From: damarkley@gmail.com   
      
   On Monday, January 4, 2021 at 11:48:36 AM UTC-5, Alain Fournier wrote:   
   > 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   
      
   Yes, unfortunately, my job is mostly hands on, I am a chemist.  We've been   
   managing the virus fairly effectively with only 3 employees having contracted   
   it since March.  Two of those three were workign from home so, that shows even   
   that is not entirely    
   safe.   
      
   Dean   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)