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Friday, November 29, 2013

Amur-class submarine

From Wikipedia, the free encyclopedia


Model of Amur-950 submarine with BrahMos
Class overview
Name: Amur class submarine
Builders: Rubin Design Bureau, Admiralty Shipyard, Saint Petersburg.
Preceded by: Lada class
Subclasses: Amur-950, Amur-1650
Cost: $450,000,000
Planned: ~11
Completed: 0
Active: 0
General characteristics
Type: Submarine
Displacement: 950 long tons (970 t) surfaced
Length: 58.8 m (192 ft 11 in)
Beam: 5.65 m (18 ft 6 in)
Height: 6.4 m (21 ft 0 in)
Speed: 20 knots (23 mph; 37 km/h)
Range: 350 nmi (650 km) AIP
3,000 nmi (5,600 km) Snorkel
Endurance: 45 days
Test depth: 250 m (820 ft)
Complement: 18
Armament: • 4 × 533 mm (21 in) torpedo tubes
• 16 torpedoes
• 10 VLS cells
The Amur class submarine (named for the Amur River), is one of the latest Russian submarine designs. It is advertised as an export version of the Lada class, a modernised version of the Kilo-class submarine with improved acoustic stealth, new combat systems, and an option for air-independent propulsion (AIP).
The new vessels are the fourth generation of the Kilo submarine family, with two models developed.
The Amur-1650 is larger and intended for longer missions. The Amur-950 is armed with a VLS missile system capable of salvo-fire at multiple predesignated targets. Sonar signatures of these submarines are several times lower than the older “Kilo” class submarines.[1] Both designs are equipped with radio-electronic weapons of the newer generation created on the basis of the latest science and technology. They can be outfitted with AIP fuel cells, considerably improving submerged endurance and range. AIP capability can be added in a hull extension plug either during new build construction, or as a refit to existing boats.
The builder claims that these vessels can operate in all areas of the world except areas with solid ice cover; in all weather conditions, and in shallow and deep water.[2][3]

Construction

Rubin Central Design Bureau's chief designer for the Amur 1650 and 950 is Yuri Kormilitsyn. As the further development of ideas already implemented in Kilo class submarines, Amur boats are single-hulled, with minimal displacement allowing for reduced noise signature and improved propulsion quality. A totally new main electric engine using permanent magnets is in development/construction and projected to give high energy conversion efficiency even at low cruise speeds.

Planned versions

General Characteristics[2][3]
Model: Amur 950
Image Amur 950
Displacement (surf/subm. tons): 1,065/ ?
Length (meters): 56.8
Beam (meters): 5.65
Speed submerged (knots): 20
Depth (meters): 300
Endurance (days): 30
Complement: 19
Armament: 4 533mm tubes, 16 torps., missiles, mines total.
10 vertical silos for BrahMos missiles

Current operators

No ships of this class built yet. Russia has offered the sub for sale to India. On 4 July 2013, Rosoboronexport announced they will offer the Amur 1650 to the Moroccan Navy if they announce a tender for new submarines.[4]

See also

Thursday, November 28, 2013

Russian 3M-54 Klub missile

From Wikipedia, the free encyclopedia


Klub
3M-54E Sketch.svg
3M-54E sketch
Type Anti-ship missile
Anti-submarine missile
Land attack cruise missile
Place of origin Russia
Service history
Used by See users
Production history
Manufacturer Novator Design Bureau
Specifications
Weight Varies on variant, from 1,300 kg-1780 kg- 2300 kg
Length Varies on variant, from 8.22 m to 6.2 m
Diameter 0.533 m
Warhead Varies

Engine Multi-stage Solid-Fuel rocket, Turbojet engine for 3M-54/E/TE/E1/TE1, -14/E/TE, Solid fuel rocket for 91RE1/RTE2
Operational
range
Varies on variant, maximum range is 300 km
Flight altitude 10-15 m
Speed 0.8-2.5-2.9 mach
Guidance
system
Inertial and Active Radar Homing
Launch
platform
naval ships, submarines
The Russian 3M-54 is a domestic surface ship and submarine-launched anti-ship missile developed by the Novator Design Bureau (OKB-8). Its US Department of Defense (DOD) designation is "SS-N-27A" with the NATO codename of "Sizzler". Derived export versions are the 3M-54E and the 3M-54E1. The 3M-54E has a DOD designation, the SS-N-27B; (it does not have a NATO codename). The 3M-54 and 3M-54E, in their final stage, make a supersonic 'sprint' to the target, reducing the time that target's defense systems have to react. The 3M-54E1 has the capability of subsonic speed in its whole flight. Its range is longer than the 3M-54E.
The name of "Klub" is used for export versions, the 3M-54E and 3M54E1.

