Firefly Beta

Firefly Beta is an evolutionary design based on Firefly Alpha technology. Beta is a 2.5-stage launch vehicle capable of delivering 4,000 kg to a 200 km (125 mile) Low Earth Orbit and has the capability of achieving Geosynchronous Transfer Orbits. The Beta vehicle utilizes technologies such as all carbon composite tanks, heritage LOx/RP-1 liquid fueled engines and builds on other elements of the existing Alpha architecture. Firefly Beta will have lowest cost per kg to orbit of all launch vehicles in the 4,000 kg and under class.

Firefly Aerospace Payload User's Guide

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BETA

Performance

Payload LEO
4,000 kg LEO 28.5°, 200 km
Payload SSO
3,000 kg SSO, 500 km

Propulsion: Stage 1

Cores
3X Alpha Stage 1
Engine
12X Reaver 1
Propellant
LOX / RP-1
Propellant feed
Turbopump
Combustors
12
Thrust (vac)
2,208 kN 496,378 lbf
Isp (vac)
295.6 sec
FireFly Alpha
FireFly Alpha

Beta Launch Vehicle: Payload Accommodation

Propulsion: Stage 2

Engine
1X Lightning 2
Propellant
LOX / RP–1
Propellant feed
Turbopump
Combustors
1
Thrust (vac)
163 kN 36,643 lbf
Isp (vac)
324 sec

Dimensions

Stage 1 Diameter (per core)
1.8 m 6 ft
Stage 2 Diameter
2.8 m 9.2 ft
Payload fairing diameter
2.8 m 9.2 ft
Overall length
31 m 101.7 ft

Beta Launch Vehicle: Payload Accommodation