[AR] Re: FTS (was Re: $1M prize for a student rocket reaching 100 km)
- From: Henry Spencer <hspencer@xxxxxxxxxxxxx>
- To: Arocket List <arocket@xxxxxxxxxxxxx>
- Date: Sun, 16 Sep 2018 13:42:22 -0400 (EDT)
On Sat, 15 Sep 2018, Ben Brockert wrote:
If that means it would be getting its position data from the same GPS
system the control system is using, that would worry me. For safety, you
ought to have dissimilar data sources -- ideally, one GPS and one non-GPS
source, but at the very least, two separate GPS receivers from two
different manufacturers.
I don't agree, and the FAA hasn't mandated it.
I think they eventually will.
"For most applications, a minimum of two independent tracking sources is
required to assure public safety." -- Global Positioning and Inertial
Measurements Range Safety Tracking Systems Commonality Standard, RCC
Standard 324-11, 2011 (page 1-3).
Henry
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