Design

The missile is a modular system with five different variants: two anti-shipping types, one for land attack, and two with an anti-submarine role. The missile is designed to share common parts between the surface and submarine-launched variants. But each missile consists of different components, for example, the booster. The missile can be launched from a surface ship using a Vertical Launched System (VLS). It has a booster with thrust vectoring capability. The missile launched from a submarine has no need for such an addition, but has a conventional booster instead.

Terminal supersonic flight

The Russian domestic variant (3M-54) and export variants (3M-54E/3M-54TE) fly at sub-sonic speeds while achieving supersonic speed as they near their target. They are also believed to be able to perform very high angled defensive maneuvers in contrast to the common linear flight path of other anti-ship cruise missiles.[1]
3M-54E maquette

Variants[2]

Domestic variants are basic versions of this missile family; these are the 3M-54 and 3M-14. The export model is called the "Klub". There are two major launch vehicles: the Klub-S, designed for use from submarines, and the Klub-N, designed for surface ships. These two launch platforms can be equipped with the following warhead and guidance combinations:

Domestic variants

  • 3M-54 - DOD designation SS-N-27A (NATO codename "Sizzler"). An anti-shipping variant deployed in the Russian federation navy, as a submarine launched missile, Its basic length is 8.22 m (27.0 ft), with a 200 kg (440 lb) warhead. Its range is 440–660 km (270–410 mi). It is a Sea-skimmer with supersonic terminal speed and a flight altitude of 4.6 metres (15 ft) at its final stage; its speed is then 2.9 mach.
  • 3M-54T - DOD designation SS-N-27A (NATO codename also "Sizzler"). The anti-shipping variant is deployed in the Russian federation navy, in a surface ship with a VLS launched system and a thrust vectoring booster; its Basic length is 8.9 m (29 ft), its warhead weight and other performances are the same as the 3M-54.
  • 3M-14 - DOD designation SS-N-30A. An Inertial guidance land attack variant deployed in the Russian federation navy. The submarine-launched weapon has a basic length of 6.2 m (20 ft), with a 450 kg (990 lb) warhead. Its range is 600–900 km (370–560 mi). Its subsonic terminal speed is 0.8 mach.
  • 3M-14T - DOD designation SS-N-30A; is the Inertial guidance land attack variant which is deployed in the Russian federation navy. A surface ship with VLS launched missile, with thrust vectoring booster, its basic length is 8.9 m (29 ft), its warhead weight and other performance are the same as the 3M-14.

Export versions

3M-54E1 maquette

Klub-S[3]

  • 3M-54E - DOD designation SS-N-27B is the submarine launched anti-shipping variant, Its basic length is 8.2 m (27 ft), with a 200 kg (440 lb) warhead. Its range is 220 km; (note that its range is less than the 3M-54). It is a sea-skimmer with a supersonic terminal speed and a flight altitude of 4.6 metres (15 ft) at its final stage is 2.9 mach.[4]
3M-14E maquette
  • 3M-54E1 - No DOD designation; is a submarine-launched anti-shipping variant, Its basic length is 6.2 m (20 ft), with a 400 kg (880 lb) warhead. Its range is 300 km (190 mi). It is a sea-skimmer with a subsonic terminal speed of 0.8 mach. It is allegedly capable of disabling or even sinking an aircraft carrier.[5]
  • 3M-14E - DOD designation SS-N-30B. An inertially guided land attack variant; it is launched from a submarine. Its basic length is 6.2 m (20 ft), with a 450 kg (990 lb) warhead. Its range is 300 km (190 mi). It has a subsonic terminal speed of 0.8 mach.
  • 91RE1 - No DOD designation. A submarine-launched anti-submarine variant, it consists of two stages, one solid booster with four grid fins and one anti-submarine light torpedo. Its basic length is 7.65 m (25.1 ft), it has a range of 50 km (31 mi). It can reach supersonic speed. The torpedo has a warhead weight of 76 kg (168 lb). It is similar to the American ASROC/SUBROC missile/torpedo system. It follows a ballistic path on the surface, with a speed of Mach 2.5.
91RE1 maquette

