|First stage||Hercules X-265 |
2900 kN (650,000 lbf)
|Second stage||Hercules X-271|
|Length||8.20 m overall|
|Max Speed||>Mach 10 (7500 mph)|
|Typical battery crew|
|Guidance system||Radio Command|
|Warhead|| W-66 nuclear low Kt, |
|Rate of fire:|
The Sprint accelerated at 100g, reaching a speed of Mach 10 in 5 seconds. It was designed for close-in defense against incoming nuclear weapons. As the last line of defense it was to intercept the reentry vehicles that had not been destroyed by the Spartan, with which it was deployed.
The Sprint was stored in and fired from a silo. To make the launch as quick as possible, the cover was blown off the silo by explosive charges; Then the missile was ejected by an explosive-driven piston. As the missile cleared the silo, the first stage fired and the missile was tilted toward its target. The first stage burned out after only 1.2 seconds, but produced 2900 kN (650,000 lbf) of thrust. The second stage fired within 1 - 2 seconds of launch. Interception at an altitude of 1500 m to 30000 m took at most 15 seconds.
The Sprint was controlled by ground-based radio command, which tracked the incoming reentry vehicles with phased-array radar and guided the missile to its target.
The sprint was armed with an enhanced radiation nuclear warhead with a yield reportedly of a few kilotons, though the exact number has never been declassified. The warhead was intended to destroy the incoming reentry vehicle primarily by neutron flux.