SPARK, or Spaceborne Payload Assist Rocket - Kauai, also known as Super Strypi,[2] is an American expendable launch system developed by the University of Hawaii, Sandia and Aerojet Rocketdyne.

[3] Designed to place miniaturized satellites into low Earth and Sun-synchronous orbits, it is a derivative of the Strypi rocket which was developed in the 1960s in support of nuclear weapons testing.

[4] It is expected to have a payload capacity of 250 kilograms (550 lb) to a Sun-synchronous orbit at an altitude of approximately 400 kilometres (250 mi).

[6] Aerojet Rocketdyne will produce the motors for all three stages and Sandia is the prime contractor for the rocket's systems.

The first launch of SPARK, named ORS-4, took place on November 3, 2015[7] and was carrying HiakaSat (formerly called HawaiiSat-1[1]) and several secondary payloads,[4][8] including the Edison Demonstration of Smallsat Networks.