Klub-N[3]

  • 3M-54TE - DOD designation SS-N-27B. A surface vessel with VLS launched anti-shipping variant; with a thrust vectoring booster. Its basic length is 8.9 m, its warhead weight and other performance is the same as the 3M-54E. Its range is less than the 3M-54. It is a sea-skimmer with supersonic terminal speed and a flight altitude of 15 feet (4.6 m) at its final stage, when it has a speed of 2.9 mach.
  • 3M-54TE1 - No DOD designation. A surface ship with VLS anti-shipping variant, with thrust vectoring booster. Its basic length is 8.9 m (29 ft), its warhead weight and other performance is the same as the 3M-54E1. A sea-skimmer with a subsonic terminal speed of 0.8 mach. It is also allegedly capable of disabling or even sinking an aircraft carrier.
  • 3M-14TE - DOD designation SS-N-30B. An inertially guided land attack variant. It is a surface ship with VLS missile and a thrust vectoring booster. Its basic length is 8.9 m (29 ft), its warhead weight and other performances are the same as the 3M-14E. Its subsonic terminal speed is 0.8 mach.
91RTE2 maquette
  • 91RTE2 - No DOD designation. A surface ship with the VLS launched anti-submarine variant; it consists of three stages, one booster with thrust vector nozzle, one conventional booster, and one anti-submarine light torpedo. Its basic length is 8.9 m (29 ft), with a range of 40 km (25 mi) at supersonic speed. The torpedo has a warhead weight of 76 kg (168 lb). The lightest of all variants, with a launch weight of 1,300 kg (2,900 lb). Speed is Mach 2.

Launch Platforms

The Russian Kilo class submarine is the primary launch platform for the missile. The future Russian Lada class and its variants should also be able to launch this weapon. The Indian Talwar class frigate is another primary shipborne launch platform for the missile. The Akula class and the new Yasen class can also launch it. The new Russian Admiral Sergei Gorshkov class frigates and the second batch of Steregushchy class frigates use the same UKSK VLS as the Talwar class frigates, and thus would be able to carry these missiles as well.
In addition it is believed by some analysts that an air-launched variant will be developed to arm the Tu-142s currently in service with both the Russian and Indian Navies; it is also anticipated that the Tu-22M3 operated by the Indian Navy will be equipped with the missile.[6] A truck mounted version is planned for development by the Novator Design Bureau.
A Klub-K variant, which launches from a commercial-appearing shipping container mounted on a truck, train, or merchant vessel, was advertised in 2010 [7] and was shown for the first time at the MAKS 2011 airshow [8][9]

Operators

References

Kilo-class submarine

From Wikipedia, the free encyclopedia

The Kilo class is the NATO reporting name for a naval diesel-electric submarine that is made in Russia. The original version of the vessels were designated Project 877 Paltus (Halibut) in Russia. There is also a more advanced version, designated as Improved Kilo in the west, and Project 636 Varshavyanka in Russia.
The Kilo class was to have been succeeded by the Lada class. In November 2011 the Russian Navy announced that the Lada class will not enter service because trials with the lead boat of the new class, Sankt Peterburg (B-585) had shown major deficiencies. Construction of two further boats has been suspended.[1]
The boats are mainly intended for anti-shipping and anti-submarine operations in relatively shallow waters. Original Project 877 boats are equipped with Rubikon MGK-400 sonar system (with NATO reporting name Shark Gill), which includes a mine detection and avoidance sonar MG-519 Arfa (with NATO reporting name Mouse Roar). Newer Project 636 boats are equipped with improved MGK-400EM, with MG-519 Afra also upgraded to MG-519EM. The improved sonar systems have reduced the number of operators needed by sharing the same console via automation.
Anechoic tiles are fitted on casings and fins to absorb the sound waves of active sonar, which results in a reduction and distortion of the return signal.[2] These tiles also help attenuate sounds that are emitted from the submarine, thus reducing the range by which the sub may be detected by passive sonar.[3]
One Kilo class submarine B-871 was equipped with pump-jet propulsion.[4][5]

