Self-destruct

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A self-destruct is a mechanism which causes a device to destroy itself under a predefined set of circumstances. Self-destruct mechanisms are sometimes found in high security data storage devices, where it is important for the data to be annihilated in emergencies.

Self-destruct mechanisms are also found on devices and systems, the malfunction of which could endanger large numbers of people. The Space Shuttle Solid Rocket Booster rockets, for example, are wired with explosives so that the boosters can be destroyed in the event that it loses control on launch and heads towards a populated area. This feature can be seen in videos of the Challenger explosion. After the initial disintegration of the shuttle, the two solid rocket pods continue flying out of control until they explode simultaneously several seconds later. This occurred when the Range Safety Officer decided that the separated engines had the potential to endanger those on the ground and detonated the self-destruct system.

The Naval procedure of scuttling is used to 'destroy' a ship, or ships to prevent them being seized and/or reverse engineered.

Use in fiction

Self-destruct mechanisms are an extremely common plot device in science fiction stories. So common, in fact, that it has become a true cliché, or a weak plot device. Especially prominent is the self-destruction of a military installation, a spaceship or the theme of an artificial intelligence destroying itself due to cognitive dissonance (see Does not compute).

Rather unsurprisingly, they were frequently used as a mode of plot development in the Star Trek series. On Federation starships, an auto-destruct mechanism is available. This option is open to the senior officers on the starship in case the starship falls into enemy hands or becomes unworkable for some reason. It was also used as a form of kamikaze weapon, turning the starship into a powerful bomb. It usually had a time delay, so that crew could escape via the escape pods.

Examples of self-destruct in fiction:

In lighter or humorous fiction (such as cartoons and superhero films), the self destruct button is an ubiquitous component in any self-respecting mad scientist's machines. Rather than requiring authorization or procedure, it simply is a button that, when pushed, will cause the machine to self-destruct, frequently destroying the entire structure or complex it is housed in. The often complete uselessness (and danger) of such a device (except to a good guy) is possibly one of the many reasons a mad scientist is known as 'mad'. Likewise, in Inspector Gadget, Chief Quimby gives Gadget each episode's mission on self-destructing paper; inevitably, Gadget carelessly disposes of the paper, which detonates on the Chief.

See also