tater Posted January 12, 2023 Author Share Posted January 12, 2023 Quote Link to comment Share on other sites More sharing options...
Minmus Taster Posted January 12, 2023 Share Posted January 12, 2023 1 hour ago, tater said: One of the best parts about a new rocket being assembled is finally no longer having to see those god awful photoshopped images of it instead of the actual thing; Quote Link to comment Share on other sites More sharing options...
tater Posted January 13, 2023 Author Share Posted January 13, 2023 Quote Link to comment Share on other sites More sharing options...
tater Posted January 25, 2023 Author Share Posted January 25, 2023 Quote Link to comment Share on other sites More sharing options...
tater Posted January 25, 2023 Author Share Posted January 25, 2023 Quote Link to comment Share on other sites More sharing options...
Kartoffelkuchen Posted January 25, 2023 Share Posted January 25, 2023 So shiny I like that they actually sticked to the design they marketed it with in the beginning, looks very cool. Quote Link to comment Share on other sites More sharing options...
RCgothic Posted January 25, 2023 Share Posted January 25, 2023 It actually looks really small. My sense of perspective had been getting warped I guess! Quote Link to comment Share on other sites More sharing options...
tater Posted January 25, 2023 Author Share Posted January 25, 2023 1 hour ago, RCgothic said: It actually looks really small. My sense of perspective had been getting warped I guess! Only 5.4m dia. Quote Link to comment Share on other sites More sharing options...
tater Posted January 30, 2023 Author Share Posted January 30, 2023 Quote Link to comment Share on other sites More sharing options...
mikegarrison Posted January 30, 2023 Share Posted January 30, 2023 On 1/25/2023 at 9:08 AM, tater said: It's kind of bold of them to claim "unmatched reliability" for a rocket that has never even flown. Maybe they ought to fly it a few times before starting to claim how reliable it is? Quote Link to comment Share on other sites More sharing options...
tater Posted February 2, 2023 Author Share Posted February 2, 2023 ULA knows what color the flag is. Quote Link to comment Share on other sites More sharing options...
tater Posted February 10, 2023 Author Share Posted February 10, 2023 Quote Link to comment Share on other sites More sharing options...
tater Posted March 1, 2023 Author Share Posted March 1, 2023 ! Possible buyers per Berger: LockMart or Boeing—likely LockMart of the two. Blue Origin Amazon NG Quote Link to comment Share on other sites More sharing options...
AckSed Posted March 1, 2023 Share Posted March 1, 2023 The hell? Quote Link to comment Share on other sites More sharing options...
Beccab Posted March 1, 2023 Share Posted March 1, 2023 What Quote Link to comment Share on other sites More sharing options...
tater Posted March 1, 2023 Author Share Posted March 1, 2023 My guess is Boeing wants out, they have other issues right now. Quote Link to comment Share on other sites More sharing options...
Beccab Posted March 1, 2023 Share Posted March 1, 2023 5 minutes ago, tater said: My guess is Boeing wants out, they have other issues right now. Or Lockmart wants Boeing out Quote Link to comment Share on other sites More sharing options...
Minmus Taster Posted March 1, 2023 Share Posted March 1, 2023 Quote Link to comment Share on other sites More sharing options...
tater Posted March 9, 2023 Author Share Posted March 9, 2023 Quote Link to comment Share on other sites More sharing options...
Kartoffelkuchen Posted March 9, 2023 Share Posted March 9, 2023 3 hours ago, tater said: Excuse me, but "he"? Rocket looks very cool though Quote Link to comment Share on other sites More sharing options...
Meecrob Posted March 9, 2023 Share Posted March 9, 2023 9 minutes ago, Kartoffelkuchen said: Excuse me, but "he"? Rocket looks very cool though Well it does look more like male anatomy than female. Quote Link to comment Share on other sites More sharing options...
tater Posted March 9, 2023 Author Share Posted March 9, 2023 Vulcan (Haphaestus) Quote Link to comment Share on other sites More sharing options...
tater Posted March 21, 2023 Author Share Posted March 21, 2023 Quote Link to comment Share on other sites More sharing options...
Exoscientist Posted March 22, 2023 Share Posted March 22, 2023 (edited) Can Vulcan Centaur launch on just two BE-4 engines without side boosters? This Blue Origin page says Vulcan Centaur can get 10.8 tons payload to LEO on its two BE-4 engines without using side boosters: But we can calculate the mass of the Vulcan booster to show its beyond that of the thrust of the two BE-4 engines. See here: According to the heights given along the side of the image on the right, the bottom of the booster tank is at about 20 feet high, and its top at about 110 feet, for a length of 90 feet, 27.4 meters. The diameter is 5.4 meters, for a radius of 2.7 meters. Then the volume is π*2.72*27.4 = 627.5 m3 . The density of methalox or methanolox at the mixture ratio of liquid O2 to CH4 of 3.6 is about 800 kg/m3. Then the mass of the propellant is 502,000 kg. But the sea level thrust of the BE-4 engine is 550,000 pounds, so two is 1,100,000 pounds, i.e., 500 metric tons force. So two BE-4’s could not even loft the booster stage, let alone the upper stage and payload. Robert Clark Edited March 23, 2023 by Exoscientist Quote Link to comment Share on other sites More sharing options...
tater Posted March 22, 2023 Author Share Posted March 22, 2023 17 minutes ago, Exoscientist said: But the sea level thrust of the BE-4 engine is 550,000 pounds, so two is 1,100,000 pounds, i.e., 500 metric tons force. So two BE-4’s could not even loft the booster stage, let alone the upper stage and payload. You're suggesting ULA is lying, or haven't done the actual math with the real numbers that they in fact know for certain? My guess would be that they would prop load to what would fly with a given payload. So the tanks 100% full with the SRMs all in place, and possibly a lower prop load for configurations with fewer SRMs. Quote Link to comment Share on other sites More sharing options...
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