stall or radio/power issue.
man that is so sad. But great work! I saw the rcgroups post and that thing looks pretty sweet. My guess is maybe the servos were not strong enough to handle the load? What servos were you using?
It should hve recovered itself falling that fast, something else was going on.
boykjei 2 years ago
You stalled it in chief don't blame the gear.
The stall speed goes up with the square root of the load factor. i.e if your aircraft stalls at 60kt in level flight, your aircraft would stall at 1.4 times that in a 60 degree turn, which = 84 kt. the load factor at 60 degrees is 2.
TOOOO slow bro
mjok2004 3 years ago
I'm totally OK with that theory, it's just that I've never seen a model do axial rolls in a stall. After the first one it was in a dive going very fast and it rolled 3 more times on the way in. That said, I'll be going plenty fast, and straight, next time out! Thanks for the info. I've flown R/C for 42 years, but this one was a suprise...
RemE14MZ 3 years ago
I don't agree they were rolls, in a steep turn the outside wing is at a higher angle of attack than the inside wing, and will stall first, stalling away from the turn.
The aircraft enters the incipient stage of the spin. Did you apply opposite aileron to correct?
The delta wing makes aircraft stall very unstable.
Thanks for replying
mjok2004 3 years ago
i stalled mine in a turn and it broke the nose off and cracked the fan but jesus the fast
cod4madass 2 years ago
no logging, it's all our best guess, but if you listen to the motor whine on the previous turn, vs the turn as the wing came over - sounds to me like the previous was an even slower turn and no stall problems. It was a maiden flight, I would suspect a mechanical linkage failure over a stall. If it were a stall, I would have expected the inside slower wing to drop, not rise.
maxadventure 2 years ago
Is is faster than your su-27? That looked like a stall to me. Before it crashed I thought there may be an issue. It was gong too slow then you made a turn... Bad combination!
Keep it fast and hot is my motto!
nwjt 3 years ago
The servos are HS85BB with over 40oz torque, that wasn't the issue. The plane went out of control just crusing, it was either an accelerated stall or radio/power issue.
RemE14MZ 3 years ago
man that is so sad. But great work! I saw the rcgroups post and that thing looks pretty sweet. My guess is maybe the servos were not strong enough to handle the load? What servos were you using?
cruddneck 3 years ago