Specifications

Schematic drawing of the Kilo class
There are several variants of the Kilo class. The information below is the smallest and largest number from the available information for all three variants of the ship.[37]
  • Displacement:
    • 2,300–2,350 tons surfaced
    • 3,000–4,000 tons submerged
  • Dimensions:
    • Length: 70–74 meters
    • Beam: 9.9 meters
    • Draft: 6.2–6.5 meters
  • Maximum speed
    • 10–12 knots surfaced
    • 17–25 knots submerged
  • Propulsion: Diesel-electric 5,900 shp (4,400 kW)
  • Maximum depth: 300 meters (240–250 meters operational)
  • Endurance
    • 400 nautical miles (700 km) at 3 knots (6 km/h) submerged
    • 6,000 nautical miles (11,000 km) at 7 knots (13 km/h) snorkeling (7,500 miles for the Improved Kilo class)
    • 45 days sea endurance
  • Armament
  • Crew: 52
  • Price per unit is US$200–250 million (China paid approx. US$1.5-2 billion for 8 Project 636 Kilo class submarines)

See also


The crew of the Russian Pacific Fleet's diesel-powered B-190 Krasnokamensk Kilo-class submarine on the eve of Submariner Day, due to be celebrated on March 19, 2008


KIlo-class diesel submarine being towed through the Mediterranean sea en route to Iran (12-23-1995).jpg
An Iranian Kilo-class submarine, the #Yunes
Class overview
Builders: Central Design Bureau for Marine Engineering “Rubin”
Shipyard 199 "Krasnoe Sormovo", Nizhniy Novgorod (Gorkiy)
Shipyard 112,"imeni Leninskogo Komsomola", Komsoloľsk na Amure
Shipyard "Leningradskoe Admiralteyskoe Obedinenie" (Admiralteyskie Verfi), Saint Petersburg (Leningrad)
Shipyard "Severnoe Mašinostroiteľnoe Predprijatie", Severodvinsk
Operators:  Soviet Navy
 Russian Navy
 People's Liberation Army Navy
 Indian Navy
 Islamic Republic of Iran Navy
 Polish Navy
 Romanian Naval Forces
 Algerian National Navy
 Vietnamese People's Navy
Preceded by: Tango-class submarine
Succeeded by: Lada-class submarine
In commission: April 1982
Building: 7
Completed: 57
Active: 47
Lost: 1
Retired: 2
General characteristics
Displacement: Surfaced: 2,300–2,350 tons
Submerged:3,000-3,950 tons full load
Length: 70.0–74.0 m
Beam: 9.9 m
Draft: 6.5 m
Depth of hold: Operational: 240 meters
Maximum: 300 meters
Installed power: Diesel-electric
Propulsion: Diesel-electric propulsion
2 x 1000 kW Diesel generators
1 x 5,500–6,800 shp Propulsion motor
1 x fixed-pitch 6 or 7 bladed Propeller (6BL project 877) (7BL project 636)
Speed: Surfaced: 10–12 knots
Submerged: 17–25 knots
Range: With snorkel: 6,000–7,500 miles at 7 knots
Submerged: 400 miles at 3 knots
Full run: 12.7 miles at 21 knots
Endurance: 45 days
Test depth: 300 m
Complement: 52
Armament: 6/533 mm torpedo tubes
18 torpedoes
Club S anti-ship missiles (only on some export versions)
24 mines
8 SA-N-8 Gremlin or 8 SA-N-10 Gimlet Surface-to-air missiles (export submarines may not be equipped with air defense weapons)
        

China sends warplanes to newly declared air zone



Senkaku/Diaoyu islands (file image) 
 The zone includes a groups of islands known as Diaoyu in Chinese and Senkaku by Japan

Related Stories

China has sent warplanes to its newly declared air defence zone in the East China Sea, state media reports.
The vast zone, announced last week, covers territory claimed by China, Japan, Taiwan and South Korea.
China has said all planes transiting the zone must file flight plans and identify themselves, or face "defensive emergency measures".
But Japan, South Korea and the US have all since flown military aircraft through the area.

