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Poslao: 03 Okt 2014 18:05
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- Pridružio: 09 Jan 2012
- Poruke: 38397
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moždaćemo imati partner pre partnera vojna parada u beogradu aj da vidimo šta će to sve novo da bude a što već nije viđeno 
Најновија опрема и оружје на војној паради
[Link mogu videti samo ulogovani korisnici]
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Registruj se da bi učestvovao u diskusiji. Registrovanim korisnicima se NE prikazuju reklame unutar poruka.
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Poslao: 19 Okt 2014 15:40
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- Gavrilo Milentijević
- Komandir stanice milicije Gornje Polje
- Pridružio: 12 Feb 2005
- Poruke: 37289
- Gde živiš: ovalni kabinet
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General Dynamics Corp. uskoro počinje isporuku prve tranše ultra lakih terenskih vozila za SOCOM (U.S. Special Operations Command) specijalno konstruisanih za prevoz sedam teško naoružanih vojnika. Vozilo nazvano Flyer 72 prilagođeno je za transport letelicama (avionima i helikopterima) a nastalo je na bazi dobro poznatog Hamera.
Procena je da će svako vozilo po komadu koštati čak 432,307 $ što za 1300 poručenih vozila iznosi 562 milliona dolara.
 [Link mogu videti samo ulogovani korisnici]
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Poslao: 19 Okt 2014 20:10
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- acatomic
- Legendarni građanin
- Pridružio: 10 Jun 2008
- Poruke: 4604
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Sa OTEH-2014
Citat:ANALYSIS OF ACOUSTIC CLOAKS FOR ANTI-SONAR CAMOUFLAGE BASED ON LOCAL RESONANCE IN ACOUSTIC METAMATERIALS
Non-visual camouflage plays a significant role in the art of military deception. One of the fields of interest is auditory camouflage, where the goal is to remove the acoustic signature of an object, whether it is generated by the object itself or scattered from a surveillance device like sonar. A recently proposed approach to auditory camouflage is acoustic cloaking, where the object is made 'invisible' in acoustic sense by surrounding it with a cloak of acoustic metamaterial. Acoustic metamaterial is basically an artificial structure tailored to enable control of acoustic wave dispersion through Bragg scattering, where the features of the structure have subwavelength dimensions. The operation of an acoustic cloak is based on negative effective dynamic mass and bulk modulus which can be obtained by local resonances. This leads to a possibility to fully tailor the path of acoustic waves (infrasound, audible waves or ultrasound) around the camouflaged object, effectively enabling one to make waves avoid the object and render it invisible. In this contribution we perform a full finite element modeling of the elements of an acoustic cloak, analyze it and consider coordinate transformation necessary to ensure acoustic concealment of a macroscopic object. We investigated spatial distribution of acoustic waves for two different scatterers, one of them being a cylindrical object with circular basis, another one a cylinder with elliptical basis. All our calculations were performed for a realistic sea water medium, modeled by an empirical formula. We considered the frequency dispersion of the acoustic field in different spectral ranges, from infrasound to audible frequencies. For elliptic cloaks we applied a very simple approach that nevertheless furnished better acoustic cloaking than some more complex layered profiles previously published.
[Link mogu videti samo ulogovani korisnici]
Citat: MULTIBEAM RECEIVING ANTENNA AT THE MISSILE LATERAL STRUCTURE
In this paper linear array antenna mounted along the missile body is presented. Linear array consists of patch type radiating elements. Antenna is able to operate at lower frequency (L or S band) and could be compatible with long range acquisition radars. Dimensions of linear antenna array are not related with missile diameter and linear array could be position at the missile with small diameter. Linear array, collinear with antenna body forms many simultaneous beams, narrow in the planes collinear to missile and wide in the plane orthogonal to missile. Depending of element phasing, radiation pattern could be formed in the form of different conical shapes with apex at the missile longitudinal axes. It means that array simultaneously receive signals from almost full sphere. Array has maximum gain at the plane orthogonal to missile and it can be decreased four dB at the cone angle of 70 degree.
[Link mogu videti samo ulogovani korisnici]
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Poslao: 20 Okt 2014 12:42
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offline
- Gavrilo Milentijević
- Komandir stanice milicije Gornje Polje
- Pridružio: 12 Feb 2005
- Poruke: 37289
- Gde živiš: ovalni kabinet
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Etiopija se naoružava
Citat:Ethiopia; Arms purchases in 2013
Saturday, 18 October 2014 04:23
News - Africa
Ethiopian Army received 29 T-72s and 10 000 submachineguns from the Ukraine while the EAF received surplus 12 MiG-23s from Bulgaria. These were airframes with zero hours left on them and, as they were dismantled and without armament, they will probably be used as a source of spare parts to keep Ethiopia’s other MiG-23s flying. In addition, EAF further bolstered its Air Force with the delivery of 12 Soviet-era Mi-24s from Hungary.
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Poslao: 13 Nov 2014 13:07
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offline
- jastreb1234
- Ugledni građanin
- Pridružio: 09 Nov 2014
- Poruke: 461
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Pakistan Successfully Test-Fires Shaheen-II (Hatf-VI) Missile - See more at: [Link mogu videti samo ulogovani korisnici]
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Poslao: 14 Nov 2014 12:16
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offline
- jastreb1234
- Ugledni građanin
- Pridružio: 09 Nov 2014
- Poruke: 461
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India successfully testfires nuke-capable Prithvi-II missile
[Link mogu videti samo ulogovani korisnici]
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Poslao: 25 Nov 2014 20:41
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- Pera Ždera
- Legendarni građanin
- Pridružio: 19 Sep 2013
- Poruke: 3395
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" Rusi lansirali "ubicu satelita"
Zapadni vojni izvori tvrde da je Rusija vratila u kosmos "ubicu satelita", odnosno da je obnovila program od koga je odustala nakon završetka "Hladnog rata". "
[Link mogu videti samo ulogovani korisnici]
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Poslao: 03 Dec 2014 07:31
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offline
- AS
- Građanin
- Pridružio: 30 Avg 2014
- Poruke: 275
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Napisano: 28 Nov 2014 20:14
Uspesno lansiranje "Bulave" sa podmornice u Barencovom moru.
m.ria.ru/defense_safety/20141128/1035678410.html
Dopuna: 03 Dec 2014 7:31
Koncern "Kalasnjikov" sledece godine predstavlja novo oruzje.
m.ria.ru/defense_safety/20141202/1036184751.html
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