Saturday, April 12, 2008

CHARLES DE GAULLE

CHARLES DE GAULLE
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The Charles De Gaulle is a 38,000 ton, nuclear powered French aircraft carrier launched in May 1994 The ship operates a fleet of 40 Rafale M combat aircraft, the Super Etendard and three E-2C Hawkeye airborne early warning aircraft. The ship also supports the AS 565 Panther and Dauphin helicopters. There are two lifts, measuring 19 x 13 m, which have a load capacity of 36 tons. The hangar has a floor area of 140 x 30 metres and a height 6.1 metres. It accommodates 20 to 25 aircraft. The main deck consists of a main runway angled at 8.5 degrees to the ship's axis and an aircraft launch area forward of the island. The runway and the forward launch area are each equipped with a USN Type C13 catapult rated to handle aircraft up to 22 tonnes and capable of launching one aircraft per minute. The runway is 195 metres long and the whole deck measures 260 x 64 metres. Charles de Gaulle
The Charles De Gaulle is a 38,000 ton, nuclear powered French aircraft carrier launched in May 1994 The ship operates a fleet of 40 Rafale M combat aircraft, the Super Etendard and three E-2C Hawkeye airborne early warning aircraft. The ship also supports the AS 565 Panther and Dauphin helicopters. There are two lifts, measuring 19 x 13 m, which have a load capacity of 36 tons. The hangar has a floor area of 140 x 30 metres and a height 6.1 metres. It accommodates 20 to 25 aircraft. The main deck consists of a main runway angled at 8.5 degrees to the ship's axis and an aircraft launch area forward of the island. The runway and the forward launch area are each equipped with a USN Type C13 catapult rated to handle aircraft up to 22 tonnes and capable of launching one aircraft per minute. The runway is 195 metres long and the whole deck measures 260 x 64 metres.

The ship's weapons are managed by a Senit Combat Management System, CMS Model 8. The system has the capacity to track up to 2,000 friendly and hostile targets. The weapon control system consists of two Sagem Vigy 105 optronic directors. The ship has two Sagem Vampir search and track systems. The ship is fitted with the Aster 15 surface-to-air missile launchers, Sylver vertical launch systems, installed on the edge of the deck, with two launchers (16 cells) on the starboard side forward of the bridge and two launchers on the port side aft of the bridge. The ship has two six-cell Sadral launching systems for the Mistral missile positioned on the edges of the main deck about 45 metres (starboard side) and 36 metres (port side) aft of the Aster missile launchers. The ship is also equipped with eight Giat 20F2 guns and four decoy launchers are installed, two on either side of the ship firing chaff to 8 km and infra-red flares to a range of 3 km




When launched, Charles de Gaulle nuclear-powered aircraft carrier was the largest fighting ship ever built by a European shipyard. Designed to operate 40 Rafale M aircraft, it will be the main unit of the French Navy's surface fleet. The Charles de Gaulle was officially handed over to the French Navy on 28 September 2000.


The Charles de Gaulle is the most sophisticated, highest performance warship ever built in Europe. She offers massive air power, a highly-integrated combat system, and impressive endurance. Deploying 40 modern combat planes plus early-warning aircraft, she can conduct 100 air missions a day. As the center-piece of a carrier group, she can perform vital duties in any waters.


Two catapults accelerate aircraft (Rafales, Hawkeyes, and modernized Super Étendards) to over 300 km/h in just 75 meters. The flight deck can launch one aircraft every 30 seconds or handle a mass landing of 20 aircraft in just 12 minutes. Data links (to NATO standards L16 and L11) allow Hawkeye early-warning aircraft to transmit tactical situation data in real time to naval units and combat aircraft
The Senit 8 CMS enables CIC officers and the OTC to monitor 2,000 tracks in real time and engage air, naval and shore targets in fully-integrated mode. As part of one of the most modern systems of its type ever deployed, Aster 15 hyper-agile anti-air missiles provide protection against attacking aircraft and missiles. The aircraft carrier acts as the hub of an extensive communications network exchanging data over 50 simultaneous links with naval and air units plus shore-based command centers