“Start Quote

Japanese restraint in the face of Chinese efforts to modify the status quo is currently keeping the peace, potentially to the detriment of Japan's claim to the island”
James Manicom Expert, China-Japan security issues
The new dispute in an already tense region has raised concerns it could escalate into an unplanned military incident.
China's state news agency Xinhua quoted air force spokesman Col Shen Jinke as saying several fighter jets and an early warning aircraft had been deployed to carry out routine patrols as "a defensive measure and in line with international common practices".
He said the country's air force would remain on high alert and would take measures to deal with all air threats to protect national security.
In Xinhua's Chinese language version of the article, the colonel said the aircraft would "strengthen the monitoring of targets in the air defence zone and do their duty".

China-Japan disputed islands

  • The archipelago consists of five uninhabited islands and three reefs
  • Japan, China and Taiwan claim them; they are controlled by Japan and form part of Okinawa prefecture
  • Japanese businessman Kunioki Kurihara owned three of the islands but sold them to the Japanese state in September 2012
  • The islands were also the focus of a major diplomatic row between Japan and China in 2010
'Destabilising'
The controversial air defence identification zone (ADIZ) includes islands known as Senkaku in Japan and Diaoyu in China, which are claimed by Japan, China and Taiwan.
Japan controls the islands, which have been the focus of a bitter and long-running dispute between Japan and China.
The zone also covers a submerged rock that South Korea says forms part of its territory.
China says the establishment of the zone was "completely justified and legitimate", but it has been widely condemned.
America, which called the move a "destabilising attempt to alter the status quo in the region", flew two unarmed B-52 bombers through the zone unannounced on Tuesday.
South Korea's Foreign Minister Yun Byung-se said on Wednesday that it had made "already tricky regional situations even more difficult to deal with".
Seoul said one of its military planes also entered the zone on Tuesday.

Air defence identification zones

  • Zones do not necessarily overlap with airspace, sovereign territory or territorial claims
  • States define zones, and stipulate rules that aircraft must obey; legal basis is unclear
  • During WW2, US established an air perimeter and now maintains four separate zones - Guam, Hawaii, Alaska, and a contiguous mainland zone
  • UK, Norway, Japan and Canada also maintain zones
Source: aviationdevelopment.org
On Thursday, Japan said its aircraft had conducted routine "surveillance activity" over the East China Sea zone, but did not specify when.
"Even since China has created this airspace defence zone, we have continued our surveillance activities as before in the East China Sea, including in the zone," said Japan's top government spokesman, Yoshihide Suga.
"We are not going to change this [activity] out of consideration to China," he added.
South Korea and China held talks on the zone on Thursday, but failed to reach any agreement.

 BBC

Nazi UFOs

From Wikipedia, the free encyclopedia


Artistic impression of a Haunebu-type German flying saucer, similar in appearance to craft allegedly photographed by George Adamski, Reinhold Schmidt, Howard Menger, and Stephen Darbishire.
 
In UFOlogy, conspiracy theory, science fiction, and comic book stories, claims or stories have circulated linking UFOs to Nazi Germany. The German UFO theories describe supposedly successful attempts to develop advanced aircraft or spacecraft prior to and during World War II, and further assert the post-war survival of these craft in secret underground bases in Antarctica, South America or the United States, along with their creators.[1] According to the limited available information on the UFOs, various potential code-names or sub-classifications of Nazi UFO craft such as Rundflugzeug, Feuerball, Diskus, Haunebu, Hauneburg-Geräte, V7, Vril, Kugelblitz (not related to the self-propelled anti-aircraft gun of the same name), Andromeda-Geräte, Flugkreisel, Kugelwaffen, and Reichsflugscheiben have all been referenced.
Accounts appear as early as 1950, likely inspired by historical German development of specialized engines such as Viktor Schauberger's "Repulsine" around the time of WWII. Elements of these claims have been widely incorporated into various works of fictional and purportedly non-fictional media, including video games and documentaries, often mixed with more substantiated information.
German UFO literature very often conforms largely to documented history on the following points:
  • The Third Reich claimed the territory of New Swabia in Antarctica, sent an expedition there in 1938, and planned others.[2]
  • The Third Reich conducted research into advanced propulsion technology, including rocketry, Viktor Schauberger's engine research, flying wing craft and the Arthur Sack A.S.6 experimental circular winged aircraft.
  • Some UFO sightings during World War II, particularly those known as foo fighters, were thought by the Allies to be prototype enemy aircraft designed to harass Allied aircraft through electromagnetic disruption; a technology similar to today's electromagnetic pulse (EMP) weapons.[3][page needed]

