Everything posted by broncepulido
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Torpedo acquisition range
And what's now, from some years ago, the rule to determine the Hit Points infringed by a Torpedo Warhead ? My most modern paper rules, High Tide, states the same old reason of: DC/Influence mines = Square root (warhead weight) Torpedo/Mine contact Hit = warhead weight/4 Torpedo Influence Hit = warhead wt/2 DE Torpedo Warheads = warhead wt/2
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Libyan protests
At last some real news and changes, and assestment of the revolutionary forces: http://www.npr.org/2011/02/24/134034855/In...enghazi?ps=cprs Sirte is half-way between Tripoli and Benghazi. Could be Tripoli a city too far ?
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Libyan protests
For a Civil War we need two armed sides and with fighting spirit. I fear the African mercenaries had more of both than the Libyan people. But it's only a very subjetive view. Today was another day of impasse, perhaps tomorrow we will see some real news and progressions of one or other side ...
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Libyan protests
More: (The Harpoon touch ) And sadly supporting my previous viewpoint, I fear: http://www.telegraph.co.uk/news/worldnews/...ard-fight.html#
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Libyan protests
Yes Silent Hunter, as in every dictatorship, in Libya the news and the reporters are mainly banned. But in this moment I think we are spectators of a media war. The news are very scarce, and for me, if they are not a clear victory of the opossition in the next 48 hours (my intuitive limit is the next friday afternoon), Gadaffi will keep in charge (and when he dies, his sons ....). About the media wars: http://www.nytimes.com/2011/02/24/world/mi...t-m24libya.html My idea is some media, as Al Jazeera, are doctoring news for support the opossition and the world opinion against Gadaffi, but they are not "real" news, I fear it's only a induced collective delusion, and the opossition to Gadaffi it's not improving his factual position for overthrow Gadaffi by the force (no doubts, for me Gadaffi is a narcissistic mad man, a proved terrorist, and the worst type of dictator, no doubting in kill openly his own people. But history tells us, as in the Tiananmen Square case, a dictatorship can prevail for years after shot openly against his own people in the streets).
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Blackfive - The US and the Revolutions
I think Mr. Obama has other top trascendent priorities on this time : http://www.google.com/hostednews/ap/articl...42108243da56a3c
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Libyan protests
For me, is Aljazeera and the Islamist who are staging the unrest in the Muslim countries, keeping a very low profile for not scare the Western countries, as evidence is the absence of other actors (I only know US, UE and Israel are not staging the unrest. And my Moroccan friends/contacts says clearly the organizers are the Islamist). I think when most time is passing, most probabilities Gadaffi keeps in power. Aljazeera is pressing for the overthrowing of Gadaffi and forcing the news reports to say so, but clearly not a lot of real news today: http://english.aljazeera.net/news/africa/2...125540203.html# Al Jazeera informing about the Libya crisis in a blog ... from Qatar: http://blogs.aljazeera.net/africa/2011/02/...g-libya-feb-23# But, I insist, they are not real news, and without changes in the Libyan internal status-quo Gaddafi will keep in power, massacres or not massacres aside, the important issue (not for the victims and his relatives, of course) is the outcome the next few hours. Mubaraks resign to prevent a bloodbath in Egypt, but we known the inhuman nature of Gaddafi is from another nature ... Meanwhile, in Yemen .... http://english.aljazeera.net/news/middleea...112793183.html#
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Libyan protests
More real news, but I doubt Ghadaffi is vanqished http://us.mobile.reuters.com/article/idUSL...20110223?ca=rdt
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Libyan protests
At last a first hand recount about what's going in Libya and how the info are transmited: http://www.time.com/time/world/article/0,8...rss-mostpopular
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Libyan protests
Good done, thanks
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Libyan protests
Yes, all the yesterday unconceivable fears are confirmed today But my main fear is ever Morocco ...
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Libyan protests
Yes ... I forget that because it was obviously a full pod, and that forced my oblivion, but it think I must wrote also that detail I think that detail is clearly the first actual proof of ordered attack to civilians with warplanes, but I don't see mention of it in the media. And it seems the events are worsening in Libya this night ...
