HilldaFlyer
Well-known member
Love the photos...
Crashed the crap out of newest slender delta build with tail. A mighty mini sized power pack does not equate to good handling with a mighty mini sized airframe on this type of plane due to wing loading. I should have trusted my gut and kept the mid sized airframe of my previous tailless attempts. Oh well. I got parts. I got FB. Time for a full sized model with skinnier ailerons and a beefier elevator.
Yeah. The concept is solid though, it will just require some more work. Handling characteristics tend to get exaggerated in smaller models, not to mention the wing loading. The electronics, though modest(1900kv graupner 250 size, 3s 650mah battery) , are a bit much on the wing loading for that little plane. It was less than the length and width of a single sheet of foam for the wing and tailplane, whereas my tailless ones had a wing the entire length and width of a sheet. I need that wing length, plus the addition of a tailplane.That's to bad.
How about some up swept wing tips on the end?Yeah. The concept is solid though, it will just require some more work.
Maybe. If you mean like dihedrals I don't see any deltas using them really. Negative dihedrals, or anhedrals are used on full sized planes, but can actually make the roll axis even more sensitive. I have seen plates or wingtips swept straight up on some deltas. What configuration do you mean?How about some up swept wing tips on the end?
What happened, nose plant or just no roll control?Yeah. The concept is solid though, it will just require some more work. Handling characteristics tend to get exaggerated in smaller models, not to mention the wing loading. The electronics, though modest(1900kv graupner 250 size, 3s 650mah battery) , are a bit much on the wing loading for that little plane. It was less than the length and width of a single sheet of foam for the wing and tailplane, whereas my tailless ones had a wing the entire length and width of a sheet. I need that wing length, plus the addition of a tailplane.
Ouch!This was earlier this year as in my signature when flying inverted down is up and up is expensive, I was about 8 feet off the deck when I brain farted.
No roll control, spiraled into the ground.What happened, nose plant or just no roll control?
Good info. That's specifically the type of thing I wondered, wether it interfered with the vortical air flow pattern. Good to know it helps.Nasa stuck a bunch of dihederal tips on their low aspect craft. Supposedly cleans up the vortices to make them less prone to tip stalling or changes the aspect ratio to same effect. May not even be relevant at this size but it was a thought. Straight up is my thought. See also Kasperwing.
Definitely. I plan to build it proper size, an entire sheet long and wide at the base for the main wing, and then the addition of a tail plane rather than the mighty mini sized version I just tried. I'll be looking into the upswept wingtips and probably employing those as well. I may look into strakes for the nose, but I'm not sure if those would improve my design since the wing starts so close to the nose. I'll dial down the relative width and size of the ailerons more still, and add a bit more presence to the elevator.Plans to rebuild I hope
Sounds similar to my Avro Arrow and it was way larger, pitch was smooth as silk but roll was very erratic. Once I added wing tips to it and fairly large to begin with , it was like a new plane and docile as can be. I experimented by trimming them down each flight and sure enough when they got down to a certain smaller size the evil came back.No roll control, spiraled into the ground.
Wasn't familiar with the arrow offhand but it's a cool plane. I like a lot of jets from that era, British especially, fighters, bombers, civil prototypes, etc. like the hp-115, TSR-2 etc. my next build will include wingtips straight up 2.5" high, pretty long because I'm going to make them with an A fold straight from 2.5" in on each side. This will reduce the overall aspect of my wing a bit but since I'm going back to the larger configuration, there should be plenty of wing surface to spare for lift and loading. Thanks for the advice, It will definitely come in handy.Sounds similar to my Avro Arrow and it was way larger, pitch was smooth as silk but roll was very erratic. Once I added wing tips to it and fairly large to begin with , it was like a new plane and docile as can be. I experimented by trimming them down each flight and sure enough when they got down to a certain smaller size the evil came back.