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Paul Allen’s giant Stratolaunch plane gets closer to first flight with 80 mph taxi test

12 Oct 2018, 03:33 UTC
Paul Allen’s giant Stratolaunch plane gets closer to first flight with 80 mph taxi test
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Mountains loom in the distance as Stratolaunch Systems’ twin-fuselage airplane is taken out for testing at California’s Mojave Air and Space Port. (Stratolaunch Photo via Twitter)
The world’s biggest airplane, built by Microsoft co-founder Paul Allen’s Stratolaunch Systems, is one step closer to making its first flight after buzzing down the runway at California’s Mojave Air and Space Port this week at speeds as fast as 80 mph.
Stratolaunch’s latest round of taxi tests checked off another item on the seven-year-old company’s to-do list in advance of flight testing. Those test flights are expected to lead to in-the-air rocket launches by as early as 2020.
Based on a development plan laid out this spring, future rounds of taxi tests should reach on-the-ground speeds of roughly 100 mph, and then 140 mph. A speed of 140 mph, or 120 knots, is roughly what it’ll take for takeoff of the twin-fuselage plane, which has a record-setting wingspan of 385 feet.
Stratolaunch and its executives hailed this week’s runway tests in a series of tweets:

Exciting update from this week’s #Stratolaunch testing: The aircraft reached a top speed of 80 mph! ✈ pic.twitter.com/0zqOycPWUj
— Stratolaunch (@Stratolaunch) October 12, 2018

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