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The boost phase is the portion of the flight of a ballistic missile or space vehicle during which the booster and sustainer engines operate until it reaches peak velocity. . This phase can take 3 to 4 minutes for a solid rocket (shorter for a liquid-propellant rocket), the altitude at the end of this phase is 150–200 km, and the typical burn-out speed is 7 k
The last phase in the missile's trajectory is the terminal or re-entry phase, beginning with the re-entry of the missile into the Earth's atmosphere (if exoatmospheric) [13] [14] where atmospheric drag plays a significant part in missile trajectory, and lasts until missile impact. [13]
In the field of weaponry, terminal guidance refers to any guidance system that is primarily or solely active during the "terminal phase", just before the weapon impacts its target. The term is generally used in reference to missile guidance systems, and specifically to missiles that use more than one guidance system through the missile's flight.
Reentry/Terminal phase, which lasts two minutes starting at an altitude of 100 km; 62 mi. At the end of this phase, the missile's payload will impact the target, with impact at a speed of up to 7 km/s (4.3 mi/s) (for early ICBMs less than 1 km/s (0.62 mi/s)); see also maneuverable reentry vehicle.
Semi-active radar homing (SARH) is a common type of missile guidance system, perhaps the most common type for longer-range air-to-air and surface-to-air missile systems. The name refers to the fact that the missile itself is only a passive detector of a radar signal—provided by an external ("offboard") source—as it reflects off the target [1] [2] (in contrast to active radar homing, which ...
Original - Diagram depicting the different stages of a Minuteman III missile path from launch to detonation, as well as the different basic stages of the missile themselves. 1. The missile launches out of its silo by firing its 1st stage boost motor (A). 2. About 60 seconds after launch, the 1st stage drops off and the 2nd stage motor (B) ignites.
A ballistic missile, in contrast, behaves more like a rocket ship and has much less ability to maneuver. ... and potentially transmitting course-corrections to the missile in the mid-flight phase ...
Example of the firing sequence of the Minuteman III intercontinental ballistic missile: the propulsion allows detection by an early warning satellite during phases 2, 3 and 4 corresponding to the operation of the 3 stages of the missile (A, B and C). This missile rises to between 100 and 200 km in altitude (diagram not to scale).