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Thread: Gravitational Loads

  1. #1 Gravitational Loads 
    Time Lord zinjanthropos's Avatar
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    Donít know if this belongs in Engineering forum or somewhere else. This falls in the category of stuff I didnít know. I was actually thinking about how much gravity affects our ability to wage war, like lobbing things at one another, when I stumbled across gravitational loading.

    https://www.interviewarea.com/freque...a-gravity-load

    I suppose bullets and other projectiles are live loads. I wonder if throwing crap at one another is even possible on some planets, let alone life originating, should gravity prevent them from happening. Imagine a world where the high jump record is in centimetres.

    Anyways I didnít realize how much gravity is involved when setting out to design a building let alone launch a multi ton rocket.


    All that belongs to human understanding, in this deep ignorance and obscurity, is to be skeptical, or at least cautious; and not to admit of any hypothesis, whatsoever; much less, of any which is supported by no appearance of probability...Hume
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  3. #2  
    exchemist
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    Quote Originally Posted by zinjanthropos View Post
    Don’t know if this belongs in Engineering forum or somewhere else. This falls in the category of stuff I didn’t know. I was actually thinking about how much gravity affects our ability to wage war, like lobbing things at one another, when I stumbled across gravitational loading.

    https://www.interviewarea.com/freque...a-gravity-load

    I suppose bullets and other projectiles are live loads. I wonder if throwing crap at one another is even possible on some planets, let alone life originating, should gravity prevent them from happening. Imagine a world where the high jump record is in centimetres.

    Anyways I didn’t realize how much gravity is involved when setting out to design a building let alone launch a multi ton rocket.
    I recommend reading "Mission of Gravity", by Hal Clement. This explores a world in which gravity is many times that on Earth.


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  4. #3  
    Forum Ph.D. Double Helix's Avatar
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    Quote Originally Posted by zinjanthropos View Post
    Don’t know if this belongs in Engineering forum or somewhere else. This falls in the category of stuff I didn’t know. I was actually thinking about how much gravity affects our ability to wage war, like lobbing things at one another, when I stumbled across gravitational loading.
    To be sure, gravity is essential to the most powerful weapons for waging war. The launch and direction of nuclear warheads from ICBMs requires gravity to pull them out of their sub-orbital trajectories and deliver them thousands of miles away with highly accurate targeting.

    This is dramatically demonstrated by ICBMs using multiple warheads with reentry vehicles (MIRVs). The first link below shows such a vehicle for a U.S. missile, this one capable of carrying up to ten warheads. The second link shows dummy warheads launched by a single ICBM, with the accurate targeting by multiple warheads following reentry. The final link* describes these weapons in considerable detail.

    We should all hope that gravity is not used this way in the future to settle differences between superpowers.


    https://en.wikipedia.org/wiki/File:L...eeper_MIRV.jpg


    https://en.wikipedia.org/wiki/Multip...le-testing.jpg


    "Multiple independently targetable reentry vehicle"

    * https://en.wikipedia.org/wiki/Multip...eentry_vehicle
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  5. #4  
    Time Lord zinjanthropos's Avatar
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    Quote Originally Posted by exchemist View Post

    I recommend reading "Mission of Gravity", by Hal Clement. This explores a world in which gravity is many times that on Earth.
    This site says I can borrow their one copy. However not sure if it’s legit. Anybody ever used this…
    https://freelibrary.overdrive.com/media/16016

    Never realized it before and perhaps I’m off my rocker but seems like Earth is a Goldilocks Planet should you like waging or watching war.
    All that belongs to human understanding, in this deep ignorance and obscurity, is to be skeptical, or at least cautious; and not to admit of any hypothesis, whatsoever; much less, of any which is supported by no appearance of probability...Hume
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