Early claims

In WWII the so-called "foo fighters," a variety of unusual and anomalous aerial phenomena, were witnessed by both Axis and Allied personnel. While some foo fighter reports were dismissed as the misperceptions of troops in the heat of combat, others were taken seriously, and leading scientists such as Luis Alvarez to investigate them.[4][page needed] In at least some cases, Allied intelligence and commanders suspected that foo fighters reported in the European theater represented advanced German aircraft or weapons, particularly given that Germans had already developed such technological innovations as V-1 and V-2 rockets and the first jet-engine fighter planes, and that a minority of foo fighters seemed to have inflicted damage to allied aircraft.[4][page needed]
Similar sentiments regarding German technology resurfaced in 1947 with the first wave of flying saucer reports after Kenneth Arnold's widely reported close encounter with nine crescent-shaped objects moving at a high velocity. Personnel of Project Sign, the first U.S. Air Force UFO investigation group, noted that the advanced flying wing aeronautical designs of the German Horten brothers were similar to some UFO reports.[5] In 1959, Captain Edward J. Ruppelt, the first head of Project Blue Book (Project Sign's follow-up investigation) wrote:
When WWII ended, the Germans had several radical types of aircraft and guided missiles under development. The majority were in the most preliminary stages, but they were the only known craft that could even approach the performance of objects reported by UFO observers.[6]
While these early speculations and reports were limited primarily to military personnel, the earliest assertion of German flying saucers in the mass media appears to have been an article which appeared in the Italian newspaper Il Giornale d'Italia in early 1950. Written by Professor Giuseppe Belluzzo, an Italian scientist and a former Italian Minister of National Economy under the Mussolini regime, it claimed that "types of flying discs were designed and studied in Germany and Italy as early as 1942". Belluzzo also expressed the opinion that "some great power is launching discs to study them".[7]
The Bell UFO was among the first flying objects to be connected with the Nazis. It apparently had occult markings on it and it was also rumoured to have been very similar to a Wehrmacht document about a vertical take off aircraft. It is directly related to the supposed crash of a bell-shaped object that occurred in Kecksburg, Pennsylvania, USA on December 9, 1965. The same month, German engineer Rudolf Schriever gave an interview to German news magazine Der Spiegel in which he claimed that he had designed a craft powered by a circular plane of rotating turbine blades 49 ft (15 m) in diameter. He said that the project had been developed by him and his team at BMW's Prague works until April 1945, when he fled Czechoslovakia. His designs for the disk and a model were stolen from his workshop in Bremerhaven-Lehe in 1948 and he was convinced that Czech agents had built his craft for "a foreign power".[8][9] In a separate interview with Der Spiegel in October 1952 he said that the plans were stolen from a farm he was hiding in near Regen on 14 May 1945. There are other discrepancies between the two interviews that add to the confusion.[10] However, many skeptics have doubted that such a Bell UFO was actually designed or ever built.[11]
In 1953, when Avro Canada announced that it was developing the VZ-9-AV Avrocar, a circular jet aircraft with an estimated speed of 1,500 mph (2,400 km/h), German engineer Georg Klein claimed that such designs had been developed during the Third Reich. Klein identified two types of supposed German flying disks:
  • A non-rotating disk developed at Breslau by V-2 rocket engineer Richard Miethe, which was captured by the Soviets, while Miethe fled to the US via France, and ended up working for Avro.
  • A disk developed by Rudolf Schriever and Klaus Habermohl at Prague, which consisted of a ring of moving turbine blades around a fixed cockpit. Klein claimed that he had witnessed this craft's first manned flight on 14 February 1945, when it managed to climb to 12,400 m (40,700 ft) in 3 minutes and attained a speed of 2,200 km/h (1,400 mph) in level flight.
Aeronautical engineer Roy Fedden remarked that the only craft that could approach the capabilities attributed to flying saucers were those being designed by the Germans towards the end of the war. Fedden (who was also chief of the technical mission to Germany for the Ministry of Aircraft Production) stated in 1945:
“ I have seen enough of their designs and production plans to realize that if they (the Germans) had managed to prolong the war some months longer, we would have been confronted with a set of entirely new and deadly developments in air warfare.[12] ”
Fedden also added that the Germans were working on a number of very unusual aeronautical projects, though he did not elaborate upon his statement.[13]

