The fact a material as well characterized as the foam on the ET was,
Quote from: TomH on 08/18/2017 07:05 amDo I infer correctly that if the radar spots the vultures just before launch that it is scrubbed? Or can the same radar target a focused sonic weapon, shotgun, etc? Do the environmental protections in place prohibit those?I'm not sure those are great options around a rocket prepped for flight.
Do I infer correctly that if the radar spots the vultures just before launch that it is scrubbed? Or can the same radar target a focused sonic weapon, shotgun, etc? Do the environmental protections in place prohibit those?
Quote from: tdperk on 08/17/2017 08:32 pmThe fact a material as well characterized as the foam on the ET was,There is no such fact. Just another case where anonymous posters choose items to make as fact to support their claims.
Gotta tell you, if I'd seen that I wouldn't be worried about the bird.Still about, what, two seconds from launch it was doing 30mph? No visible change in the foam.I have to believe a CC tank would be far more resistant to damage.I cannot find any engineering justification for the problematic birdstrike resistance requirement, or even yet what that requirement is.
Quote from: Jim on 08/20/2017 02:15 pmQuote from: tdperk on 08/17/2017 08:32 pmThe fact a material as well characterized as the foam on the ET was,There is no such fact. Just another case where anonymous posters choose items to make as fact to support their claims.And as a different poster mentioned, it was well characterized until changed.A poster no more anonymous than you are, Jack.
This IS the kind of thinking that led to both STS disasters. Wanting something to be true doesn't make it true.No VISIBLE change in the foam?.........From a distant poor quality video? The strike could easily have induced fractures in the foam that caused it to tear apart during MaxQ or Max drag. Even a dent could cause an eddy in the airflow that would eat the foam away.You BELIEVE the CC tank is more resistant? This is Rocket SCIENCE, not Rocket Faith. Belief ignores facts. In science, belief can be invoked no farther than hypothesis. Rocket science involves rigorous scientific testing and verification. Belief is what got 17 astronauts killed.Look, I've disagreed with Jim before, too. But you better have some scientific and mathematical justification to do so. This is NOT the forum in which to argue things based on belief.
... I will note that the tanks supplying supercritical H2 and O2 on all the Shuttles were (AFAIK) original equipment, installed when they were built. So they survived the whole life of the Shuttles they were on....
Quote from: tdperk on 08/21/2017 12:28 amQuote from: Jim on 08/20/2017 02:15 pmQuote from: tdperk on 08/17/2017 08:32 pmThe fact a material as well characterized as the foam on the ET was,There is no such fact. Just another case where anonymous posters choose items to make as fact to support their claims.And as a different poster mentioned, it was well characterized until changed.A poster no more anonymous than you are, Jack.Ummmm. He's NOT anonymous. Most people here know that he has a PhD in Aeronautical Engineering/Rocket Science and has worked for NASA for decades.
Quote from: john smith 19 on 08/21/2017 07:34 amQuote from: TomH on 08/21/2017 12:30 am... I will note that the tanks supplying supercritical H2 and O2 on all the Shuttles were (AFAIK) original equipment, installed when they were built. So they survived the whole life of the Shuttles they were on.... What tanks are we talking about?You have copied and redacted incorrectly. I did not write that. Please go back, edit, and correct your mistakes.
Quote from: TomH on 08/21/2017 12:30 am... I will note that the tanks supplying supercritical H2 and O2 on all the Shuttles were (AFAIK) original equipment, installed when they were built. So they survived the whole life of the Shuttles they were on.... What tanks are we talking about?
Sorry about the improper redaction. What tanks are we talking about? John
Quote from: livingjw on 08/21/2017 06:55 pmSorry about the improper redaction. What tanks are we talking about? JohnThe reactant tanks that sored reactants for the Fuel Cell electrical system.