YNM Posted February 2, 2021 Share Posted February 2, 2021 1 hour ago, tater said: I think both propellants can substantially reduce boil off with some mitigation effort. Well, hopefully when they start flying Methalox out we'll see how prone is it to boiloff. Quote Link to comment Share on other sites More sharing options...
Flying dutchman Posted February 2, 2021 Share Posted February 2, 2021 Major Activity at the tank farm Quote Link to comment Share on other sites More sharing options...
RealKerbal3x Posted February 2, 2021 Share Posted February 2, 2021 Probably T-~30ish. Quote Link to comment Share on other sites More sharing options...
Flying dutchman Posted February 2, 2021 Share Posted February 2, 2021 Knock on wood Quote Link to comment Share on other sites More sharing options...
Delta dart Posted February 2, 2021 Share Posted February 2, 2021 Rocket venting! Quote Link to comment Share on other sites More sharing options...
Flying dutchman Posted February 2, 2021 Share Posted February 2, 2021 ss venting! Quote Link to comment Share on other sites More sharing options...
tater Posted February 2, 2021 Share Posted February 2, 2021 (edited) 9 minutes ago, YNM said: Well, hopefully when they start flying Methalox out we'll see how prone is it to boiloff. The boil off is actually pretty well understood. Natural gas and methane are commodity items, routinely stored in tanks sitting outside at ambient temp. I have a propane tank at my house (we're not on the natural gas grid), and it never vents at all that I can tell, sitting in the blazing NM sunlight in July with an ambient temp in the shade that might be >38°C. Edited February 2, 2021 by tater Quote Link to comment Share on other sites More sharing options...
CastleKSide Posted February 2, 2021 Share Posted February 2, 2021 5 minutes ago, tater said: The boil off is actually pretty well understood. Natural gas and methane are commodity items, routinely stored in tanks sitting outside at ambient temp. I have a propane tank at my house (we're not on the natural gas grid), and it never vents at all that I can tell, sitting in the blazing NM sunlight in July with an ambient temp in the shade that might be >38°C. I wonder if that will change in vacuum. lower ambient pressure would increase boil off, right? Quote Link to comment Share on other sites More sharing options...
Delta dart Posted February 2, 2021 Share Posted February 2, 2021 And a hold. Quote Link to comment Share on other sites More sharing options...
tater Posted February 2, 2021 Share Posted February 2, 2021 It's in a tank, the bursting strength of that would matter, and be 1 atmosphere different. The header tanks would be inside (maybe not the nose?), so not exposed to the direct sunlight. That reminds me, most SS diagrams must be wrong about the header tank. We will soon see a frost RING around the LOX header. If the whole nose were the tank, the whole nose would be white. Quote Link to comment Share on other sites More sharing options...
Delta dart Posted February 2, 2021 Share Posted February 2, 2021 According to the NSF stream it was a range violation. Quote Link to comment Share on other sites More sharing options...
RealKerbal3x Posted February 2, 2021 Share Posted February 2, 2021 Just now, tater said: If the whole nose were the tank, the whole nose would be white. SN8's whole nose was white during its flight, you can see it at the end of this video: Quote Link to comment Share on other sites More sharing options...
cubinator Posted February 2, 2021 Share Posted February 2, 2021 Just now, Delta dart said: According to the NSF stream it was a range violation. There's always got to be a range violation... Quote Link to comment Share on other sites More sharing options...
Clamp-o-Tron Posted February 2, 2021 Share Posted February 2, 2021 (edited) 2 minutes ago, Delta dart said: According to the NSF stream it was a range violation. They don't know that, there are just some Cameron County Deputies driving around. NVM, they just found a violator. Edited February 2, 2021 by Clamp-o-Tron Quote Link to comment Share on other sites More sharing options...
Delta dart Posted February 2, 2021 Share Posted February 2, 2021 Nope they just found someone. Quote Link to comment Share on other sites More sharing options...
Flying dutchman Posted February 2, 2021 Share Posted February 2, 2021 Just now, cubinator said: There's always got to be a range violation... Jeff who flying his Cessna again.. Quote Link to comment Share on other sites More sharing options...
JcoolTheShipbuilder Posted February 2, 2021 Share Posted February 2, 2021 Just now, cubinator said: There's always got to be a range violation... was this range violation about the sn8? Quote Link to comment Share on other sites More sharing options...
Clamp-o-Tron Posted February 2, 2021 Share Posted February 2, 2021 Just now, JcoolTheShipbuilder said: was this range violation about the sn8? Nah, just some truck in the range. Quote Link to comment Share on other sites More sharing options...
tater Posted February 2, 2021 Share Posted February 2, 2021 3 minutes ago, RealKerbal3x said: SN8's whole nose was white during its flight, you can see it at the end of this video: Didn't notice that, it doesn't seem to ever get that frosty during static testing 1 minute ago, Delta dart said: Nope they just found someone. Quote Link to comment Share on other sites More sharing options...
cubinator Posted February 2, 2021 Share Posted February 2, 2021 Patrolling for hidden ULA snipers. Quote Link to comment Share on other sites More sharing options...
JcoolTheShipbuilder Posted February 2, 2021 Share Posted February 2, 2021 Just now, Clamp-o-Tron said: Nah, just some truck in the range. Oh ok.... wait wut? Quote Link to comment Share on other sites More sharing options...
Clamp-o-Tron Posted February 2, 2021 Share Posted February 2, 2021 Truck is leaving. @JcoolTheShipbuildercheck the NSF stream. Quote Link to comment Share on other sites More sharing options...
RealKerbal3x Posted February 2, 2021 Share Posted February 2, 2021 Just now, tater said: Didn't notice that, it doesn't seem to ever get that frosty during static testing Probably because they don't fully load propellant for static fires. Quote Link to comment Share on other sites More sharing options...
tater Posted February 2, 2021 Share Posted February 2, 2021 1 minute ago, RealKerbal3x said: Probably because they don't fully load propellant for static fires. I had figured the ring was where the nose mold line hit the tank at a tangent. Quote Link to comment Share on other sites More sharing options...
Flying dutchman Posted February 2, 2021 Share Posted February 2, 2021 Quote Link to comment Share on other sites More sharing options...
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