Later claims

Morning of the Magicians

Le Matin des Magiciens, a 1960 book by Louis Pauwels and Jacques Bergier, made many spectacular claims about the Vril Society of Berlin.[14] Several years later writers, including Jan van Helsing,[15][16] Norbert-Jürgen Ratthofer,[17] and Vladimir Terziski, have built on their work, connecting the Vril Society with UFOs. Among their claims, they imply that the society may have made contact with an alien race and dedicated itself to creating spacecraft to reach the aliens. In partnership with the Thule Society and the Nazi Party, the Vril Society developed a series of flying disc prototypes. With the Nazi defeat, the society allegedly retreated to a base in Antarctica and vanished into the hollow Earth to meet up with the leaders of an advanced race inhabiting inner Earth.

Ernst Zündel's marketing ploy

When German Holocaust denier Ernst Zündel started Samisdat Publishers in the 1970s, he initially catered to the UFOlogy community, which was then at its peak of public acceptance. His books claimed that flying saucers were Nazi secret weapons launched from an underground base in Antarctica, from which the Nazis hoped to conquer the world and possibly the planets.[18] Zündel also sold (for $9999) seats on an exploration team to locate the polar entrance to the hollow earth.[19] Some who interviewed Zündel claim that he privately admitted it was a deliberate hoax to build publicity for Samisdat, although he still defended it as late as 2002.[20][21]

Miguel Serrano's book

In 1978 Miguel Serrano, a Chilean diplomat and Nazi sympathizer, published El Cordón Dorado: Hitlerismo Esotérico [The Golden Thread: Esoteric Hitlerism] (in Castillan), in which he claimed that Adolf Hitler was an Avatar of Vishnu and was at that time communing with Hyperborean gods in an underground Antarctic base in New Swabia. Serrano predicted that Hitler would lead a fleet of UFOs from the base to establish the Fourth Reich.[22] In popular culture, this alleged UFO fleet is referred to as the Nazi flying saucers from Antarctica.

Fiction and media

  • In 1947 Robert A. Heinlein published Rocket Ship Galileo, a science fiction novel featuring a German moon base.
  • Iron Sky (2012): a sci-fi black comedy about Nazis who left Earth from their hidden base in Antarctica and established a secret fortress on the dark side of the Moon. After Germany's defeat in 1945, the Nazis vowed to return to Earth "in peace," and they finally return in the year 2018, but with a full invasion force of flying saucers in order to finally defeat the Allies and restore the Third Reich. During their invasion, they end up battling with the President of the United States (who in the film resembles Sarah Palin) and unintentionally cause a world-wide nuclear war when every space-faring nation on Earth lays claim to the Nazis' powerful Helium-3 resources on the Moon.
  • Iron Sky: Invasion (2012): a video game space combat simulator and an expansion of the 2012 movie, with interactive and flyable recreations of numerous alleged prototypes and models of Nazi UFO spacecraft.
  • Robert Rankin's novel Nostradamus Ate My Hamster features Hitler and a group of Nazis escaping the end of the war to the future in a time machine; they attempt the subtle takeover of Earth through media manipulation until their time machine is used against them.
Pictures, described as recently declassified and purporting to show these flying saucers, were shown on the History channel.[citation needed]

See also

Wednesday, November 27, 2013

Electrically powered spacecraft propulsion

From Wikipedia, the free encyclopedia


 
An electrically powered spacecraft propulsion system uses electrical energy to change the velocity of a spacecraft. Most of these kinds of spacecraft propulsion systems work by electrically expelling propellant (reaction mass) at high speed, but electrodynamic tethers work by interacting with a planet's magnetic field.[1] Electric thrusters typically use much less propellant than chemical rockets because they operate at a higher specific impulse. Due to limited electric power the thrust is much weaker compared to chemical rockets, but electric propulsion can provide a small thrust for a long time.[2] Electric propulsion is now a mature and widely used technology on spacecraft. Russian satellites have used electric propulsion for decades.[3] As of 2013, over 200 spacecraft operated around the world use electric propulsion for stationkeeping, orbit raising, or primary propulsion.[4]

History

The idea of electric propulsion for spacecraft dates back to 1911, introduced in a publication by Konstantin Tsiolkovsky.[5] Earlier, Robert Goddard had noted such a possibility in his personal notebook.[6]
The first in-space demonstration of electric propulsion was an ion engine carried on board the SERT-1 (Space Electric Rocket Test) spacecraft, launched on 20 July 1964.

