APAKAH MAKSUD ASTROCOMPASS dalam CORSICA?
Astrocompass
Satu astropar adalah alat navigasi untuk menentukan arah utara sejati melalui kedudukan pelbagai badan astronomi. Terdapat keadaan tertentu apabila kompas magnet dan gyrocompasses tidak boleh dipercayai. Yang paling jelas adalah di kawasan polar, di mana daya yang dikenakan pada jarum kompas magnet hampir menegak dan gyrocompasses menjadi tidak stabil kerana putaran Bumi. Kompas magnet juga mudah terdedah kepada gangguan dari medan magnet selain Bumi, seperti yang dihasilkan oleh lambung beberapa kenderaan atau kraf logam. Sebelum kemunculan alat navigasi elektronik seperti GPS, cara yang paling boleh dipercayai untuk menentukan utara dalam keadaan sedemikian adalah melalui penggunaan astrokalar.
Definisi astrocompass dalam kamus Corsica
Takrif astrocompass dalam kamus adalah instrumen navigasi untuk memberikan galas arah dari pusat bumi kepada bintang tertentu. Ia dibawa dalam pesawat jarak jauh, kapal, kapal angkasa, dll.
CORSICA BUKU YANG BERKAIT DENGAN «ASTROCOMPASS»
Ketahui penggunaan
astrocompass dalam pilihan bibliografi berikut. Buku yang berkait dengan
astrocompass dan ekstrak ringkas dari yang sama untuk menyediakan konteks penggunaannya dalam kesusasteraan Corsica.
The Astrocompass At high latitudes, where magnetic variation can be erratic and
the angle of magnetic dip can be steep, the magnetic compass is essentially
useless. As the need for flights at high latitudes and/or near the magnetic pole, ...
Capt Arthur H. Wagner Uscg (Ret), H. Wagner, E. Braxton,
2012
2
North Star Over My Shoulder: A Flying Life
I decided to check that and got to work putting the astrocompass in its mount in
the dome. I got the hour angle and declination for Sirius and set it up on the
astrocompass. The clouds were well broken and I could see Sirius well as I
squinted ...
Bob Buck, Robert N. Buck,
2005
As far as the intercept is concerned, it will be accurate and plottable as long as
the coordinates set into the Astrocompass are within 60 to 70nm of the current fix.
Beyond this distance lock-on can be maintained, but plotting becomes a problem.
4
Dutton's Nautical Navigation
One practical method is to mount an astrocompass on or parallel to the ship's
centerline (see fig. 3407). While a Sun compass can be useful, it needs a shadow
from the Sun to give useful data. The astrocompass can be used with the Sun or ...
Benjamin Dutton, Thomas J. Cutler,
2004
5
Flying from the Black Hole: The B-52 Navigator-Bombardiers ...
... ran their own pretakeofl: checklists down in the Black Hole, including securing
both the main entry hatch and pressure bulkhead door to the bomb bay, turning
on the radar sets, and cranking up the BNS, Doppler, and astrocompass. A crew's
...
The astrocompass is an instrument designed primarily for the determination of
the true heading of an aircraft. When the exact true heading is known, the local
magnetic variation can be applied to obtain the magnetic heading. This value can
be ...
Philip Van Horn Weems,
1955
12.13 AN ASTROCOMPASS. The astrocompass is a celestial compass used
principally to check the accuracy of the magnetic compass. The bearing of any
celestial body can be computed for a given time from any point on earth. The
actual ...
8
Perspectives in Marine Biology
In use, the underwater polarimeter was mounted, as shown in figure 7, on the
base of an astrocompass, which provided convenient vertical reference and
calibrated adjustment in azimuth and elevation. This in turn was clamped to a
tripod, ...
Adriano A. Buzzati-Traverso,
1958
The basic course- selection system during flights in the Antarctic was the astro-
compass; in all cases when, for some reason, it became impossible to navigate
the plane by astrocompass, navigators preferred to use course- selection
systems ...
10
Marine and Air Navigation
No index to read it in this way is provided, because measurement of the azimuth
is not needed, being merely a means to an end (the determination of true
heading) which with this instrument is directly obtained. The astrocompass is
closely ...
John Quincy Stewart, Newton Lacy Pierce,
1944
BARANGAN BERITA YANG TERMASUK TERMA «ASTROCOMPASS»
Ketahui apa yang diterbitkan oleh akhbar nasional dan antarabangsa dan cara istilah
astrocompass digunakan dalam konteks perkara berita berikut.
Academic works on restoring iconic 1950s Soviet jetliner… in her …
... from south to north, from east to west. I almost gave up the idea to find an astrocompass but found it in a second-hand shop in St Petersburg'. «The Siberian Times, Jun 15»
Omamas poultry project improves lives
Campbell started the project at his residence with only 200 Australian Astrocompass layers. These are specialised layers which he imported at ... «Namibian, Jan 15»
Earning to Sail, Sailing to Earn: Part II
I used to swing compasses (with the WWII Astrocompass my father passed on to me) and adjust sextants—neither of which will make you rich ... «All At Sea, Mei 13»
Keith Greenaway was one of the world's leading authorities on Arctic …
This technique was limited if the astrocompass references needed to operate the gyro steering could not be taken because of twilight or ... «Globe and Mail, Mei 10»