GlenTheMachine

68 ms·

1. 691.▲
   by GlenTheMachine 9y ago

   There's another reason the Ares 1 doesn't have fins, which doesn't seem to be discussed in the OP, namely: big rockets have really thick boundary layers. The boundary layer is the layer of air that a vehicle (rocket, airplane
2. 692.▲
   Akin's Laws of Spacecraft Design(spacecraft.ssl.umd.edu)

   1 points by GlenTheMachine 9y ago|0 comments
3. 693.▲
   by GlenTheMachine 9y ago

   I am the source of one of Akin's Laws. 37. (Henshaw's Law) One key to success in a mission is establishing clear lines of blame.
4. 694.▲
   by GlenTheMachine 9y ago

   Correct. Antebellum houses are surprisingly comfortable. The ceilings are twelve feet high, and the houses are one room wide with massive windows on both sides. And the walls are often brick, stone, and/or plaster, which gets cool at n
5. 695.▲
   by GlenTheMachine 9y ago

   I grew up in a farming family, and I run a hobby sheep farm. Supplementing your food supply with a family garden isn't that difficult. Completely supplying yourself and your family with enough calories to live via farming is enormously
6. 696.▲
   by GlenTheMachine 9y ago

   I have never been happier than I was in grad school (the Space Systems Lab at the University of Maryland). Which might sound surprising, given the pay and work hours... but there's a lot to be said for working with a group of people yo
7. 697.▲
   by GlenTheMachine 9y ago

   Thanks for this. Beautiful font.
8. 698.▲
   by GlenTheMachine 9y ago

   ...and Steve Jobs.
9. 699.▲
   by GlenTheMachine 9y ago

   Of course, if they bought Be and not NeXT (which is consistently mis-capitalized), they wouldn't have gotten Jobs back. Apple very nearly went under before Jobs brought it back from the brink; had BeOS become the next MacOS, there may
10. 700.▲
    by GlenTheMachine 9y ago

    Rockets do actually heat in flight. But their launch profile is carefully chosen to keep the heating to managable levels. Liquid fuel rockets typically throttle down somewhere around a minute after launch, at a point called "max-Q&quot
11. 701.▲
    by GlenTheMachine 9y ago

    In grad school my advisor (who was teaching "Launch and Entry Systems") told us this story. A few lectures later he went over rail guns as a launch system, and mentioned that by his back-of-the-envelope calculations, a slug of tit
12. 702.▲
    by GlenTheMachine 9y ago

    For pocketknives, some standard quality makers are Spyderco, Benchmade, CRKT, Kershaw/Zero Tolerance, and Buck. Prices really run the gamit, a low end Buck or CRKT will be $20 but will have lower quality steel that will dull rapidly. A
13. 703.▲
    by GlenTheMachine 9y ago

    Lost my dad three years ago. Still find myself having conversations with him in my head. This isn't something you get over. You just deal with it, a day at a time, and eventually you will find that a year has gone by, then two, and at