Types of electric propulsion

Ion/plasma drives

This type of rocket-like reaction engine uses electric energy to obtain thrust from propellant carried with the vehicle. Unlike rocket engines, these kinds of engines do not necessarily have rocket nozzles, and thus many types are not considered true rockets. Electric propulsion thrusters for spacecraft may be grouped in three families based on the type of force used to accelerate the ions of the plasma:

Electrostatic

If the acceleration is caused mainly by the Coulomb force (i.e. application of a static electric field in the direction of the acceleration) the device is considered electrostatic.

Electrothermal

The electrothermal category groups the devices where electromagnetic fields are used to generate a plasma to increase the temperature of the bulk propellant. The thermal energy imparted to the propellant gas is then converted into kinetic energy by a nozzle of either solid material or magnetic fields. Low molecular weight gases (e.g. hydrogen, helium, ammonia) are preferred propellants for this kind of system.
An electrothermal engine uses a nozzle to convert the heat of a gas into the linear motion of its molecules so it is a true rocket even though the energy producing the heat comes from an external source.
Performance of electrothermal systems in terms of specific impulse (Isp) is somewhat modest (500 to ~1000 seconds), but exceeds that of cold gas thrusters, monopropellant rockets, and even most bipropellant rockets. In the USSR, electrothermal engines were used since 1971; the Soviet "Meteor-3", "Meteor-Priroda", "Resurs-O" satellite series and the Russian "Elektro" satellite are equipped with them.[7] Electrothermal systems by Aerojet (MR-510) are currently used on Lockheed Martin A2100 satellites using hydrazine as a propellant.

Electromagnetic

If ions are accelerated either by the Lorentz force or by the effect of an electromagnetic fields where the electric field is not in the direction of the acceleration, the device is considered electromagnetic.

Other

Non-ion drives

Electrodynamic tether

Electrodynamic tethers are long conducting wires, such as one deployed from a tether satellite, which can operate on electromagnetic principles as generators, by converting their kinetic energy to electric energy, or as motors, converting electric energy to kinetic energy.[8] Electric potential is generated across a conductive tether by its motion through the Earth's magnetic field. The choice of the metal conductor to be used in an electrodynamic tether is determined by a variety of factors. Primary factors usually include high electrical conductivity, and low density. Secondary factors, depending on the application, include cost, strength, and melting point.

Steady vs. unsteady

Electric propulsion systems can also be characterized as either steady (continuous firing for a prescribed duration) or unsteady (pulsed firings accumulating to a desired impulse). However, these classifications are not unique to electric propulsion systems and can be applied to all types of propulsion engines.

Dynamic properties

Electrically-powered rocket engines provide lower thrust compared to chemical rockets by several orders of magnitude because of the limited electrical power possible to provide in a spacecraft.[2] A chemical rocket imparts energy to the combustion products directly, whereas an electrical system requires several steps. However, the high velocity and lower reaction mass expended for the same thrust allows electric rockets to run for a long time. This differs from the typical chemical-powered spacecraft, where the engines run only in short intervals of time, while the spacecraft mostly follows an inertial trajectory. When near a planet, low-thrust propulsion may not offset the gravitational attraction of the planet. An electric rocket engine cannot provide enough thrust to lift the vehicle from a planet's surface, but a low thrust applied for a long interval can allow a spacecraft to manueuver near a planet.

Possible uses in the outer Solar System

Modern types of electrically powered spacecraft propulsion could provide thrust for flights to outer planets of the Solar System, but this would require nuclear power.[9] Geoffrey A. Landis proposed for interstellar travel future-technology project automatic space station with supplying the energy from an external source (laser of base station) and Electrically powered spacecraft propulsion.[10][11]

See also