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Glide Phase Interceptor (GPI) Project

Glide Phase Interceptor (GPI) Project:

Amid growing concerns over rivals deploying advanced weapons like hypersonic missiles, Japan is investing in the Glide Phase Interceptor (GPI) Project under joint development with the US.

  • Glide Phase Interceptor (GPI) Project is a missile-intercepting system under joint development by the US and Japan.
  • By the end of 2032, Washington and Tokyo aim to achieve full operational capability for the system.
  • With a traditional Intercontinental Ballistic Missile (ICBM), the warhead separates from its booster and continues on a parabolic, gravity driven trajectory to its target.
  • A hypersonic weapon, by contrast, separates from its booster after the peak of its trajectory and accelerates toward the Earth using gravity. It then performs a pitch manoeuvre to begin a flatter trajectory called the glide phase.
  • Unlike typical ballistic missiles, the hypersonic and glide vehicles travel at five times (or more) the speed of sound on an unpredictable trajectory.