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Forum:Commercial Space - Military Space
Topic:Virgin Galactic SS2 spaceflight: 'Galactic 02'
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'Galactic 02' in-flight facts are as follows:

  • Take-off Time: 8:30am MDT
  • Altitude at Release: 44,300 feet
  • Apogee: 55 miles
  • Top Speed: Mach 3
  • Landing Time: 9:30am MDT

Michael Colglazier, CEO of Virgin Galactic said: "Today Virgin Galactic took another historic leap forward by flying our first private astronaut mission and demonstrating how our spaceflights will broaden access to space. Jon, Keisha and Ana each embody our fundamental belief that space is for everyone, and we are proud that today's flight has inspired people and communities around the world. This is just the beginning, as we plan to continue flying monthly spaceflights while also developing our Delta Class production spaceships to scale our business."

CJ Sturckow, VSS Unity Commander said: "It is a surreal and humbling experience to have flown Unity today. The wonder and excitement of spaceflight never loses its magic. I had the honor of being joined in the cockpit by Kelly Latimer, one of the first female commercial spaceship pilots. I'm proud of the work we're doing here at Virgin Galactic to fly more people to space."

Kelly Latimer, VSS Unity Pilot said: "In my entire career, from the Air Force Academy to being a test pilot for NASA, nothing tops what I have just experienced at the controls of VSS Unity. Going to space today fulfilled an ambition I've had since I was a child. It is a privilege to be part of a majority-women crew making history as the most female astronauts flying to space in a single mission."

The company will now proceed with post-flight inspections and analysis in preparation for the next commercial space mission, 'Galactic 03,' which is planned for September in a continuation of Virgin Galactic's monthly flight cadence.

David CareyWas the slow but seemingly significant oscillation during descent normal?

Perhaps the effect was magnified by the on-board video but even the ground-camera shot appeared to show the wobbles and porpoising(?) at upper altitudes.

Robert PearlmanFor what it's worth, during the post-flight news conference, Jon Goodwin said that the reentry felt like the vehicle was out of control, but that it was in control the whole time.
David CLooked fun. On the oscillations and yaw around, in that low dynamic pressure the ship won’t be deadbeat aerodynamically damped. Possibly they were happy to just let it do it’s thing rather than chase it with the RCS (which could excite a PIO). Or they may have been controlling to a wide dead-band (it’s a manual system), and the yaw could have been intentional. Either way, makes for a more interesting ride for the passengers.
David CareyThanks, Robert. Jon's comments mirror my sensations while watching.

Appreciate the aero inputs too, David. You made me revisit Control Theory terms which surfaced some ancient angst - I barely made it out of that class alive.

All that movement would have indeed added some "texture" to the descent. Perhaps similar to motorcycle riding with a big buffeting crosswind or on gravel roads. You have to relax (no handlebar death grips!), maintain forward momentum, and leave the bike to wobble about as its own critically-damped system. Pilot induced oscillations can be a thing too.

onesmallstepAlso worth noting among the flight's achievements is VSS Unity commander Fred 'CJ' Sturckow making his record eighth space flight (four Shuttle; four SpaceShipTwo), surpassing fellow Shuttle fliers Franklin Chang-Diaz and Jerry Ross for most space flights; and for launching from three different sites: KSC, FL; Mojave, CA; Sierra County, NM.

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