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Firefly Alpha Block 2

Firefly Alpha familyFirefly AerospaceActive

Next flightFirefly Alpha Block 2 | ConnectedCosmos Launch 2NET Q4 2026

Firefly Alpha (Firefly α) is a two-stage orbital expendable launch vehicle developed by the American aerospace company Firefly Aerospace to cover the commercial small satellite launch market. Alpha is intended to provide launch options for both full vehicle and ride share customers. The Block 2 version features increased length and structural strength for both stages, optimized propellant tanks and consolidated in-house batteries and avionics.

Firefly Alpha Block 2 vehicle

Specifications

Thrust
736 kN
Height
31.6 m
Diameter
1.82 m
Launch mass
54 t
Stages
2
Launch cost
$15M
LEO capacity
1,030 kg
SSO capacity
630 kg

Specifications from Launch Library. Figures the operator has not published are omitted.

Flight record

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