Tag Archives: Roc

Stratolaunch’s Roc airplane completes fastest taxi test

Capitalism in space: Stratolaunch’s giant Roc airplane has successfully completed its fastest taxi test so far, traveling 90 miles per hour down a runway.

This is about two-thirds of the planned fastest taxi test speed, about 150 miles per hour. Once these tests are completed successfully, they will then finally attempt take-off.

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Stratolaunch completes taxi test at 80 mph

Capitalism in space: Stratolaunch this week completed a series of taxi tests with its giant airplane Roc, reaching speeds as much as 80 mph.

This is a little less than half the speed required for take-off. It also appears that they are proceeding very cautiously with these taxi tests, increasing the speed with each new test by small amounts, about 20 to 40 mph.

The big moment will of course be when this giant plane actually takes off. It appears that might happen within a month or so.

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Stratolaunch to build its own upper stages

Capitalism in space: Stratolaunch today announced that it is designing and building three differently-sized upper stage rockets to attach to the fuselage of its giant Roc airplane.

Beside the Pegasus rocket, owned by Northrop Grumman, aimed for first flight in 2020, Stratolaunch will build a medium and medium-heavy rockets, with the former set for a 2022 flight, as well as a fully reusable space plane, now in early development.

The space plane concept would apparently be capable of taking payloads up and down from orbit, and could therefore become the first totally reusable launch capability.

Overall, it does appear that the company, unable to find someone else to design its upper stage, has been forced to do it itself.

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More testing of “Roc,” Stratolaunch’s giant airplane

This past weekend Stratolaunch completed more tests on its giant airplane, now nicknamed “Roc.”

They had intended to do another taxi test, but didn’t for some reason. Instead, they did test fueling operations. full-power engine tests, and communication tests.

Their upcoming schedule appears to me to be very extended.

Stratolaunch executives laid out the test schedule for the plane, which was built by Mojave-based Scaled Composites, during a space conference in April. The company plans to follow up on the first two taxi tests (at runway speeds of 15 mph and 40 knots) with three more at speeds of 70, 85 and 120 knots.

The last speed is roughly what’s needed for takeoff.

After the fifth taxi test, Stratolaunch would put the plane into the air for a series of flight tests over the course of what’s expected to be 18 to 24 months. In April, executives said they were targeting the first flight test for this summer (which technically runs until Sept. 23).

They also have not yet announced any launch contracts, though there have been announcements that both Northrop Grumman’s Pegasus and Virgin Orbit’s LauncherOne will fly on Roc.

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