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SpaceShipTwo First Feathered Re-Entry

Posted by Michael May 4th, 2011 / 1 Comment

Virgin Galactic today announced that SpaceShipTwo (SS2), the first commercial space ship, successfully demonstrated its unique reentry “feather” configuration for the first time. After a 45 minute climb SS2 was released from VMS Eve in 51,500 feet. The spacecraft established a stable glide profile before deploying, for the first time, its re-entry or “feathered” configuration by rotating the tail section of the vehicle upwards to a 65 degree angle to the fuselage. It remained in this configuration with the vehicle’s body at a level pitch for approximately 1 minute and 15 seconds whilst descending, almost vertically, at around 15,500 feet per minute, slowed by the powerful shuttlecock-like drag created by the raised tail section. At around 33,500 feet the pilots reconfigured the spaceship to its normal glide mode and executed a smooth runway touch down.

SpaceShipTwo (SS2) Feathered Re-Entry from Space

The re-entry from space has always been considered as one of the most technically challenging and dangerous. Once out of the atmosphere the entire tail structure of the spaceship can be rotated upwards to about 65º. The feathered configuration allows an automatic control of attitude with the fuselage parallel to the horizon. This creates very high drag as the spacecraft descends through the upper regions of the atmosphere. The feather configuration is also highly stable, effectively giving the pilot a hands-free re-entry capability, something that has not been possible on spacecraft before, without resorting to computer controlled fly-by-wire systems. The combination of high drag and low weight (due to the very light materials used to construct the vehicle) mean that the skin temperature during re-entry stays very low compared to previous manned spacecraft and thermal protection systems such as heat shields or tiles are not needed. During a full sub-orbital spaceflight, at around 70,000ft following re-entry, the feather lowers to its original configuration and the spaceship becomes a glider for the flight back to the spaceport runway.

Source & Photo: Virgin Galactic

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One Response to SpaceShipTwo First Feathered Re-Entry

  1. Wow. It looks quite a step forward.

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