[AR] Re: dynamic stability
- From: "Monroe L. King Jr." <monroe@xxxxxxxxxxxxxxxxxx>
- To: arocket@xxxxxxxxxxxxx
- Date: Wed, 20 Aug 2014 17:20:05 -0700
A 3 Sigma analysis is required for Class 3 rocket.
This is also a reason why large 2 stage rockets don't get flown.
Monroe
> -------- Original Message --------
> Subject: [AR] Re: dynamic stability
> From: "David W. Schultz" <david.schultz@xxxxxxxxxxxxx>
> Date: Wed, August 20, 2014 4:54 pm
> To: arocket@xxxxxxxxxxxxx
>
>
> On 08/20/2014 04:45 PM, Carl Tedesco wrote:
> > I am starting the process for getting a class 3 waiver for a rocket
> > launch. Most of the FAA required documentation looks straight forward.
> > One piece of information they require is "The dynamic stability
> > characteristics for the entire flight profile." A static stability
> > analysis is straight-forward, but I have never done a dynamic stability
> > analysis.
> >
>
> It appears that what is required is not dynamic stability but simply
> variation of CP and CG throughout the flight. At least that is what the
> example from Tripoli provides.
>
> Rocksim can plot many dynamic stability parameters if you really want to
> examine them. You probably should even if the FAA doesn't require it.
>
> --
> David W. Schultz
> http://home.earthlink.net/~david.schultz
> Returned for Regrooving
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