• 0 Posts
  • 209 Comments
Joined 1 year ago
cake
Cake day: September 14th, 2023

help-circle














  • Fermion@mander.xyztoSpaceX@sh.itjust.worksSpaceX Starship Flight 4
    link
    fedilink
    English
    arrow-up
    4
    ·
    edit-2
    6 months ago

    I find it interesting that the hot stage jettison is after the boostback burn. That implies to me that the purpose of the jettison isn’t for weight reduction. I wonder if there are aerodynamic control reasons to jettison the hot stage.

    I also wonder if the hot stage ring is expected to sustain enough damage to be a single use part anyway.


  • Plus all the helicopter pilots for remote industrial work. Have you seen the logging helicopters? There’s helicopters for inspecting and servicing electrical transmission lines. Some power companies use giant dangling saws attached to a helicopter to trim trees along lines.

    If you only included passenger aviation, I bet the count would be below average, with most fatalities being from medical conditions while on the job.





  • 4 times in the last 5 years.

    There’s a combination of flaws. The strainer basket doesn’t do a very good job keeping debris out of the impeller. There’s little separation between the steainer and the impeller. So long hairs that are partially caught in the strainer can still wrap around the impeller.

    The pump itself has a terrible impeller design. The impeller is nylon and is press fit onto a 1/8 brass rod that just has a flat ground on it, no knurling or splines. The nylon cracks easily and ends up free spinning.

    They use the same pump in loads of washer models. So yes, there’s a very large user base, but that’s a lot of people with part failures. The pump is garbage and lg should not be using it.