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Libyan protests
The person who I study about security matters now remembers me Libya is member of the United Nations Human Rights Council to 2013 (With China, Cuba, Russia, Bahrain, Saudi Arabia, Pakistan and other good folks): http://en.wikipedia.org/wiki/United_Nation..._Rights_Council
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Information Dissemination - Iranian Navy Set to Cross Suez Canal
Looking for the heavy water bomb in a merchant ship. Only finded this nostalgic article in Life magazine by the same Vannevar Bush about atomic bombs in merchant ships: http://books.google.co.uk/books?id=90wEAAA...mp;q&f=fals
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Information Dissemination - Iranian Navy Set to Cross Suez Canal
I doubt the mission task could be to sunk the transport ship in front of the Israeli coast and later to detonate the ship, configured as a dirty heavy water bomb (a ship configured as a heavy water bomb and detonated below the sea in front of a enemy country and obliterate it with a tsunami was an idea exposed in Popular Mechanics in the 1960s, but I don't find now the reference).
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Libyan protests
Other Harpoon data: The Mirage F1 were configured for CAS or similar, with two unguided rocket pods in the wing pylons (probably Matra 155 with 18x68mm unguided rockets), not as usual without live weapons (and remember the Mirage F1 has also 2x30mm DEFA 553 internal guns, with 135 rpg, very good for strafing ... against hardened targets). The Libyan Mirage F1 usually are based at Okba Ibn Nafa, some 25 nm of Tripoli and some 246 nm of Malta, in 32° 28' 24N 11° 53' 52E), and the range of the Mirage F1 without external tanks is some 1160 nm, perhaps some 450 nm with the rockets pods and half internal fuel.
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Libyan protests
Now at home. The Smartphone is a good invention, keeps me in touch constantly with the news reports, but only now in the 15" I see clearly in the video of Malta Star (thanks, Silent Hunter) the Mirage F1 were configured for CAS or similar, with two unguided rocket pods in the wing pylons, not as usual without live weapons. Also, without external fuel tanks, not usual in the not very long-ranged Mirage F1. As consequence, I think the Lybian pilots actually were ordened for execute air attacks against the demostrators. Really the last 5 hours I don't believe really Ghadaffi had ordered fight the protesters with combat planes. Now I see my perception was erroneous (they are also some reports about warships firing on Tripoli from the littoral).
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Libyan protests
Working on a scenario relative to the recent devolepements in North Africa from the last friday, but I fear the events are faster than my scenario building capabilities
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Torpedo acquisition range
By the way, what is the significance of the adquisition range values in straight-running torpedoes ?
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Torpedo acquisition range
I think it can be a good idea in more modern torpedoes, advances in digital procesing of the signal and similar facts. But we can remember also the failures in torpedoes fuzes from the WWII start to mid-war, both British, German and US, in a apparently mature technology from 1918 (Well, now remember it was the change from impact to diverse influence fuzes the problem). I doubt, as example, the adquisition range keeps on the same 4000 yards in all the Mk48 iterations on forty years, from the early Mk48 Mod 0 (1972) models to the Mk48 Mod7 CBASS (2006) variants. http://www.navweaps.com/Weapons/WTUS_PostWWII.htm
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Airfield damage/repair brainstorm
