Den 10. jan. 2017 kl. 14.18 skrev ewkehren via time-nuts <time-nuts@febo.com>:
Do we know what the PHM development for Galileo cost?
Sent from Samsung tabletBob Camp <kb...@n1k.org> wrote:Hi
On Jan 10, 2017, at 2:45 AM, Dr. David Kirkby (Kirkby Microwave Ltd)
<drkir...@kirkbymicrowave.co.uk> wrote:
Once 9 Jan 2017 12:59, "Bob Camp" <kb...@n1k.org> wrote:
Hi
Ok here are some rough numbers:
On Jan 9, 2017, at 4:35 AM, Dr. David Kirkby (Kirkby Microwave Ltd) <
drkir...@kirkbymicrowave.co.uk> wrote:
It would be interesting to see your breakdown of the costs and man hours
for an H2 maser. I suspect that others would find cheaper/faster
solutions.
$100M for the H2
$25M for the Rb
With all due respect, and I apprectiate you have a good knowledge of this
field, but that's not a breakdown of costs or man hours I wanted to see,
but a cost which appears to be plucked from the air.
Hardly plucked from the air. The last Rb design that I was involved with was
roughly 5X that expensive.
There's a BIG difference between a volunteer effort where
* Salaries are not paid
* Items of test equipment are likely to be borrowed or people provide
access to them for no charge etc,
* Academics are likely to provide consultancy for free, in return for being
on papers published.
* Software licenses could probably be obtained free, or enough people get
trials.
That’s where the 5:1 cost reduction comes from.
compared to a commercial company building a maser where
* Salaries are paid
* All equipment is purchased new
* Bench power supplies with 3.5 digit displays are sent out for calibration
each year.
* No outside body will do anything except at a commercial rate.
* Flights are booked for meetings which could be done over the Internet.
* High end software licenses are huge.
$500M for the fountain.
But on what basis do you arrive at that figure?
The numbers that the people who have done it come up with when you talk to them.
To get sponsorship for anything remotely close to those numbers, you
need to have some massively good credentials.
Bob
Yes agreed at $500M. But someone like Tom, who does have massively good
credentials, could perhaps get $500,000, and perhaps that wisely spent
could get a fountain built. Without knowing how you arrive at $500M, it is
not possible for anyone to look at ways of shaving that cost.
This is *not* a cheap field to be doing things in ….
Bob
The Lovell Telescope at Jodrell Bank in the UK was built on a shoestring
budget. It was at the time the world's largest steerable radio telephone.
Half a century later only 2 larger ones have been built.
Maybe I am too nieve.
Dave.
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