The german zeppelins of world war i were dirigibles with the following typical characteristics: volume = 15,000 m3 and maximum diameter =
14. 0 m. consider a zeppelin flying at a velocity of 30 m/s at a standard
altitude of 1000 m (look up the corresponding density in appendix d). the zeppelin is at a small angle of attack such that its lift coefficient is
0. 05 (based on the maximum cross-sectional area). the zeppelin is flying
in straight-and-level flight with no acceleration. calculate the total weight
of the zeppelin