How A Missle Guidance System Works

Discussion in 'General Discussion' started by tuckerd1, Feb 26, 2004.

  1. tuckerd1

    tuckerd1 Moderator Supporting Member

    The missile knows where it is at all times. It knows this because it knows where it isn't. By subtracting where it is from where it isn't, or where it isn't from where it is (whichever is greater), it obtains a difference, or deviation. The guidance subsystem uses deviations to generate corrective commands to drive the missile from a position where it is to a position where it isn't, and arriving at a position where it wasn't, it now is. Consequently, the position where it is, is now the position that it wasn't, and it follows that the position that it was, is now the position that it isn't.

    In the event that the position that it is in is not the position that it wasn't, the system has acquired a variation, the variation being the difference between where the missile is, and where it wasn't. If variation is considered to be a significant factor, it too may be corrected by the GEA. However, the missile must also know where it was.

    The missile guidance computer scenario works as follows. Because a variation has modified some of the information the missile has obtained, it is not sure just where it is. However, it is sure where it isn't, within reason, and it knows where it was. It now subtracts where it should be from where it wasn't, or vice-versa, and by differentiating this from the algebraic sum of where it shouldn't be, and where it was, it is able to obtain the deviation and its variation, which is called error.
  2. Marlin

    Marlin *TFF Admin Staff Chief Counselor*

    Say, What???????

  3. inplanotx

    inplanotx Active Member

    Jan 28, 2002
    Gee, thanks Tuck. Now not only does my brain hurt, but my hair hurts and my teeth itch. Many thanks for that heads up. Sorta like the guidance system on the old Terrier M and Posiden missles I used to work on for Sperry Gyroscope in NY!
  4. SouthernMoss

    SouthernMoss *Admin Tech Staff*

    Jan 1, 2003
    SW MS
    You mean you guys didn't get it? I understood every word perfectly. ;)

    LIKTOSHOOT Advanced Senior Member

    Apr 26, 2001
    Ok, but you didn`t say where it came from---------->

  6. 45Smashemflat

    45Smashemflat Active Member

    Oct 6, 2003
    I've got that as a wav file with this typical "airfarce instructor" type voice - hilarious!!!
  7. Nole

    Nole New Member

    Feb 25, 2004
    Toronto, ON- Canada
    cliff notes to original post

    1. missle needs to hit target.
    2. It knows where target is.
    3. the missles knows where its not (target)
    4. Goes there.
    5. BOOM!!!!!!!!!
  8. glocknut

    glocknut Active Member

    I believe you did understand all of that.......

    Because thats how most women talk anyway.... :D

    It would'nt suprise me one little bit if that actually is the wording in the military manual for that particular item..

  9. Remington597

    Remington597 Former Guest

    Feb 24, 2004
    Fascinating stuff, Thanks for sharing and for the detailed explanation.

  10. keppler

    keppler Member

    May 3, 2003
    Eastern Oklahoma
    I'm not sure but I may be a missile. Not sure where I am most of the time but I always know where I aint.
  11. armedandsafe

    armedandsafe Guest

    Makes sense to me. Sounds just like some of the accounting programs I've written :D:D:D

  12. tuckerd1

    tuckerd1 Moderator Supporting Member

    Now yall! That is straight fron the US Space & Missle Defense Command at Redstone Arsenal.
  13. glocknut

    glocknut Active Member

    Did any of those programs wind up at Arthur Andersons ?!!

  14. SouthernMoss

    SouthernMoss *Admin Tech Staff*

    Jan 1, 2003
    SW MS
    And just what are you implying, Pops?? :p

    Better watch out, I'll sic my fellow accountant Gunfyter on you! :D
  15. armedandsafe

    armedandsafe Guest

    I used to write software for Medicare, Medicaid and MediCal submissions for specialist Doctors. The shenanigans those guys used to try to pull would put an IRS auditor to shame.

    However devious the Doctors were, the worst part was in trying to make a dead-logical reasoning device (computer) understand and follow rules written by an army of government busy-bees. Convincing a computer to follow self cancelling and contradictory rules was as interesting as a conversation concerning relative motion theory with the Red Queen. :D

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