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Assume Eq. 6-29 gives the drag force on a pilot plus ejec-tion seat just after they are ejected from a plane traveling horizontally at 1300 km/h. Assume also that the mass of the seat is equal to the mass of the pilot and that the drag coefficient is that of a sky diver. Making a reasonable guess of the pilot's mass and using the appropriate v, value from Table 6-2, estimate the magnitudes of (a) the drag force on the pilot + seat and (b) their horizontal deceleration (in terms of g), both just after ejection. (The result of (a) should indicate an engineering requirement: The seat must include a protective barrier to deflect the initial wind blast away from the pilot's head.) |
| Answer» Solution :`(a)D~~2xx10^(4)N,(b)|a|=(D)/(2m)=(G)/(2)((V)/(v_(1)))^(2)=18g` | |