boost phase

American  

noun

Rocketry.

1. the portion of the flight of a ballistic missile or spacecraft during which the booster and sustainer engines operate to bring it near or to peak velocity.

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Example Sentences

Indeed, an ICBM's trajectory has three different phases: boost phase, midcourse phase, and terminal phase, all of which typically occur in less than an hour from launch to strike.

From Salon

Wells added there is a concern that intercepting during the boost phase could detonate the warhead in a friendly territory.

From Salon

The test objectives include “assessing the upgraded horizontal stabilizers and flight controls during the boost phase of the flight,” the company said in a statement.

From Washington Post

“We’ve got to be able to track them through their flight. We know their trajectory once they are out of the boost phase. You are going to have to track precisely enough so you can engage it with an interceptor,” Obering said in an interview with Warrior earlier this year.

From Fox News

Swarms of laser-armed drones are the next big thing while it studies a how to integrate the ineffective ground-based layers with a still-mythical space-based system to detect and destroy enemy missiles in their “boost phase,” just like Reagan’s Zenith Star but now much-reduced in size, if not cost, thanks to advances in digital electronics.

From Salon