I missed the last paragraph.... Rob K
.....There was however an added complication involved in navigating successfully to Dresden by Loran-because of the curvature of the earth the beams would probably not be picked up below nineteen thousand feet. The Master Bomber and his eight Marker Mosquitoes would have to endure a painful switch back dive from nineteen thousand feet to their normal marking altitude of less than one thousand feet within four or five minutes if they were to arrive at the target area on time. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Rob Kimberley Sent: 15 July 2008 18:45 To: 'Discussion of precise time and frequency measurement' Subject: Re: [time-nuts] More on Old Loran I found the following extract in David Irving's book "Apocalypse" about the bombing of Dresden. Interesting stuff..... Rob Kimberley ....The highest precision in navigation was required; only Loran could provide this. The Royal Air Force's most up-to-date piece of electronic long-range navigation equipment, installed only in a few aircraft, Loran was to be used to make the initial fix on the target area, and Smith was thereafter to rely on low-level visual marking for the attack. Loran, a bulky piece of equipment housed in several metal containers strapped into the already cramped cockpit of nine Mosquito high-speed bombers, was originally designed to be installed in Lancasters and used in long-range attacks in the Pacific theatre of the war. Basically an upgrade of the Gee radio-beam navigation device, which spun an invisible web of beams across the Western European ether, Loran did not suffer from the shortcomings of Gee which permitted its use only within relatively short distances of the transmitter chains. Using reflected radio waves from the 'E'-layer, Loran had a range of some fifteen hundred miles; but the use of the 'E'-layers limited its applicability to night flying only. Before February the R.A.F. had never relied on it for an operation. The crews of the nine Mosquito aircraft fitted with Loran were quickly trained in the operation of their equipment; Bomber Command's navigation chiefs crossed their fingers and hoped that on the night the gear would work perfectly; the English Gee chain's radio beams, even when not jammed by the enemy, petered out some miles west of Dresden; the signals picked up from the mobile Gee transmitters moving up behind the Allied lines were unreliable and even they did not extend to Dresden, the target city. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Hal Murray Sent: 14 July 2008 19:46 To: [email protected] Subject: [time-nuts] More on Old Loran Lots of good info on hyperbolic navigation aids http://jproc.ca/hyperbolic/index.html In particular, this is a nice description of Loran A http://jproc.ca/hyperbolic/loran_a.html Here is info on how a Phantastron works. It may not make much sense if you don't know how tubes work. http://www.radarpages.co.uk/theory/ap3302/sec2/ch8/sec2ch8p137.htm (Figure 3 is on the next page. Follow the link at the bottom.) -- These are my opinions, not necessarily my employer's. I hate spam. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
