Most airfoils have an aerodynamic center at roughly 25% of the mean aerodynamic chord (MAC), so that is our reference point. Useful Formulas used with Flying Model Aircraft. By Aeromodellers for Aeromodellers. As the percentual position of the MAC for the CG is also configurable, you can use it with standard airplanes (with tail) too, It's only a question of configuring the right amount. now a 30% plane with 1500-2000in^2 of wing area and 15-30lbs of weight, no 35oz wont make it a particularly bad flier out of the box. Then divide the weight of your airplane by your wing area in square feet. In an RC airplane, we have only the feel of the transmitter and the flying quality. RC plane calculator using matlab GUIDE. The wing Designer 1 of eCalc.ch visualizes your single panel wing design and evaluates the center of gravity (CG). The formulas presented on this page should be helpful to newcomers to the hobby. it depends on how large the plane is. Remark¹: for extreme wing dihedral (V-shape) or for all V-Tail use the planform dimensions projected onto the horizontal plane. Wing loading is expressed in ounces per square foot of wing area. Figure wing area using formulas above by picking the wing shape that best matches your plane. It has been found both experimentally and theoretically that, if the aerodynamic force is applied at a location of 25% of the Mean Aerodynamic Cord (MAC), the magnitude of the aerodynamic moment remains nearly constant even when the angle of attack changes. Wing area … The WCL of a model should ideally be the same as that of it's full-size equivalent if scale flight performance is to be achieved. Calculator solving for aircraft airplane wing lift force given coefficient, air density, velocity and area Getting Started. By using the wing span we can calculate various parameters like fuselage length, wing area, wing cord, wing thicknes, surface area of horizontal and vertical sabilizer, center of gravity for trainer and delta wing aircraft So wing loading is very important to get correct design to the airplane and is immensely affected the control of the RC plane in general. The Radio Control Aero Portal bringings the R/C model aircraft pilot all the news, views and infomation available in the radio control model aircraft world. select the type of your tail (standard stabilizer, T- or V-tail, canard, flying wing or delta) and repeat 2. to 4. for your stabilizer. 28 Jan 13 - Added Calculator for Metric values. 35oz/sqft is what makes .60 class planes (roughly 625in^2 of wing area, 6-9 pound sport planes) fly like dogs and be crashed by bad pilots in true scale competitions. The formula for stall speed as a function of wing loading is: stall speed = K * square root of wing loading, where wing loading is in … Wing loadings are figured by dividing the wing area of your plane by 144 to convert square inches to square feet. From the newcomer to the expert, there's something for everyone! "Ounces" in this case is flying weight, aka "all up weight." WingCGCalc is a flying wing CG calculator flexible enough to calculate complex wings, with multiple panels and forward swept. The carrier plane needs bigger wing area than a trainer plane as shown in the below picture. RC PLANE CALCULATOR USING MATLAB. These are fairly basic and easy to calculate formulas that will give a good indication of what to expect from an aircraft before flying it for the first time. We can change the CG to get the quality we want without using a lot of exponential.