From: snidely.too@gmail.com   
      
   JF Mezei explained :   
   > On 2021-06-20 21:31, Snidely wrote:   
   >   
   >> -- you need 3.5 Raptors to match the thrust of 9 Merlins (depending on   
   >> which source you use for Raptor and Merlin thrust; WP for me)   
   >> -- my rough sketch suggests you can fit 5 Raptors in the skirt of an   
   >> F9, one of them in the center   
   >> -- for a density 438.9 g/l (which may be the super-chilled density at   
   >> -173 C), the existing RP-1 tankage could supply 5 Raptors for 91   
   >> seconds or 4 Raptors for 114 seconds.   
   >> -- F9 first stage time is typically 162 seconds.   
   >   
   >   
   > But would they be able to keep fuselage width of Falcon to get enough   
   > delta V to match kerosene fuelse Falcon9 ? Just crusoiu on whether this   
   > is close, or not even in the same ballpark.   
      
   From the difference in burn time, I don't expect enough delta V   
      
   > Can they stretch Falcon 1 like they do commercial aircraft to lenghten   
   > the methane tank that replaces the kerosene one?  (I realise that   
   > changes centre of gravity so software needs adjustments).   
      
   Jeff already answered this:  No.   The Falcon 9 is as tall as its width   
   supports (see fineness).   
      
   /dps   
      
   --   
    Maybe C282Y is simply one of the hangers-on, a groupie following a   
   future guitar god of the human genome: an allele with undiscovered   
   virtuosity, currently soloing in obscurity in Mom's garage.   
     Bradley Wertheim,  theAtlantic.com, Jan 10 2013   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)