The Satrap stabilization system system offers exceptional performance. At 20 knots with the rudder at 30°, heel is just 1°. Reduced platform motion means the flight deck can handle 25-ton aircraft up to sea state 6.
In addition to state-of-the-art stabilization, communications and automation — including the Senit 8 CMS and the Shipmaster IPMS — all onboard facilities were designed and developed using the latest technologies, including CAD and virtual reality. All basic concepts correctly foreshadowed the design and construction of warships now at the proposal stage.
Safety is essential to the success of every naval mission. In peacetime, the crew's safety is the top priority. This depends not only on the inherent safety of the vessel's equipment and weapons, but also on how the crew handles the ship and how they respond to incidents and emergencies. As a result of long-term involvement in the design and development of powerplants for nuclear submarines and, more recently, the Charles-de-Gaulle aircraft carrier, safety awareness is a strong tradition at DCN. No other area of naval architecture demands stricter compliance with safety and environmental requirements, whether during normal operation or combat situations.
The procedures laid down in the DCN Reference System are based on lessons learned from the design and development of a wide range of warships. In addition to guidelines for naval architecture and design, the Reference System also details strict materials qualification processes and quality control procedures to be carried out during shipbuilding.

Dependability analyses are undertaken to check that each system's target failure rates comply with the allocated rates. The ship's Operations Manual is also based on these dependability analyses. This Manual details both normal operations and responses to failures and incidents

Nonetheless, the Charles de Gaulle has suffered from a variety of problems [see James Dunnigan's "How NOT to Build an Aircraft Carrier"]. The Charles de Gaulle took eleven years to build, with construction beginning in 1988 and entering service in late 2000. For comparison, constructino of the American CVN 77 began in 2001 with a projected delivery in 2008. The 40,000 ton ship is slower than the conventionally powered Foch, which she it replaced. The propellers on the CDG did not work properly, so she recycled those of the Foch. The nuclear reactor was problematic, with the engine crew receiving five times the allowable annual radiation dose. The flight deck layout has precluded operating the E-2 radar aircraft.










































Specifications
Power Plant
2 Nuclear Power Plants;Two propellers with 4 blades each, 80,000 ch (56,000 kW);Electric power: 21,400 kW
Length, overall
262 meters
Flight Deck Width
65 meters
Total Height
75 meters
Displacement
35,500 tons40,600 tons (full load)
Speed
27 knots
Aircraft
35-40
Aircraft Elevators
2
Catapults
2
Runway Floor Space
12,000 m²
Hangar Area Floor Space
4,600 m²
Crew
Ship's Company: 1,950
Armament
2 Aster 15 missile systems (16 each)2 Sadral systems (6 each)8 Giat 20 F2
Combat Systems
2 Raccal-Decca1 DRBJ 11 B1 DRBV 26 D1 DRBV 15 C1 Arabel1 Vampir DIBV 1 system2 DIBC 2A (Vigy 105) systems
1 ARBR 21 radar detector2 ARBB 33 jammers4 Sagaie decoy-launchersSLAT systemSAIGON systemSENIT 8 systemTACAN : VRBP-20A
Launch Rate
1 aircraft/30 seconds
Munitions Storage
550 tons
Fuel Storage
3,400 tons
Endurance
45 days




Sunday, July 8, 2007

INDIAN AIR FORCE MCRA REQUIREMENT (PART-2)


Second in the series is the swedish plane- SAAB JAS 39 GRIPEN(GRIFFIN) LIGHT WEIGHT MULTIROLE FIGHTER



The Gripen multi-role fighter aircraft, developed by Saab, was first flown in December 1988 and entered operational service with the Swedish Air Force in 1997. Gripen has been developed by an industrial consortium consisting of Saab, Ericsson Microwave Systems, Volvo Aero Corporation, Saab Avionics and FFV Aerotech. A joint venture company, Gripen International, has been set up by Saab and BAE Systems to market the Gripen for export markets.Regarded as the first of the Fourth Generation series of fighters anywhere, the JAS 39 Gripen represents one of the best engineered and designed fighters in the skies today - some regard it as the most capable as well.


