Motor Ignition after Cold Launch

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Motor Ignition after Cold Launch

Postby Weapons Loader on Wed Mar 11, 2009 7:53 am

How did PK know when to ignite its motor once it was ejected from the silo? :?: I'm gonna guess it was a timer, altimeter, or accelerometer or some kind?
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Re: Motor Ignition after Cold Launch

Postby hockey85 on Sun Mar 29, 2009 11:05 pm

I've heard somewhere that the 1st stage ignited once the missile sensed it was slowing down in upward motion and was about to fall backwards.
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Re: Motor Ignition after Cold Launch

Postby DeuceDeputy on Mon Mar 30, 2009 3:54 pm

Agree with Cory. It's my understanding that it had an accelerometer that measured it's upward velocity. When it hit 0, the first stage motor ignited. Check out the videos online and you can see it ignite just before it starts to fall backwards.
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Re: Motor Ignition after Cold Launch

Postby Nou on Wed May 13, 2009 5:13 am

Thats how Trident/Poseiden/Polaris work/worked as well.

I think the Russian cold launch systems work on accelerometers too... probably the easiest way to do it.
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Re: Motor Ignition after Cold Launch

Postby Nou on Wed May 13, 2009 5:13 am

Thats how Trident/Poseiden/Polaris work/worked as well.

I think the Russian cold launch systems work on accelerometers too... probably the easiest way to do it.
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