SpaceX: making noise in Texas

[spacester]

<font color="yellow">102,000 lb/ft X 27 engines = 2,754,000 lb/ft</font><br /><br />It's not lb/ft (pounds per foot).<br /><br />It's lbf (pounds force), to make the distinction from lbm (pounds mass).<br /><br />e.g. when using<br />F = m*a<br />for acceleration due to earth gravity, the units are either<br /><br />'Imperial':<br />lbf = lbm * 32.17 ft/s^2<br /><br />or<br /><br />'Metric':<br />N = kg * 9.807 m/s^2<br /><br />Just FYI . . . <div class="Discussion_UserSignature"> </div>

 

[chrisinastrangeland]

<i>If they can get that done in the 3-4 months they allocated in the recent update they could have a shot at September. Might also be time for some preliminary bet-hedging by the naysayers.</i><br /><br />12000:1 that Beal's dodgy decade old stand undergoes "existance failure".

 

[holmec]

DOH! Thanks for noting that. <div class="Discussion_UserSignature"> <p> </p><p><font color="#0000ff"><em>"SCE to AUX" - John Aaron, curiosity pays off</em></font></p> </div>

 

[comga]

spacester: <br />Imperial: lbf = lbm * 32.17 ft/s^2<br />or Metric: N = kg * 9.807 m/s^2<br /> <br />That's one for two. Imperial is correct, but in metric <br />1N = 1 kg*m/s^2<br />Were you thinking of 1g = 9.807 m/sec^2 ?<br /><br />

 

[windnwar]

I'd imagine that test stand has been thoroughly examined and structural tests were done long before deciding to use it for full scale tests. <br /><br />I doubt that stand is going to have any structure issues. <div class="Discussion_UserSignature"> <p> </p><p><font size="2" color="#0000ff">""Only two things are infinite, the universe and human stupidity, and I'm not sure about the former." --Albert Einstein"</font></p> </div>

 

[spacester]

Comga:<br /><br />DOH!<br /><br />Right you are, and two for two. <br /><br />I didn't want to get into the whole discussion of the definitions of unit systems, so I tried to bail out to the example of acceleration due to gravity. I ended up with something in between. Shoulda quit while I was ahead. <div class="Discussion_UserSignature"> </div>