Press Release

Stratolaunch Carrier Aircraft Completes Fourth Flight Test

By SpaceRef Editor
February 25, 2022
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Stratolaunch LLC is excited to announce the successful completion of its fourth flight test of the carrier aircraft, known as “Roc”. Roc is the world’s largest aircraft, with a 385 ft. wingspan.  The aircraft flew for 1 hour, 43 minutes over the Mojave Desert and reached an altitude of 15,000 feet (4572 m). As part of this latest flight, pilots further prepared the carrier aircraft to support launches of its upcoming hypersonic testbed vehicle, Talon-A.  

Launched from the Roc carrier aircraft, Talon-A vehicles are rocket-powered, autonomous, reusable testbeds carrying customizable payloads at speeds above Mach 5. This capability enables routine access to the hypersonic flight environment, which is critical for scientific research, technological development, and component demonstration. 

Initial results from today’s test objectives include:   

– Continued evaluation of the aircraft’s performance and handling characteristics  

– Validation of full landing gear operations including door functionality, and alternate gear extension. 

“Today’s successful flight demonstrates and validates improvements to the carrier aircraft’s systems and overall flight performance,” said Dr. Zachary Krevor, Stratolaunch President and Chief Operating Officer. “The full landing gear retraction and extension brings the carrier aircraft closer to operational status, a milestone that is necessary to ready the aircraft for Talon-A separation and hypersonic flight tests later this year.” 

In addition to testing the carrier aircraft, the team continues to make progress on system integration of two Talon-A test vehicles, TA-0 and TA-1. The team has also started fabrication of a third vehicle, TA-2, the first fully reusable hypersonic test vehicle. The company anticipates beginning hypersonic flight testing in 2022 and delivering services to government and commercial customers in 2023. 

A press teleconference to discuss results of today’s test flight will be held at 4:30 p.m. PST following the flight. Media interested in attending can register for the meeting here.

About Stratolaunch

Stratolaunch’s mission is to advance high-speed technology through innovative design, manufacturing, and operation of world-class aerospace vehicles. For the latest news and information, visit and follow us on Facebook, Twitter, LinkedIn, and Instagram.

SpaceRef staff editor.