Archive for January, 2012
Got really bored this weekend so I took my spare Super Cub fuselage and converted it to an L-5 Sentinel. Just used the projector to do a quick three view in the size I wanted and then knocked out most of it in four hours.
I improved my original design to get more extension on the flap. The solution struck me as I went back to the internet to due more research. I was going to go back to try to do a hybrid of vice Fowler flap, but this version is so simple I now look at my super cub wing and think my previous attempt was over engineered. This is the real deal and so so simple. What the picture doesn't show is the cam follower of the pivot point the gives the flap its side to side rigidity. I am going to order some small flange bearing to keep the resistance low. I also abandoned using cheap servos. MG65 is a must. My FS55 just can't handle even the slightest load in the flap retracted position. Final version will be carbon skinned.
Finished repairing my Cub after a reversed trim malfunction on my part. I went down to test fly and there was a huge crowd that was there to witness an 15' A-10 Warthog filled with paint that some guy from Aero Vironmental drone made to crash into a wall. Got it all on my new #808-16 camera. I also solved my Full Fowler Flap concept. I will post later, but it true Fowler and very simple and light.
Spent some time programing the radio to get some down elevator on Flap extension. I slowed the down on the servos by 1/2 second. Finished up the leading edge slats. They are very scale looking and seem functional, but who knows how it or will it help. I used the 2 to 1 rule. Twice as much gap at the entry then the exit. Now all I need to do is test fly again.
I got in one flight with the new Super Cub/Stella wing and I have a lot of programing to due. For the wing maiden I had all the ailerons throws limited to 70%. Way too little. I should probably used the dual rates instead of the Travel limits. It did not like to roll. Set the flaps down to 20 degrees and at any throttle setting higher then zero it would bubble to the moon. I never even bothered to go to 40 degrees. It didn't help that I was flying in a very crowded field that I normally don't fly at. The Rose Bowl (my normal field) is off limits for New Years. Don't maiden with distractions. Got the plane down after 6 landing attempts. This particular field is sloped downhill and very short. I floated the strip on every attempt with the flaps at 20 degrees. last two passes no flaps and was lucky not to hit the curb at the end of the runway. Tomorrow, I spend an hour programming.