Thanks for the links, PAK. The best valued finded in the text, about the 1973 Yom Kippur War: The Israeli air base of Bir Gifgafa needs 4 hours to repair 5 runway craters, Some other simplified translations from the Portuguese language link: IWW: First recorded strike on an air base on 24 August 1914, a British plane destroying with one bomb three German airplanes in a grass strip in Lessines. Progressive introduction of air defences, dispersion sites, camouflage, fake bases and plane decoys, reinforced or subterraneous hangars and installations (first air base installations were mere tents), and searchlights. IIWW: Battle of Britain 1940: Great number of planes destroyed on the ground by the Germans using blitz-krieg tactics in Poland, Norway and France campaigns, but the Luftwaffe attack against air bases not was effective because: small bombs and small bomb loads, effective air defences, a lot of small bases, dispersion sites, and simple grass fields. IIWW: A air base can be neutralized, but only by continous attacks and only for some hours. As example, Iwo Jima 1945: in a island only 7 Km long X 4 Km wide, some ten weeks before the landing, on 16 February 1945, the air base was attacked by 6.800 bomb tons, 203 guns shots of 406 mm, 6.472 of 203 mm and 15.251 of 155 mm, keeping the base unoperative for only some hours. Craters are repared easily, but continuos attacks precludes effective use of air bases. - Korean War: New jets, bases with hard runways are required. F-80 Shooting Star forced to operations from Japan (only 4 bases capable of fast jets operations in Japan) after the occupation by North Korean forces of the Kimpo e Suwon bases, only bases capables of operate fast jets. In Pohang e Taegu were used Perforated Steel Planking (PSP) on the runways, but late was observed than only F-51 Mustang was operable in those surfaces. One F-51 operating from Taegu was equivalent to 4xF-80 operating from Kyushu for close air support. North Korean bases destroyed early in the war, but MiG operating from China sanctuaries. Damage by 100 lb bomb of easy reparation, the next attacks were with at least 500 lb bombs. Big craters are of most difficult reparation, but repair capability and technics improving in the time, with repair teams each time more efficient. For closing an air bases frequent attacks and reconnaisance are required. - 1956 Suez Campaign: Airplanes are unprotected in bases without HAS. - 1967 Six Days War: SA-2 uneffective at low height, none Israeli fighter shoot-down by SA-2. Used Dibber, Israeli rocket-assisted anti-runway penetrating bomb, with retarded blast. Sinai air bases not attacked by Dibber, for not preventing his use after capture by Israeli forces. - 1973 Arab-Israeli War: Egypt equipped with 1.000 HAS, Israel only capable of destroy one. Only 22 arab planes destroyed in the ground. 500 lb bombs and Maverick uncapables of destroy HAS. Between 9 and 12 hours the Arab bases were out of service after each attack. When the war progress less surprise, better defences and less success in the air base attacks. Akotmiya air base out of action 2 days because continued attacks, Mansura air base closed for 6 days with 7 MiG-21 destroyed on the ground. F-4E Phantom attacking air bases on 3 waves, each of 8-16 planes. First wave atracting enemy fighters far of the target, second wave attacking enemy fighter over the target, third wave attacking target, first the air defences with dive tossing bombing or cluster bombs, later keeping-on above the target protecting the last attackers, attacking with dumb bombs. The Israeli air base of Bir Gifgafa needs 4 hours to repair 5 runway craters, and control tower destroyed. Ramat David attacked by Syria with FROG rockets, with mixed success. Failed commandoes incursions in Mi-8 against Redfin, Ras Sudar e Tasa. - Vietnam: Between 1964 and 1973 NVA and Viet-cong attacks American air bases 475 times destroying 99 American or South Vietnamese and damaging 1.170. Other 375 destroyed in attacks against forward or small air bases. - Vietnam: Four airbases capables of operate jet fighters in North Vietnam (Phuc Yen, Gia Lam, Kep and Kien An). North Vietnam using China as sanctuary and dispersion site. Air bases radar placed some 5-10km from the bases. POL and ammo depots some 10 Km from the bases. Some 70.000 concrete blocks deployed in the bases for fast repairs. The blocks were 1.8x1.8 meters and 20 cm thin. Other blocks 1x1 meter and 16 cm thin. 150 specialized repair troops in each base. Aircraft shelters between 500 meters or 2-3 Km from the runways/taxiways. Taxiways sometimes used as runways. Mi-6 helicopters uses for moving MIGs from the bases to cave shelters 30 Km away, where they were rearmed and mantained, and after returned to the bases from the next exit. - Vietnam 1967: Kien An attacked 25 times, Hoa Lac 33 times, Kep 29 times and Noi Bai 9 times. Employing time-delayed bombs and mines. One time Kep air base was repaired the same night. As maximum