Re: OT: Re: [ATM] RE: Magnalium and add Null testing, here

["David Harbour" <scarab2@cox.net>]

Yes,

Thanks, all of you, for keeping me straight. I did make myself look like a
fool, didn't I, by forgetting SEVERAL other examples. One tends to think of
the dramatic.

On an ATM note, I am surprised that no one has suggested testing Cass.
secondaries with a pan of mercury or oil, by autocollimation. Surely,
amongst our giant crowd, someone remembers that both Roger Tuthill and
George Willis Ritchey both favored these methods? (Autocollimation; Ritchey
made and used large flats, child's play for him; Roger liked oil, and some
others favored mercury ("quicksilver") because of its higher reflectance).
Both would be long focus convex spherers (with a radius something over 4,000
miles) but flat enough to figure a passable convex Cass. secondary by
autocollimation.

I think the methods are written up in the old Albert Ingalls/Scientific
American three volume atm-ing books. Where have all the greyheads gone?

Well, you have the job, now, Gary: resident Aviation Historian (except for
the detailed histories of the giant rigid airships: that arena of history is
still mine alone, unless I am very much mistaken).

Even Arthur C. Clarke didn't know that the Hindenburg had a twin named the
Graf  Zeppelin II (can you believe it?)-

Dave

----- Original Message ----- 
From: "Gary Woods" <garygarlic@earthlink.net>
To: <atm@atmlist.net>
Sent: Friday, May 06, 2005 1:04 PM
Subject: Re: OT: Re: [ATM] RE: Magnalium


> On Fri, 06 May 2005 13:36:51 -0400, you wrote:
>
> >How about the Lockheed P-2V Neptune? 2 radials and two turbojets...
>
> That was my thought... we referred to takeoff and the approach of unwanted
> company as "two turning and two burning."  Dandy way to burn off excess
> fuel, too...  The main landing gear had magnesium rims; a blown tire was
> not enough to ignite, but made a heck of a show as the aircraft skidded
> down the runway...
>
> Faintly closer to topic: Plexiglas dome in overhead of flight deck big
> enough for sextant and navigator's head.  Talk about your dark skies a
> thousand miles from anything!
>
>
> Gary Woods AKA K2AHC- PGP key on request, or at
home.earthlink.net/~garygarlic
> Zone 5/6 in upstate New York, 1420' elevation. NY WO G
> _______________________________________________
> ATM mailing list http://www.atmlist.net/
>


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