A C-5 is prepared to takeoff from Runway 03 at Kirtland AFB. The runway is 10,000’ long and is at an elevation of 5300’ MSL. The C-5 has a standard day sea level takeoff roll (S1) of 7500’. Can the C-5 takeoff on this runway at Kirtland if the density ratio (σ) is 0.8539? Show all work. s2 = s1 ∙ (1/σ)²
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The takeoff roll adjusted for the height is 10,286'. It will almost be able to lift off but not quite. The math is as follows:s2 = s1 ∙ (1/σ)²s2=7500*(1/.8539)²s2=7500*1.372=10286'