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Fifth generation of submarines - Class TR 1700-1984 Schweizer 300C Helicopter

profile of a submarine type TR 1700 where you can appreciate their excellent design hydrodynamic (Art: Adrian Duenas / Source: www.histarmar.com) Cross section a TR 1700 which identifies the most important sections as part of its propulsion system (Art: Adrian Duenas / Source: www.histarmar.com)

The acquisition of fifth-generation submarines represented a quantum leap important for Armada Argentina and was part of a project which gave a superlative importance to the Submarine Force within the framework of naval weapon. The original plan conceived to complement the recently acquired IKL Type 209 submarines with 6 (six) modern oceanic units of the TR 1700 Nordseewerke Thyssen, whose hull design specifications were made anticipating potential future changes in their propulsion, from diesel-electric nuclear.

Photo 1. The ARA San Juan (S-42) moored at the Base Naval Mar del Plata (BNMP) in March 2007 (Author: Martin Otero / Source: www.fuerzanaval.com)

Of the six submarines original project, two would be built in Germany and the remaining four in Argentina in Astillero Domecq Garcia. Political changes, the cyclical economic crises, and the apathy and lack of strategic vision by successive governments, made the original project remain unfinished.

Photo 2. The ARA Santa Cruz reveals its clean lines in this view from the stern (Author: Carlos A Damiel - Facebook "crew of the submarine ARA Santa Cruz ...")

were built only two (2) submarine from Germany , dubbed ARA Santa Cruz (S-41) ARA and San Juan (S-42) , was left unfinished in the projected Argentine shipyards ARA Santa Fe (S-43) and ARA Santiago del Estero (S-44) that were completed in 52 and 30% respectively. Closure and sale of the shipyard in 1996 (Carlos S. Menem administration) the latter were cannibalized for spare parts serve to both TR 1700 on active duty, as well as different equipment for them come from Germany.

Photo 3. ARA beautiful shot of Santa Cruz (S-41) sailing towards the port of Ushuaia, Tierra del Fuego (Added by AIMARA in forum www.zonamilitar.com.ar)

oceanic submarine designed as attack the TR 1700, equipped with diesel-electric propulsion and snorkel, it is especially suitable for raids against both surface ships and submarines against, and also for mining operations. His helmet, special hydrodynamic design, features a low profile and free of bumps, which allows optimal displacement under the sea surface, while it becomes quieter and less detectable by sonar.

Photo 4. The masts of the Argentine TR 1700 show a curious camouflage, in this case it is ARA Santa Cru z (Author: Carlos A Damiel)

The maximum operating depth of immersion of over 300 meters thanks the HY-80 steel that makes up his helmet , coupled with a submerged speed of 25 knots and a range of 9500 miles , turn it into a conventional attack submarine class. The armament consists of 22 torpedoes SST-4 fiber-optic guided reviewed.

Photo 5. compartment of a submarine torpedo type TR 1700 (Author: Carlos A. Damiel)

addition, the flexibility of its modular design allows you to configure components and equipment from various sources, facilitating the upgrading work required ships of this type regularly. The interior space, is designed to optimize the useful areas, allowing interior comfort than their predecessors, but also limited.

Photo 6. The ARA Santa Cruz (S-42) in March 2007 against Arsenal Naval Mar del Plata ((Author: Martin Otero / Source: www.fuerzanaval.com)

While ARA Santa Cruz ( S-41) received a review and modernization of half-life between 1999 and 2001 to be held in the Naval Arsenal Rio de Janeiro (ANRJ) of Brazil , the ARA San Juan (S-42) joined in mid-2007 for a review and update similar to Almirante Storni Shipyard.

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Both submarines have their base of operations in the Base Naval Mar del Plata (BNMP) and together with the ARA Salta (S-31) make up Current Submarine Force Armada Argentina.

Photo 7. Small "pair of wolves" , the ARA Santa Cruz (S-41) type TR 170 0 surf surface company of ARA Salta (S-31) IKL 209 Class submarine . (Author: Joseph B. Albornoz)

During 2010, government sources, there was the story that one of the unfinished TR 1700 could reach completion to fulfill an old dream of the Armada Argentina the have a nuclear powered submarine, meeting the other hand the original project estimate. The modular nuclear reactor CAREM (short for Modular Elements of Central Argentina), in advanced stages of development the INCAV / CNEA, would be installed in the incomplete ARA Santa Fe (S-43) , even though it is more wishful thinking which resulted from an announcement by the then defense minister, Nilda Garre, a reality that concrete.

