New thermal protection system developed by Sierra Space
Sierra Space yesterday announced that it has developed in partnership with Department of Energy’s Oak Ridge National Laboratory in Tennessee a new thermal protection system (TPS] that it expects will give its Dream Chaser mini-shuttles a heat shield that can be reused frequently and fast.
The TPS tiles are made of a proprietary composite material that’s as strong as carbon fiber but with the added high-temperature stability of ceramic materials. The composite tiles have low-density thermal protection properties that are vital for insulative protection and stable flight dynamics. Atmospheric re-entry exposes spacecraft to speeds of more than Mach 17 (About 13,000 mph or 21,000 kph) with temperatures reaching higher than 3,100 degrees Fahrenheit (1,704 degrees Celsius).
These new tiles are based on the shuttle tiles, but apparently use carbon fibers to strengthen them so they are more robust and require less replacement. The shuttle tiles were much too fragile, requiring significant replacement after each launch. That fragility also caused the destruction of Columbia on its return to Earth in 2003, because the tiles were damaged badly when hit by foam coming off the shuttle during launch.
On Christmas Eve 1968 three Americans became the first humans to visit another world. What they did to celebrate was unexpected and profound, and will be remembered throughout all human history. Genesis: the Story of Apollo 8, Robert Zimmerman's classic history of humanity's first journey to another world, tells that story, and it is now available as both an ebook and an audiobook, both with a foreword by Valerie Anders and a new introduction by Robert Zimmerman.
The print edition can be purchased at Amazon. from any other book seller, or direct from my ebook publisher, ebookit.
The ebook is available everywhere for $5.99 (before discount) at amazon, or direct from my ebook publisher, ebookit. If you buy it from ebookit you don't support the big tech companies and the author gets a bigger cut much sooner.
The audiobook is also available at all these vendors, and is also free with a 30-day trial membership to Audible.
"Not simply about one mission, [Genesis] is also the history of America's quest for the moon... Zimmerman has done a masterful job of tying disparate events together into a solid account of one of America's greatest human triumphs."--San Antonio Express-News
Sierra Space yesterday announced that it has developed in partnership with Department of Energy’s Oak Ridge National Laboratory in Tennessee a new thermal protection system (TPS] that it expects will give its Dream Chaser mini-shuttles a heat shield that can be reused frequently and fast.
The TPS tiles are made of a proprietary composite material that’s as strong as carbon fiber but with the added high-temperature stability of ceramic materials. The composite tiles have low-density thermal protection properties that are vital for insulative protection and stable flight dynamics. Atmospheric re-entry exposes spacecraft to speeds of more than Mach 17 (About 13,000 mph or 21,000 kph) with temperatures reaching higher than 3,100 degrees Fahrenheit (1,704 degrees Celsius).
These new tiles are based on the shuttle tiles, but apparently use carbon fibers to strengthen them so they are more robust and require less replacement. The shuttle tiles were much too fragile, requiring significant replacement after each launch. That fragility also caused the destruction of Columbia on its return to Earth in 2003, because the tiles were damaged badly when hit by foam coming off the shuttle during launch.
On Christmas Eve 1968 three Americans became the first humans to visit another world. What they did to celebrate was unexpected and profound, and will be remembered throughout all human history. Genesis: the Story of Apollo 8, Robert Zimmerman's classic history of humanity's first journey to another world, tells that story, and it is now available as both an ebook and an audiobook, both with a foreword by Valerie Anders and a new introduction by Robert Zimmerman.
The print edition can be purchased at Amazon. from any other book seller, or direct from my ebook publisher, ebookit. The ebook is available everywhere for $5.99 (before discount) at amazon, or direct from my ebook publisher, ebookit. If you buy it from ebookit you don't support the big tech companies and the author gets a bigger cut much sooner.
The audiobook is also available at all these vendors, and is also free with a 30-day trial membership to Audible.
"Not simply about one mission, [Genesis] is also the history of America's quest for the moon... Zimmerman has done a masterful job of tying disparate events together into a solid account of one of America's greatest human triumphs."--San Antonio Express-News
The tiles didn’t fail during Columbia, it was a filed RCC panel on the wing’s leading edge.