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AFRL and Ursa Major Fly Storable Liquid Engine, Advancing Push for Lower-Cost Hypersonic Missiles

Ursa Major’s throttleable hydrogen-peroxide/kerosene engine is pitched as a cheaper, more flexible path to fieldable hypersonic weapons.

Overview

  • AFRL and Ursa Major conducted a Jan. 27 demonstrator flight at Wright-Patterson AFB that reached supersonic speeds, shifting Draper from ground validation to in‑flight evaluation.
  • The Draper engine uses storable hydrogen‑peroxide/kerosene propellants, delivers about 4,000 pounds of thrust, and can throttle and restart for powered maneuvering across flight profiles.
  • Ursa Major says it moved from contract award to a flight‑ready all‑up round and propulsion system in eight months, enabled by in‑house production and additive manufacturing.
  • Program leaders outline a 2026 test series with flight upgrades and a booster‑assisted flight, targeting a full‑up hypersonic booster demonstrator by early 2027.
  • Ursa Major has introduced the HAVOC modular missile concept built around Draper for multiple launch platforms, as AFRL frames the effort as a path to mass‑producible hypersonic deterrents.