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Pegasus HAPS

Rocket file · LV-132

Pegasus HAPS

Orbital Sciences Corporation · Pegasus · RETIRED

Photograph: NASA · NASA Image and Media Guidelines · licence

Pegasus HAPS is an expendable launch vehicle built by Orbital Sciences Corporation. It stands 15.5 m tall, lifts 250 kg to low Earth orbit, first flew on 17 July 1991. It has flown 2 times with 2 successes, a success rate of 100.0%. It has nothing on the Launch Library 2 schedule right now.

Specification

Vehicle spec sheet

ON FILE
Height15.5 m
Diameter1.3 m
Payload to LEO250 kg
Payload to GTONOT ON FILE
Maiden flight17 July 1991
ReusableNo, expendable
Launch costNOT ON FILE
StatusRETIRED

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

ON RECORD
Total flights2
Successful2
Failed0
Success rate100.0%
Landing attempts0
Landing successN/A
Scheduled0
VariantHAPS

About Pegasus HAPS

The Pegasus is an air-launched rocket developed by Orbital Sciences Corporation (now part of Northrop Grumman Innovation Systems). Capable of carrying small payloads of up to 443 kilograms (977 lb) into low Earth orbit, the vehicle consists of three solid propellant stages and an optional monopropellant fourth stage. Pegasus is released from its carrier aircraft at approximately 40,000 ft (12,000 m), and its first stage has a wing and a tail to provide lift and attitude control while in the atmosphere. The HAPS variant adds a Hydrazine Auxiliary Propulsion System maneuvering stage.

Upcoming flights

Manifest

EMPTY

Pegasus HAPS is retired, and no flight is filed.

All upcoming launches

Pegasus HAPS 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.

Haps, église St.Nicolas
Haps, église St.NicolasHavang(nl) · public domainWikimedia Commons ↗
Haps, la légende de Saint Nicolas
Haps, la légende de Saint NicolasHavang(nl) · public domainWikimedia Commons ↗
Haps, souvenir du chemin de fer
Haps, souvenir du chemin de ferHavang(nl) · public domainWikimedia Commons ↗

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Common questions

How many times has Pegasus HAPS flown?
2 times, with 2 successes and 0 failures.
What is Pegasus HAPS's success rate?
100.0%. That's 2 successful flights out of 2 attempts.
How much can Pegasus HAPS lift to orbit?
Launch Library 2 lists Pegasus HAPS at 250 kg to low Earth orbit.
Is Pegasus HAPS reusable?
No. Launch Library 2 lists Pegasus HAPS as expendable, so no stage is recovered to fly again.