Designed, not tested, like many other weapons But this is not the real point. The top celing for a Lancaster carrying a "Grand Slam" not exceeded 6000 mt. or less.Witch-King of Angmar wrote:British very large bombs(20,000lbs Grand Slam and 10,000lbs Tallboy) had been designed specifially for supersonic speed, by Dr. Barnes Wallis.gabriel pagliarani wrote:During WW2 simply nobody cured aerodynamics of such devices in a "tunnel of the wind", and no supersonic shape was developed.Zapfenstreich wrote:......Many times, in movies, there is a loud whistling sound as bombs fall. Were the bombs made to whistle intentionally or is this just a special effect produced for the movie itself?...Z
~The Witch King of Angmar
6000= 0.5*9.81*t*t ; t= sq root(12000/9.81) ; T=35 secs
6000= v*35 ; V= 171 m/sec or 617 km/h.
Galilei showed that 2 graves dropped from the same height must touchdown all together without any drag of air.
Even if 1 of them is only a feather. Consequently in vacuum a 500kg bomb touch down with the same speed of a "Grand Slam": in air they can only be dragged back reaching a lower speed than 617 Km/h.
Galileo Galilei vs. Barnes Wallis scored 1-0