simple kim’s high oxygen program:kimmosasurus school bag ten:mig says it’s only the tractor and the flying wing…….only via a polar bear do you get the maths for a fltyinmg wing or tractor.

weight=m*g,

wingloading=weight/wingarea

v:glide=sqrt:2*weight/cl*rho*s

v:sink=sqrt:(2*weight/cl*rho*s)*sin cd/cl,

v:sink/v:glide=l/d,

thrust required in levelflight=weight/(l/d),

v:climb=thrust excess/weight,

re=70*v*dheight/dchord

l/d(lift)=thrust=drag,

cd=4*sqrt:WEIGHT/WINGSPAN^2,

cl=sqrt:(2*weight/wingloading*s),i-i=1:txt

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