From: alain245@videotron.ca   
      
   On Jan/4/2021 at 11:24, Dean Markley wrote :   
   > On Monday, January 4, 2021 at 8:13:37 AM UTC-5, Alain Fournier wrote:   
   >> On Jan/4/2021 at 07:30, Jeff Findley wrote :   
   >>> In article ,   
   >>> jfmezei...@vaxination.ca says...   
   >>>>   
   >>>> On 2021-01-03 09:03, Jeff Findley wrote:   
   >>>>   
   >>>>> This is idle speculation. Keep in mind that SpaceX designed and built   
   >>>>> Falcon and Falcon Heavy in recent times, so they have relevant   
   >>>>> experience building and flying orbital class launch vehicles.   
   >>>>   
   >>>>   
   >>>> Hughes Aircraft corporation also had a lot of experience building   
   >>>> planes, and it built the Spruce Goose. At one point, realised it   
   >>>> woudlnt be great, but still fibnished it so Howard Highes could fly it   
   >>>> once to declare the equivalent of "mission accomplished".   
   >>>   
   >>> It was a giant plane made out of wood. Starship is made of stainless   
   >>> steel, the same material used in the original Atlas ICBM/launch vehicle.   
   >> True, but you can also turn that around. The Spruce Goose was made out   
   >> of wood, the same material used in the original Éole (or the original   
   >> Wright Flyer). If you use the same material as the original, but in a   
   >> ship much bigger, you can run into trouble.   
   >>   
   >> I agree with your overall point. I just think that this particular   
   >> argument is feeble.   
   >>   
   >>   
   >> Alain Fournier   
   > I did find that early versions of Starship are using 301 SS.  Later versions   
   are going to use mixes of 304L along with a proprietary SS developed by   
   SpaceX.  For the life of me, I cannot find what SS the Atlas missile used.    
   But I only dedicated a 5    
   minute search as I am currently at work.   However, SpaceX is clearly using   
   their iterative design process to improve materials.  That renders the Spruce   
   Goose/Wright Flyer  comparison invalid.   
   >   
   > Dean   
      
   I agree that the Spruce Goose/Wright Flyer comparison isn't valid. My   
   point is that the Starship/Atlas comparison isn't relevant, for much the   
   same reasons as the Spruce Goose/Wright Flyer comparison.   
      
   [You are at work??? That still exists? :-)  Make sure you don't get   
   infected with dangerous viruses from your co-workers.]   
      
      
   Alain Fournier   
      
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