SL1 | Demo Flight
HyImpulse · SaxaVord Spaceport
2027
Rocket file · LV-531
SL1
HyImpulse · IN SERVICE
Photograph: Alpha2221 @ WikiMedia Commons · CC BY-SA 4.0 · licence
SL1 is an expendable launch vehicle built by HyImpulse. It stands 33.0 m tall, lifts 600 kg to low Earth orbit. It hasn't flown yet. Its next flight is SL1 | Demo Flight for HyImpulse, no earlier than 2027.
Specification
Vehicle spec sheet
ON FILE
Height33.0 m
Diameter2.2 m
Payload to LEO600 kg
Payload to GTONOT ON FILE
Maiden flightNOT ON FILE
ReusableNo, expendable
Launch costNOT ON FILE
StatusIN SERVICE
As listed by Launch Library 2. The cost is Launch Library’s figure, not a quoted price. Figures for rockets outside the sixty most-flown were last read on 2026-11-05.
Flight record
Reliability
NO FLIGHTS
Total flights0
Successful0
Failed0
Success rateNO DATA
Landing attempts0
Landing successN/A
Scheduled1
About SL1
3-stage orbital launch vehicle developed by German private company HyImpulse, with capability of up to 600 kg to Low Earth Orbit. All 3 stages are powered by hybrid rocket motors using paraffin and liquid oxygen as fuel.
Upcoming flights
SL1 in the archive
From NASA's public image library and Wikimedia Commons. Each photo shows the credit its licence asks for and links back to where it came from.
Orbitburn is a gravity lander game with 25 ships. It's free on Android, and you can play it in your browser.Get it free on Google Play
Common questions
- How many times has SL1 flown?
- SL1 hasn't flown yet, but 1 flights are scheduled.
- What is SL1's success rate?
- SL1 hasn't flown, so there's no success rate yet.
- When is the next SL1 launch?
- SL1 | Demo Flight, flown by HyImpulse. It's set for no earlier than 2027 from Unknown Pad.
- How much can SL1 lift to orbit?
- Launch Library 2 lists SL1 at 600 kg to low Earth orbit.
- Is SL1 reusable?
- No. Launch Library 2 lists SL1 as expendable, so no stage is recovered to fly again.