desert expeditions - tom sheppard
magari lo sapete già, ma da questo link potete scaricare il pdf di questa guida vecchia ma interessante. http://www.oasisphoto.com/docs/Desert%20Expeditions.pdf
se qualcuno avesse invece il libro "Tom Sheppard's Vehicle-dependent Expedition Guide"......
Ciao
LORENZO DEF 110 TD4 "ZEBRA2" -


Defender 110 300Tdi '98 150kkm
"E sempre, sopra di noi, il grande cielo africano..." - N.Cirani
"Un viaggio di mille leghe deve cominciare con un solo passo" Lao Tze
Disco II Td5 MY 00
(anche perchè con l'inglese non è che ci vada molto d'accordo....).
Sò più o meno cos'è una bussola solare solo che se non sbaglio và traguardata mettendosi di fronte al sole (o di spalle o di traverso, ora non ricordo).
Su un'auto in movimento mi pare di difficile utilizzo.
Ciao
Roberto
[url="http://www.globalsecurity.org/military/library/policy/army/accp/in0828/le3.htm#fig3-3"]Link[/url]
[url="http://blindkat.hegewisch.net/lrdg/lrdgpatrol.html"]Link[/url]
"Sun Compass
Sun Compasses were developed earlier in the 20th Century and used in aircraft and on ships. When an ordinary magnetic compass is placed next to a large metal mass it doesn't always point to magnetic north, this is a problem in ships and aircraft. There are various ways to compensate for this effect used in ships, but it was found that these methods were unsatisfactory when used in aircraft, and so the sun compass was developed. The compass is not magnetic at all, when you align it with the sun it points north, (the compass contains a clock which enable it to track the sun across the sky). There is an entire chapter on this device in "From Lodestone to Gyrocompass" by H Hitchens and W. May, published by Hutchinson.
Because there are few features to get bearings from in the Desert, the LRDG pioneered the use of Sun Compasses for navigating the arid regions. One of the chief duties of the LRDG was to act as pathfinders for larger units. They also trained navigators from various units in the art of navigating the desert with a sun compass
(In fact British Soldiers often referred to being in the desert as "on the blue" a term comparing the desert to the featureless ocean.)
"
Cioè? ha un orologio sotto che gira?
Ciao
Roberto
[url="http://www.lrdg.de/vehicles4.htm"]Link[/url]
Ciao
Roberto

“…vivi, corri per qualcosa, corri per un motivo...
Che sia la liberta` di volare o solo per sentirti vivo...”