I have not had a delta do the death spiral, but I probably tend to keep some inertia with power in most turns.īTW. In my opinion the delta does fly pretty well at a high alpha angle compaired to a traditional flying wing, but has no other improvements in flight. I would be interested in the optimum airfoil for a delta myself. You can do a double taper nose By cutting 4 wing parts rather than 2) but that looks kind of goofy. The problem is getting the back part light enough so that you can eliminate the pod, hence my sheeted design above. I would probably router out some foam on one side, and cover it with film to try to save weight at the rear of the wing.Īs far as taking it to a point at the tip, I think that would be better than having to add a fuse pod to get it to balance. Airfoils An airfoils shape is defined by several parameters, which are shown in the figure below.
#AIRFOIL TYPES FULL#
I like the way the full thickness handles at lower airspeed, but when I thought about using this airfoil for a delta, I figured the weight would get me at full thickness. I pretty much use the full thickness MH-45 for all my wings, cause I have a full set of templates from 15" long to 3" long. I did not use any internal rib type support at this span. Nice to cram the radio gear into the hollow void. After shaping the top section, I had to shave the bottom TE of the top part so that I had only one 5mm foam thickness at the TE.įlies fantastic, and is very light since it is mostly hollow.
The white foam I used for the LE had enough sweep (boomerang shape)to hold flat and stable to the table, where I glued it to the bottom foam sheet section. I then used foam sheet and cut the bottom out in one part. I did this on the top and bottom of the wing, then I cut off the trailing side of the wing, leaving me only the spar slot forward section. Then I ran my dremel router along the marks with a guide to create what looks like spar slots at the depth of 5 mm foam sheet. I made marks from root to tip at the thickest part of the airfoil. It turned out to be a fantastic design.įirst I cut the wing in half and set the sweep angle deeper, similar to a stryler's LE sweep angle. I am looking at a model with 50 inch wingspan. It appears the the airfoil on the C-130 is very close to NACA 2320 airfoil. from publication: A practical approach for selecting optimum wind rotors The main.
#AIRFOIL TYPES DOWNLOAD#
I did one similar to your description with a wing that got it's trailing edge chewed up by another flying wings prop. I have drawn some plans based on what I believe are true scale drawings. Download scientific diagram Optimum pitch for different types of airfoils (r H 0.05) (N B 1, 2, 3, and 4).
I do not know the optimum airfoil selection for a delta design. For example, a wing moving at 100 mph will generate relative wind moving in the opposite direction over and under the wing at 100 mph. Relative wind Airflow relative to an airfoil created by movement of the airfoil. Angle of attack The angle between the chord line and flow direction. Lower surface camber the curve of the bottom of the airfoil. I would call a delta a variant of a flying wing. Upper surface camber The curve of the top of the airfoil that is typically more pronounced than the lower surface.
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