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Post by The Astronomer on Mar 31, 2017 14:59:54 GMT
I was surfing FB when I came across this one: ARCA Space Cooperation. It has its own plan to make the world's first SSTO rocket, dubbed Haas 2CA. It will be able to boost 100 kg of payload into space in a single stage. The first flight will be in 2018.  The logo  Haas 2CA Any comments? |
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Post by bigbombr on Mar 31, 2017 15:18:14 GMT
I really, really want to believe. However, I'm very sceptical a hydrogen peroxide-kerosine combustion engine has what it takes for a SSTO. The closest to this would be two stage designs like the falcon 9. Being able to go to LEO with a single stage would be revolutionary. But I don't see this taking off, except for suborbital flights.
Also, it's supposedly reusable, but I havent seen any grid fins, landing gear or parachute. It seems odd they claim to launch in 2018. It seems odd, I hadn't ever heard of them before, but they seem to have started development in 2012 (or so they claim).
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Post by The Astronomer on Mar 31, 2017 15:28:23 GMT
I really, really want to believe. However, I'm very sceptical a hydrogen peroxide-kerosine combustion engine has what it takes for a SSTO. The closest to this would be two stage designs like the falcon 9. Being able to go to LEO with a single stage would be revolutionary. But I don't see this taking off, except for suborbital flights. Also, it's supposedly reusable, but I havent seen any grid fins, landing gear or parachute. It seems odd they claim to launch in 2018. It seems odd, I hadn't ever heard of them before, but they seem to have started development in 2012 (or so they claim). I want to use hydrogen fuel, but I wonder if it could get the thrust high enough. They claimed that the rocket's mass ratio is 26. |
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Post by Enderminion on Mar 31, 2017 16:09:48 GMT
I really, really want to believe. However, I'm very sceptical a hydrogen peroxide-kerosine combustion engine has what it takes for a SSTO. The closest to this would be two stage designs like the falcon 9. Being able to go to LEO with a single stage would be revolutionary. But I don't see this taking off, except for suborbital flights. Also, it's supposedly reusable, but I havent seen any grid fins, landing gear or parachute. It seems odd they claim to launch in 2018. It seems odd, I hadn't ever heard of them before, but they seem to have started development in 2012 (or so they claim). I want to use hydrogen fuel, but I wonder if it could get the thrust high enough. They claimed that the rocket's mass ratio is 26. 26!?!? I am calling hoax. |
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Post by The Astronomer on Mar 31, 2017 16:10:49 GMT
I want to use hydrogen fuel, but I wonder if it could get the thrust high enough. They claimed that the rocket's mass ratio is 26. 26!?!? I am calling hoax. We'll see. For now, let's just sit back and enjoy Skylon. |
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Post by The Astronomer on Mar 31, 2017 17:13:45 GMT
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Post by Rocket Witch on Apr 15, 2017 19:14:42 GMT
Mercury-Atlas could deliver over 150kg to LEO, right? That was a stage-and-a-half design that only jettisoned a pair of engines and a retaining collar. Given that, the lack of SSTOs today puzzles me. It seems like if someone wanted to make one they could, there's just a lack of incentive to do so. So honestly I'm hesitant to consider an Earth SSTO a real breakthrough.
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Post by sceolme5 on Jun 2, 2017 2:19:29 GMT
I don't think it is true.
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Post by David367th on Jun 2, 2017 2:24:04 GMT
I'm a simple man, I see linear aerospike and I uplike
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Post by apophys on Jun 2, 2017 2:54:25 GMT
If KSP is anything to go by, the most likely design for an SSTO would use the atmosphere as a major propellant on the way up.
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Post by bigbombr on Jun 2, 2017 6:38:28 GMT
If KSP is anything to go by, the most likely design for an SSTO would use the atmosphere as a major propellant on the way up. FTW! |
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Post by David367th on Jun 2, 2017 14:52:09 GMT
If KSP is anything to go by, the most likely design for an SSTO would use the atmosphere as a major propellant on the way up. FTW! Relevant avatar is too relevant |
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Post by bigbombr on Jun 2, 2017 16:26:11 GMT
Relevant avatar is too relevant Reusable SSTO that can use the atmosphere as the propellant for a large part of the delta-v, can use virtually anything as vacuum propellant from lithium and RP-1 to plain water, and exhaust velocities higher than gas-core NTR's without having to lug an expensive and heavy reactor in orbit. What's not to like? The laser infrastructure on the ground means that all the expensive stuff is out of harms way. |
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Post by thorneel on Jun 2, 2017 20:11:45 GMT
Relevant avatar is too relevant Reusable SSTO that can use the atmosphere as the propellant for a large part of the delta-v, can use virtually anything as vacuum propellant from lithium and RP-1 to plain water, and exhaust velocities higher than gas-core NTR's without having to lug an expensive and heavy reactor in orbit. What's not to like? The laser infrastructure on the ground means that all the expensive stuff is out of harms way. If you are a state actor, people having a humongous laser that are not you? (Not being a state actor, I love the concept and hope seeing it used for mass access to orbit one day) |
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Post by bigbombr on Jun 2, 2017 22:11:35 GMT
If you are a state actor, people having a humongous laser that are not you? (Not being a state actor, I love the concept and hope seeing it used for mass access to orbit one day) I'd assumed a laserlaunch facility would be state-owned, because of the high capital investment, the high power needs (electrical infrastructure needs to be capable of supporting it), it being a death ray and it consisting of military technology (military lasers already are optimised to efficiently penetrate the atmosphere, correct for atmospheric disruptions and track a moving target). I'd expect it to be build with technical assistance from DARPA (or equivalent) or an arms manufacturer producing combat lasers (like Thales, Raytheon, Lockheed, BAE, ...), possibly even with financial support for the military as a foundation for a lasernet. |
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