Eclipse

In Development
Firefly Aerospace
Firefly Aerospace
Eclipse

Overview

Reusable medium-lift launch vehicle co-developed with Northrop Grumman for commercial, civil, and national-security missions, launching from Virginia's Mid-Atlantic Regional Spaceport.

All major flight articles - including Miranda engines, LOX transfer line, pressure vessels, and interstage - are in build and test. As of August 2026, Firefly has completed burst-pressure qualification of the first-stage composite overwrapped pressure vessels, put the 95-ft first-stage tanks on the test stand for structural risk-reduction testing (pushing them beyond flight limits to verify margins), and moved the engine base structure that will mount the seven Miranda first-stage engines into assembly and bonding ahead of integration. First launch from Wallops is still targeted no earlier than 2027.

Key Specs

Payload to LEO
16,300 kg
Payload to GTO
3,200 kg
Overall Length
59 m (194 ft)
Target First Launch
NET 2027 (first stage to Northrop Grumman also NET 2027)