> Fred
>
> There were (TWO) tri-gears that day. One mono wheel, one
> mono wheel with the glider wings. All I was saying was all
four
> a/c were in same airspace at same time, same speed. When
tanks
> were topped off each tri- gear took approx. 2 gal more
that the
> mono wheel.
>
> Jim Brown
>
I got that part, but I was just trying to restate "trigear
burns more gas" to simple math. Assuming all were same
engine/prop combination, at 75%, all will burn same gas.
Well, ignoring that a heavier aircraft will burn more in
climb. Fuel burn is proportional to power (though not
always linearly), and power required, in formation flight,
to overcome add'l relative drag has a "cube" in Dr.
Hoerner's handy little formula.
Reg,
Fred F.
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