KandyToys Flying Whistle Bomb 28cm PU Foam Flying Missile Beach Toy

Product Information

A version of the bomb with both wings removed and the propeller blades reduced in size to a triangular shape is shown in Figure 4. In this version an impact fuze is fitted.

Suspended close to the balloon may be found a small canister, of ordinary tin colour, 8 in. diameter and 9 in. long with lengths of string or wire which may amount to a total of 1,000 feet attached. The contents of these canisters (shown suspended at the bottom of Fig. 77) are harmless unless exposed to a naked flame. Some historians and soldiers argue that the whistling was intended to warn civilians of the coming danger, so they could have time to take cover or run away, but that theory falls apart when you look at the physics of such a sound. It would be nearly impossible to tell what direction the bomb was coming from by the wail alone, so it could be headed straight for you, or might land 120 yards away. Furthermore, those bomb flight times would be relatively short, so even if you did hear the wailing cry of a falling bomb, you would have very little time to react or “run away”. The whistle may have given enough warning to cover could be taken, or you could fall to the ground and cover your head, but that’s about it. Some fireworks are deliberately designed to make a bomb whistle sound. The most common way to do this is to combine a special fuel with a partially empty combustion chamber. The empty space acts as a resonance chamber, and since it gets larger as the fuel burns, the pitch decreases over time.

Download whistle royalty-free sound effects to use in your next project.

Normally when the bomb goes into a dive, the propulsion unit cuts out and the light fades, but cases have been reported where the bomb has glided some minutes before impact, with the propulsion unit cut out; it then falls with a slight whistle. In other cases again, the bomb has dived with the unit still running. In some instances the bomb has turned a complete circle at the end of its flight before diving, but usually it continues on almost a straight course, turning slightly to the left—or port—as it dives. The interval between the propulsion unit cutting out and impact with the ground has varied from 2 seconds to 2 minutes, but is usually between 5 and 15 seconds. Peter - In principle, if the pilot of the plane could have heard the whistle, he would have heard it in the way described - a high pitched sound, falling in frequency according to the well known Doppler effect. This is the same effect as when say a police siren changes pitch as it approaches and then passes by, and is due to the motion of the object compressing the wavelength of the sound as it approaches the observer - that is increasing its pitch and stretching it as it moves away.

The cylinder has the effect of a brake, delaying the fall of the mine through air or water. The mine itself remains externally unchanged. The metal segments, of which some. may bear the markings B.V.3., and other components of the false nose (see Figure 29) may be found intact at some distance from the mine.

All are painted bright green. No. 5—Pull igniter No. 6—fuzed in tail. Nos. 11 and 15—fired electrically. This balloon may also carry a device used in connection with radio-detection consisting of a light wooden kite-like framework the top of which is a square of about 3 ft. side, from the points of which strips converge to a point 2 ft. below ​the centre of the square. Metallised paper is stretched across the framework and secured to it by glue.