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4 results for “l/d”

Formulae (4)

GR = \dfrac{d}{h} = \dfrac{L}{D}

Horizontal distance traveled per unit of altitude lost equals the lift-to-drag ratio.

T = \dfrac{W}{L/D}

In steady level flight, thrust must equal drag, which is weight divided by L/D.

R = \dfrac{V}{c}\dfrac{L}{D}\ln\dfrac{W_i}{W_f}

Maximum range of a jet aircraft from speed, efficiency, L/D and fuel fraction.

E = \dfrac{1}{c}\dfrac{L}{D}\ln\dfrac{W_i}{W_f}

Longest time aloft for a jet, maximized at maximum L/D.