delay, the runways were repaired in 2 days. In 50% of the strikes bases out of operation from 5 hours to some days. In 40% of the strikes bombs impacted in the base, in 30% in the runway, and in 10% in the taxiways. Four bases were out of operation 36 times, on 120 days on a 15 months period. - Chipre 1974: Nicosia airport needs 5 weeks in peacetime to repair runway and taxiways. - Falklands 1982: bad accuracy with 1000 lb bombs in the Vulcan attacks against Port Stanley. Only 1 bomb in the runway, preventing his use for fast jets, but not for Pucaras and Hercules, more by fear of loss the fast jets than because real damage in the runway. Limited Argentina repair capability. - El Dorado Canyon Libya 1986: a number of undispersed planes destroyed. Benina airfield keeps his runway with light in the same attack time. - Operation Epervier Chad 1986: French strike with 16 Jaguar using Durandal bombs. Later a Libyan radar destroyed using Martel missiles. - Panama 1989: covert SEAL teams with M-82 heavy sniper rifles near the runways and taxiways preventing the take-off of planes, including the Noriega personal plane. - In Jugoslavia 1999 each air base received some 600-700 impacts in some 50 strikes, basically Mk82 dumb bombs. Also unexploted precision bombs finded in the runways after the war. In the Obvra Air Base a B-2A with only a past bombed the two runways with 3xJDAM each, cutting each runway in four segments. - 66 Air Bases in Iraq in 1991. Those of the Project 202 from 1975, and built from mid-1980s, with very reinforced HAS, and with very redundant runways and taxiways, and with emergency runways capables of Il-76 Candid. Allied forces targeted initially the taxiways. Very professional Iraqi repair teams, not attacked by Allied forces (but at the war end the Iraqi repair capability was reduced in 50%). Iraqi repair teams painting fake damage and craters with papier-mache. Taxiways damaged by cluster bombs (Tornado equipped with JP233 is named) repaired in 4-6 hours. Durandal in the USAF inventory but not employed. Cluster bomb in taxiways and runways satured the Iraqi repair capability. When USMC re-takes Kuwait Airport, a lot of unexploted allied submunition of cluster bombs prevent his use. In a second phase, GBU-24 used against runways, and 594 HAS destroyed by the Allied forces with guided bombs, with 10-20 destroyed each night. First attack packs were of 6 planes, later of 20-24 planes. 31 CALCM used against air bases, later B-52 attacking with 1000 lb dumb bombs and cluster bombs. - In Iraq 2003 Talil Air Base was repaired in 3 days after previous Iraqi sabotage and occupation by US forces. - The Iraqi forces keep the air bases near constantly operational in 1991, someted to contious allied bombing. I've not idea about if those facts are historical or not, it's only direct translation of relevant paragraphs.
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Libyan protests
Perhaps this article can provide some insight: http://defense-update.com/wp/20110220_behi...fense+Update%29 I'm particulary thinking on our neighbor Morocco: http://www.bbc.co.uk/news/world-africa-12518116
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Minesweeping
That remembers me about my old efforts, in some DB, of implement drifting mines. They are modelled as very slow long range straight-running torpedoes (range=54 nm (I don't remember as I obtain this range, it was something relative to endurance), speed=6 (for chase at least a ship at slow speed), and PH very low, between 2-6%), launched by mine capable ships, pretending to make hazardous hits. Yes, I known the historical outcome of launch drifting mines in combat is near none, but it's only another idea ...
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Blackfive - Best sign in Madison
For years thinking the same thing here.
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LHD for Australia progress
Work in progress in the two new LHD for Australia based in the Spanish Juan Carlos I design: Canberra launched on 17 February 2011: http://www.infodefensa.com/?noticia=el-lhd...-de-fene-ferrol Adelaide keel laid-down on 18 February 2011 in the same slip: http://www.infodefensa.com/?noticia=navant...-para-australia Asked the project director Jorge Lopez Novo about the Russian purchase of the French Mistral design, his answer was: " ... probably Russian Navy was looking for smaller ships than Juan Carlos I",