Stratolaunch To Launch Pegasus Under Orbital Teaming

Stratolaunch Systems and Orbital ATK have formed a partnership to use the six-engined, 385-ft.-span Stratolaunch carrier aircraft for air-launching up to three Pegasus XL vehicles on a single mission.

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http://aviationweek.com/awinspace/stratolaunch-launch-pegasus-under-orbital-teaming