Low-cost launcher start-up company Firefly Space Systems plans to conduct the first full-scale development test of its Alpha vehicle’s pressure-fed FRE-2 aerospike rocket engine in the fourth quarter of this year. The 125,000-lb.-thrust engine will be the first aerospike rocket to fly and is pivotal to Firefly’s goal of developing a scalable family of relatively simple, lightweight launchers for the small satellite market. The initial vehicle, called the Alpha, is designed to ...

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