In the Ritz Hotel conference room, Shire briefly explained the requirements for aviation bombs to Steed, including the triggers.
The triggers for aviation bombs must be different.
If we still set the trigger at the front end like ordinary shells, such as mortars, a serious problem could arise: the strong wind aboard the airplane might cause the bombs to collide with each other or even directly trigger the fuse upon release, leading to an explosion.
This is one of the reasons why bombs were seldom carried by planes during this period, and if they were, they were usually thrown by hand at low speed. Even so, accidents were unavoidable.
The solution was to use a "windmill-type trigger mechanism" specific to aviation bombs.
This mechanism has a small propeller attached to the tail fin.
After disarming, the small propeller is driven by the wind and starts spinning. At this point, it does not explode.