JAS 39A is the single-seater version of the Gripen. A two-seater JAS 39B operational trainer variant of Gripen is available. The JAS 39B is equipped with the same avionics and weapons suite as the JAS 39A, with the exception of the gun. JAS 39C is the single seat Batch 3 and export standard version, which was first delivered to the Swedish Air Force in September 2002. JAS 39C has colour cockpit displays, on-board oxygen generation system (OBOGS) and in-flight refuelling capabilty. JAS 39D will be a similarly upgraded two seater.The base model is piloted by one crewman in an ergonomically-designed cockpit setting. The cockpit features three multi-function computer displays and a wide-angled heads up display. The fighter is designed with versatility in mind, thusly the system can be switched from a fighter, reconnaissance or strike role on the fly - allowing the pilot to accomplish all three types of sorties whenever needed.

The Gripen is built on a delta wing design that sits far aft of the main fuselage. Forward-placed canards are fully reactive and supply the airframe with stability at slower speeds and agility at higher speeds. A reported twenty to thirty percent of the body-covering material is made from carbon fibers and the system as a whole is said to maintain some stealth characteristics in the way of diminutive radar and heat signatures.


Gripen need only 2,625 feet of runaway space to take off or land, thus utilizing any road in the country to mount attacks or defend in the event of an all-scale invasion. The system as a whole is designed to be minimal to maintain in terms of battlefield conditions thusly a single technician and some enlisted hands can keep and make ready the aircraft for flight in under fifteen minutes of preparation.






The Gripen is fitted with an Ericsson PS-05/A multi-mode pulse-Doppler radar system capable of tracking multiple targets at one time. The targeting and communications system in highly integrated with other Gripens (with the Tactical Information Data Link System) allowing for a clear line of communication between flight groups for added versatility.The Ericsson PS-05 long-range multi-purpose pulse Doppler radar has air-to air operating modes covering long-range search, multi-target track-while-scan, multiple priority target tracking, air combat quick search modes, raid assessment and beyond visual range (BVR) missile mid-course updates. The air-to-surface modes include long-range search/target identification, multiple priority target tracking, high-resolution, real beam mapping, air-to-surface ranging and Doppler beam sharpening (DBS).The aircraft is equipped with a forward-looking infrared (FLIR) sensor and will have the Saab IR-Otis infrared search and track system (IRST).

The Gripen cockpit is dominated by three large, full color, Multi-Function Displays (MFDs) and a wide angle diffractive optics Head-Up Display (HUD) with a holographic combiner. A highly efficient human-machine interface has been integrated into the Gripen to substantially ease pilot workload, particularly in combat situations. This provides a Gripen pilot with outstanding situational awareness, ensuring unrivalled operational effectiveness. It also increases the time available for tactical decision-making allowing the pilot to use the aircraft and weapons system to maximum effect.




The main functions of each display are as follows:Head-Up Display (HUD) - providing FLIR imagery and weapon aiming information superimposed on the outside world at all altitudes.Flight Data Display (FDD) - provides flight data and system status information about the engine, fuel and external stores. Horizontal Situation Display (HSD) - provides navigational and tactical mission data superimposed on an electronic map of selectable scale. Multi-Sensor Display (MSD) - presents information from the radar, FLIR imagery and other sensors. Flight and fire control data are also superimposed.


The aircraft has VHF/UHF transmitters and receivers from SaabTech Vectronics, and a Thales TSC 2000 identification friend or foe (IFF) system. An air-to-air data link allows real-time exchange of tactical data within and between co-operating air units. In the attack and reconnaissance role, the data link allows radar-derived surface data to be transferred from one Gripen to a group of radar-silent attacking aircraft.

