The main usage of repulsors is for defense, as the blast in which they're emmited can even vaporize enemies. They can also be used to stabilize flight in the case of being used in Iron Man armors.
A repulsor generator is an electronic device which uses particle beam technology to project a repulsor blast. In numerous attacks perpetuated by Ezekiel Stane, all the repulsor generator units from Stark Industries, the only creator of this technology in the world, were destroyed. Luckly, Tony Stark had created a new miniaturized repulsor generator, called Repulsor Tech node, which he would later use to power himself, his armors and produce them in mass to finance his new creations for his new enterprise, Stark Resilient.
The latest model of Repulsor technology named is that of Mark IVa, featuring a different color for its beams, red.
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