The Lattice Method for Right - Angle Trapezoidal Wings
By A. H. Haji
In order to numerically compute the drag and lift forces on a simply - shaped wing with a desired attack angle and velocity, the Lattice Method can be used as a relatively fast and reliable approach. In this code I have implemented this method for the trapezoidal wings with one right angle.
A sample case with output results is shown here.
>> lmethod
root(m)=4
tip(m)=1
span(m)=5
root elements number=8
span elements number=10
free stream velocity(m/s)=200
angle of attack(deg)=5
air density(kg/m^3)=1.04
lift =
5.7937e+004
drag =
5.0495e+003
>>