The Volvo Aero Corporation RM12 is a modular, fuel efficient, low bypass ratio afterburning turbofan in the 80 KN (18,000lb) thrust class. A digital engine control system automatically monitors the engine parameters and automatically switches on the back-up systems if required. A condition monitoring system registers the flight data. The air-to-air refuelling probe is retracted into the aircraft to retain the aerodynamic profile



The Gripen cockpit is dominated by three large, full color, Multi-Function Displays (MFDs) and a wide angle diffractive optics Head-Up Display (HUD) with a holographic combiner. A highly efficient human-machine interface has been integrated into the Gripen to substantially ease pilot workload, particularly in combat situations. This provides a Gripen pilot with outstanding situational awareness, ensuring unrivalled operational effectiveness. It also increases the time available for tactical decision-making allowing the pilot to use the aircraft and weapons system to maximum effect.A fully fused and integrated data flow, processed by all-digital systems, gives Gripen the power, intelligence and agility to fight the 'information war' - for the pilot as well as the commander - to the maximum operational effect. Gripen incorporates the world's most developed datalink, which increases situation awareness and combat effectiveness while shortening the sensor-to-shooter loop to near real-time.

The main functions of each display are as follows:Head-Up Display (HUD) - providing FLIR imagery and weapon aiming information superimposed on the outside world at all altitudes.Flight Data Display (FDD) - provides flight data and system status information about the engine, fuel and external stores. Horizontal Situation Display (HSD) - provides navigational and tactical mission data superimposed on an electronic map of selectable scale. Multi-Sensor Display (MSD) - presents information from the radar, FLIR imagery and other sensors. Flight and fire control data are also superimposed.

Saab Avionics is responsible for the EWS 39 electronic warfare suite, which has been ordered by the Swedish Air Force. EWS 39 is an integrated EW system that provides radar warning, electronic support measures and chaff and flare decoy dispensers.

The Gripen has seven external hardpoints for carrying payloads: one at each wingtip, two under each wing and one on the fuselage centreline. The air-to-air missiles include MBDA (formerly Matra BAe Dynamics) MICA, Raytheon AIM-120B AMRAAM and Lockheed Martin/Raytheon Sidewinder AIM-9L (Swedish Air Force Designation RB74). Sidewinder, mounted on the wingtips, is an all-aspect attack, short-range missile for enhanced dogfight capability. Air-to-surface missiles include the radar-guided Saab RBS15F anti-ship missile and Raytheon Maverick missile. Later versions of the aircraft for Sweden will be armed with the short-range Diehl BGT Defence IRIS-T air-to-air missile and the MBDA Meteor Beyond Visual Range (BVR) air-to-air missile. Deliveries of IRIS-T began in December 2005. Meteor is due to enter service in 2010. The Saab Bofors/MBDA Taurus KEPD 350 long-range standoff missile, with a range of 350km, has been successfully flight tested on the Gripen.The internally mounted 27mm Mauser high-energy gun can operate in an automatic radar-guided aiming mode. The stand-off dispenser is the DWF39 from EADS (formerly DaimlerChrysler Aerospace) and Bofors. The Bofors ARAK 70 rocket pod is cleared for carriage on the Gripen.

In terms of export, South Africa is to be the first receiver of the Gripen aircraft beginning in 2007. Several other countries have expressed interest in the system including Hungary, which has leased over a dozen Gripen for its air force.The Swedish Air Force has ordered 204 Gripen (including 28 of the two-seater version) for two operational squadrons, with deliveries continuing till 2007. In November 1998, the South African Air Force ordered 28 Gripen multi-role aircraft (19 single-seat and nine dual-seat). Denel Aviation of South Africa will produce part of the centre fuselage. First flight was in November 2005 and deliveries are to begin in 2008. In November 2001, Hungary signed a Memorandum of Understanding for the lease of 14 aircraft - 12 JAS 39A single-seat and two JAS 39B. In February 2003, Sweden and Hungary signed an amendment to the lease contract and both the single seated and the twin seated aircraft will be upgraded to C and D standard. The amendment also says that Hungary will purchase the aircraft after the lease period. Deliveries will begin in 2006.
In June 2004, the Czech Republic signed a leasing agreement with the Swedish Government for 14 new Gripen (12 single-seat JAS 39C and two two-seat JAS 39D) for a period of ten years. The aircraft were delivered between April and August 2005.