"Warriors" of "El Garage TV" showing inside the ARA San Juan (S-42) . (Uploaded to www.youtube.com by ARA-202)

several sources.

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in the Coast Guard presence Argentina

In Argentina 18 º Boat Show, held weeks ago in the San Fernando Yacht Park, the Naval Prefecture Argentina (PNA) put on display several of its most modern: Zodiac Hurricane RIB, ATVs and vehicles Polaris, Sea Doo watercraft and a Schweizer 300C helicopter light, more than other teams presented was most attractive displayed by the security forces.

Profile Schweizer 300C of PNA indicative PA-91, in the illustration with skates instead of floats (Source: Aerospace / Author: Sergio Hulaczuk)

The history of Light Helicopter Schweizer 300C begins in 1964 when Hughes Helicopters develops a three-seat variant of the Hughes 269A, two-seater helicopter is widely accepted in the early years of the 60s, marketed as the Hughes 269B Hughes 300 . In 1969 goes to market an improved version of the Hughes 300C, with improved engine, rotor of more length and greater capacity. In 1983 Schweizer Aircraft begins to manufacture under license from Hughes and acquires the definitive duties in 1986, when he received the present name Schweizer 300C.

Photo 1. PA-94 Schweizer of PNA . Note the large floats and the location of the rescue stretcher (Author: M. Agostini)

To date we have made some 2800 helicopters of this type, and some lining in the armed forces and security various countries in its training functions as utilitarian. The cost is about U $ S 250,000, - per unit. The Coast Guard Argentina acquired 6 (six) drives in 3 runs, 2 (two) in 1996, 2 (two) in 1999 and 2 (two) in 2001 for use in short-range coastal surveillance, anti- drug trafficking, training of pilots and functions SAR (Search and Rescue, Search and Rescue). Were deployed to bases in the PNA in Posadas, Corrientes, Santa Fe and San Fernando (Buenos Aires).

Photo 2. The PA-94 Schweizer of PNA seen from the front, with its large glazed cabin that allows for optimal viewing (Author: M. Agostini)

As the distinguishing characteristic of the Schweizer PNA are equipped with floats filled polyurethane (4.7 m long and 27kg)-which gives them some amphibious capability, and a side table that is mounted on supports located on the right side of the fuselage. It also has a hook load that allows you to carry up to 385kg suspended.

Photo 3. Detail from inside the cabin, where you can see the dashboard and the control lever (Photo: M. Agostini)

Photo 4. The author of this blog in the cabin of PA-94.

The breakdown of units Aviation Service (SEAV) of PNA is:

Series No. 1729. NAP ID: PA-90. In service.
Series No. 1730. NAP ID: PA-91. Decommissioned (1)
Series No. 1778. NAP ID: PA-92. Discharged (2)
Series No. 1779. NAP ID: PA-93. In service.
Series No. 1816. NAP ID: PA-94. In service.
Series No. 1817. NAP ID: PA-95. In service.

(1) was destroyed in the crash in Entre Ríos in October 1999.
(2) was destroyed in the crash in San Fernando (Buenos Aires) in January 2010.

Photo 5. Details of the fuselage. The section is painted the insignia of the PNA is one of the two fuel tanks with a total capacity of 250 liters (Author: M. Agostini)

How is there are only 4 helicopters Schweizer on active duty after the accident numerals and PA-91 PA-92 , the latter with the tragic toll of two fatalities. Helicopters and PA-90 PA-94 also damaged in operational accidents but could be repaired and remain on active duty. In September 2010 the PNA called for bids to purchase two more units to replace those lost Schweizer, but do not know the results of that call.

Photo 6 . Poster detailing the technical characteristics the Schweizer 300C of Prefecture (Author: M. Agostini)

Photo 7. River rescue basket used by the Schweizer , equipped with life jackets and floats (Author: M. Agostini)

Sources: http://www.helis.com http://www.aeroespacio.com.ar http://www.jus.gov.ar