Design an RC plane in 10 Steps | Aircraft Design Example

[@Siavash.Goudarzi]

Thank you

[@JB-dv7ew]

This guy 100% read Daniel Raymer’s book

[@daviddavids2884]

0614 good up 'til now. in addition to a cg, an aircraft has a center of mass (c-m). cg is the span-wise line of a balance (when the aircraft is flying), located at the wing's 'lower' surface. nominally, located at thirty percent of chord/mac. the correct location of c-m is, on the thrust line, at a point that vertically aligns with the wing's neutral point. that is, twenty-five percent of chord/mac. location of c-m is indicated in this illustration.

[@daviddavids2884]

0717 illustration/narrative suggests a wing configuration that results in a FULL TIME positive aoa of eight degrees. that is dumb. a small/tiny wing should always be designed having a flat-bottomed profile, one that precisely resembles the original clark-y profile. the thickness of the clark-y is 11.7 percent, and that thickness accommodates about three degrees of built-in positive aoa; when the wing is at zero-degrees aoa relative to its lower surface.

[@AircraftDesignToolbox]

The wing incidence angle is around 2.6 degrees. The angle is exaggerated in the figure for clarity. What this means is that when the angle of attack of the fuselage is 0 degrees, the wing experiences an angle of attack of 2.6 degrees. This angle is optimized for cruise.