According to the company, Stratolaunch's airplane called the "Roc" conducted taxi tests on Friday, reaching speeds upwards of 127 mph. "We're gearing up to hit the skies," the company's Twitter account said.
Today's taxi tests had Roc reaching speeds of 110 Knots (~127 MPH) throughout the morning and early this afternoon. After reaching these speeds for taxi test, we're gearing up to hit the skies. pic.twitter.com/x05TSb5KSW— Stratolaunch (@Stratolaunch) April 16, 2021