How do cast producers manage false bomb or artillery explosions?

How do cast producers manage false bomb or artillery explosions? - Grayscale Photo of Explosion on the Beach

As seen in The Water Diviner, the Turkish troops have made their final assault on the ANZAC troops who have actually slipped away from Gallipoli.

In movies like this, how do cast producers actually manage, use and make it look like the soldiers go flying from the explosion site of mines and artillery?

Also how do they make the explosions like that?



Best Answer

Easy bit first:

how do they make the explosions like that?

They use explosives...

While the concussive force from an artillery shell is not entirely fun, most of the injury actually comes from the shrapnel of the shell or grenade casing rather than the explosion itself. Putting the explosive in a cardboard casing means it is mostly burnt up as part of the explosion.

That said - it still isn't all that safe (at a minimum, the air pressure of the concussive force can end up perforating eardrums - it can do worse depending on force and proximity). Also, by part burying the explosive in the ground, globs of soil, mud and other things can still be flung around.

how do cast producers actually manage, use and make it look like the soldiers go flying from the explosion site of mines and artillery?

For one - they don't use anything like as much explosive as an actual shell would use. The point is to make it look good for the camera, not necessarily real.

Second, everyone on set will be given clear instructions on where the explosives will be set, and when they will be triggered - they may even use markers that are edited out of the shot. Someone off-camera will shout a warning before the explosive is detonated by wire.

Launching stuntmen into the air pretty low-tech - sometimes they just jump, other times they will be pulled by rope/pulley setups, or a spring-loaded pad will launch them onto a mattress that is out of shot.

In addition, these effects can be subsequently enhanced with computer editing techniques to give the impression that even more explosive was detonated than what was used on set.

And then, finally, there's just plain old simple editing to get it looking good for the cinema.




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How do cast producers manage false bomb or artillery explosions? - Person in White Robe Standing Beside Brown Wooden Table
How do cast producers manage false bomb or artillery explosions? - Person in White Button Up Shirt Sitting at Table With Newspaper



How does a controlled explosion work?

A controlled explosion is a method for detonating or disabling a suspected explosive device. Methods which are used to set off a controlled explosion include clearing the area and using a bomb disposal robot to attach a shaped charge to the suspected bomb to sever the explosive from its detonator.

What differentiates bombs from artillery ammo rockets and missiles?

Bombs differ from artillery shells, missiles, and torpedoes in that the latter are all propelled through the air or water by a man-made agency, while bombs travel to their targets through the force of gravity alone.

How powerful is a thermobaric bomb?

The thermobaric device yields the equivalent of 44 tons of TNT using about seven tons of a new type of high explosive. Because of this, the bomb's blast and pressure wave have a similar effect to a small tactical nuclear weapon. The bomb works by detonating in mid-air.

Which element is used for making bomb?

All explosives must contain both oxidizing and reducing agents. Strong oxidizing agents require the use of the most electronegative elements nitrogen, oxygen, fluorine, and chlorine. Therefore, one common aspect of HE compositions is a large percentage of the more electronegative elements nitrogen and oxygen.



IS AN EXPLODING CARTRIDGE DANGEROUS




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