Could someone be kind enough to tell me how to calculate the CG of a Delta wing such as is used on the Convair F-102, F-106, and B-58 Hustler...This is a triangular wing that has a tip cord length of zero...
I have no problem calculating the CG on tapered wings, but I don't trust my findings on a Delta...Just doesn't look right...
I`m busy building a foam deltawing jet. Where would the center of gravity be ? In the middle of the wing or do we go for 30% from the front of the leading edge of the wing ?
For some reason i think the CG must be right in the middle of the wing.
Help much appreciated
... in wind speed which, he shows, in theory would affect the circulation around the wing, leading to a variation in angle of attack ... a reference, I know who's looking over my shoulder saying, "Stop that!"
I just thought the ModelingScience community might be interested--I hope my brief synopsis did ...
... is a free Android Phone CGC (Center of Gravity Calculator) for planes.
It will calculate the position of the center of gravity of an airplane using the tip chord, root chord, sweep and required CG in percent, measured back from the leading edge at wing root.
It's free, released as ...
... nice stable design with that fat wing and huge vertical stabs. ... pretty much scale. Can't find much on the center of gravity location.
I found this flying wing CG locator ... triangle up front, and the cutlass is pretty much flat up front where the wings hit the fuselage, should I use their figure ...
Have built an 'Estrados' (see 'Foamies' forum) Flat plate Deltawing planform, controlled with 'elevons' & rudder (3mm - 1/4" upward reflex on elevons).
Finally got the CG sorted out and set but now comes trimming. The rolls are awful - very slow and ...
I've made a small Deltawinged aircraft with an SC .25 engine on the front. It is attached to a dolly which will ... the actual zero-fuel CG position.
The first image shows the AC point without considering the fuselage as part of the wing area. The second image includes the fuselage as part of ...
What is the rule of thumb for determining the center of gravity for any given plane? (Aside from this problem, I'd like to know, there has to be a formula for determining the CG on any given plane.)) We were putting floats on an Avistar yesterday and set them ...
Am flying a Electric simple flat Deltawing and Am trying to find a way to slow down the speed when landing. High Alpha works but it's ... combination of thrust and alpha.
What would be the effect of putting spoilers on a DeltaWing?
Is there any other way to slow it down?
Is there a rule of thumb for the size of the vertical stabilized for a deltawing ?? The stabilizer will be closer to the c.g than other wings designs, and probably need ... to be larger than 10 or 20 % of the wing area. Anybody know what rule of thumb to use ?? What % of the wing area ?
... design questions -
For model airplanes - why do Zagis and other "flying wings" have swept wings ... make them more effective as fins? Is the shape of a deltawing aircraft related to the shape of a swept flying wing? ... work better than a true triangle?
What is a "true flying wing", does it omit winglets? ...
Aristo-cat C.G. question
I have the original article from Model Airplane News circa 1964 and ... to the original draftsman for the plan.
There is no center of gravity shown nor mentioned anyplace.
I ... of similar size and power. 'cept he moved the wing forward a good two inches. This ...
I'm working on a scale model of the WWII 'secret project' Junkers EF-128:
Rather than rely on my usual TLAR (That Looks About Right) design method, I thought I should throw some 'science' at working out the required wing twist
I'm looking at the calculation method on this ...
... small depron flat plate model powered by an internally mounted ... alpha manouvers.
I have redesigned the model with a cranked deltawing in an effort ... cousin.
Any info from those in the know would be appreciated. As its a simple model I ought to just make it and try it but I kind of want to understand ...
... diameter would be for a nice flying circular wing? The equipment with be mostly from a crazy max ( ... 8cell 5/4s, and micro radio setup). The wing area on the crazy max ... someobody may want to check my math).
Also...does anybody have any advise on center of gravity? I'm really in the dark here.
It seems to me that the more forward the wing is, the more likely the plane is to enter stall if an abrupt pitch occurs, assuming the center of gravity allows for hands off upright and inverted flight in all cases. Is this true?
... by somehow taking the chord at the tip and the chord at the root of your wing and then drawing a big X.. but I forgot how to do it.. can anyone explain it please?
I known on an airplane with a hershey bar wing you find the center of lift first and then go 30% back to find the optimal cg. Does the ...
I've found a site to figure my C/G on scratch built models and its fine for a regular wing, at 30%. But I have to enter the correct % and it tells me where it is in inches. Is there any info on what % to use for what tyoe of wing( like delta or swept)??
I'm putting a microjet together and the C/G is ...
... about to figure out how much to use? Does it have something to do with fuselage height? Vertical center of gravity?
Should I stop kidding myself, throw ... elevator and throttle plane and move on?
Here is the body so far.... and half a wing... (unglued) as I have not received your advice yet!
... to install a throwing peg (actually a plate). The wing tip panels have a full height balsa ... transfer the force best, but would mounting it ahead of the center of gravity result in more stable ... perpendicular line would run through the center of gravity of the model. Any other comments or suggestions?
With pusher models does center of gravity changes when its under power vs. when its gliding? Is CG different from not pushers at all?
Sorry if this ... for CG somewhere on the web, could anyone point me to a good one? Or maybe it is much easyer to find the cg just by test gliding the model?
... a canard with a taildragger landinggear with the wheels near the center of gravity?
thus not a rutan-quicky but how far aft can you go with the landinggear?
taken in account canard lift ... thrustline, airfoilmoments, wheeldrag, etc.
i have the book model airplane design by andy lennon, ...
... Cat will do. A vintage style model that is impeccable at gliding, under full power ... ..so how come this is happening?
My take on the pushy cat and other vintage models is this:Aerodynamic stability depends ... . Here I conjecture that the angle of the model is such that the high wing and center of lift ...
... building a 1/5 scale Pietenpol aircamper. It has a 12" x 68" wing (816 square inches) ... 27. Since I'm no scale fanatic, I could care less whether or not my model uses a scale airfoil. The only small ... easily enough.
So, do you folks with vastly more modelingscience background than I think this airfoil ...
... forward as possible (under the engine), so hopefully that helps reduce the weight needed, but what about moving the CG slightly aft? It's an 11" constant chord wing that flies great at 75% chord CG...But im wondering how far back would still be safe?
My goal is to lighten the plane... I just think ...