[AR] Re: Flight Computer
- From: David Weinshenker <daze39@xxxxxxxxxxxxx>
- To: arocket@xxxxxxxxxxxxx
- Date: Sat, 26 Dec 2015 12:11:32 -0800
On 12/26/2015 10:55 AM, Paul Breed wrote:
The issue is likely to be sensors not CPU.
For small vehicles the moments of inertia are small and
sensor delays that would be unnoticeable on a Saturn 5 will make an 8 ft
rocket uncontrollable.
Which might be an argument for some sort of hardware control loop
at the hardware-facing end, with at least (for example) basic
rate-stabilizing feedback handled "down in the op-amp level",
rather than going through the "digitize and calculate" of the
software system (which could handle higher-level lower-frequency
tasks like mode switching and loop lock/unlock commands if required.)
-dave w
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