Thursday, September 29, 2011

FANTAN A-5

A-5M is a single-seat, twin-engine supersonic fighter developed by the Nanchang Aircraft Company of China. Of the 60 aircraft of this class acquired by Pakistan, as of mid-1999 only 49 remained in service. Some are reportedly capable of carrying a single 5-20 kT nuclear bomb. It offers enhanced combat performance particularly at low and super-low altitude. It is the latest renovated type equipped with imported navigation and attack systems. It is used mainly to assist ground troops in attacking concentrated targets on land, key transportation points and ships near the coast. It can also intercept and fight enemy aircraft. It has two WP-6 after burning type of turbojet engines, a fuselage 15,65 meters long, a height of 4.33 meters, and a wingspan of 9,68 meters. Its maximum takeoff load is 11,300 kg. It carries a cannon in each wing, mounted near the fuselage, and it can be loaded with air to air weapons. It can carry bombs and canisters in its hold and various kinds of bombs, rockets and spare fuel tanks in the racks under its wings.

Tu-22M "BACKFIRE "

The BACKFIRE is a long-range aircraft capable of performing nuclear strike, conventional attack, antiship, and reconnaissance missions. Its low-level penetration features make it a much more survivable system than its predecessors. Carrying either bombs or AS-4/KITCHEN air-to-surface missiles, it is a versatile strike aircraft, believed to be intended for theater attack in Europe and Asia but also potentially capable of intercontinental missions against the United States. The BACKFIRE can be equipped with probes to permit inflight refueling, which would further increase its range and flexibility.
After designing the TU-22, the Tupolev design bureau started working on a new bomber that was based on the TU-22. Initially Tupolev considered modifying the TU-22 by changing the angle of the swept wings and equipping it with more powerful engines. However after developing the design "106" and various analysis, the design did not meet the flight characteristic requirements. Tupolev also developed the design "125". The aircraft was supposed have two VK-6 engines, a range of 4500-4800 km and an operating speed of up to 2500 km/h. The design provided for the use of titanium alloys and advanced electronic systems.
In 1962, the "125" design was examined by the Government but rejected, as the T-4 aircraft designed by KB Sukhoi was accepted. As an alternative to the T-4 aircraft, KB Tupolev developed the "145" airplane which was a modification of the TU-22. This airplane represented a multi-mode supersonic bomber which was capable of flying at subsonic speed at small altitudes and at supersonic speed to overcome air defenses. The range at subsonic speed was supposed to be 6000-7000 km. The wings are swept-back and had a variable geometry to meet the speed and range requirements. The aircraft should carry Kh-22 air-to-surface missiles which had already been deployed on other aircraft. After activities on the T-4 bombers were halted, KB Tupolev was officially charged with building the "145" aircraft in 1967. The new bomber was intended to have a maximum speed of 2300 km/h and a range of 7000 km without refueling. It received the designation TU-22M. The Tu-22M designation was used by the Soviets during SALT-2 arms control negotiations, creating the impression that the Backfire-A aircraft was a modification of the Tu-22 Blinder. This designation was adopted by the US State and Defense Departments, although some contended that the designation was deliberately deceptive, and intended to hide the performace of the Backfire. Other sources suggest the "deception" was internal, because this made it easier to get budgets approved. According to some sources, the Backfire-B/C production variants were believed to be designated Tu-26 by Russia, although this is disputed by many sources. At Tupolev the aircraft was designated the AM.

Tu-160 "BLACKJACK"

The Tu-160 is a multi-mission strategic bomber designed for operations ranging from subsonic speeds and low altitudes to speeds over Mach 1 at high altitudes. The two weapons bays can accommodate different mission-specific loads, including strategic cruise missiles, short-range guided missiles, nuclear and conventional bombs, and mines. Its basic armament of short-range guided missiles and strategic cruise missiles enables it to deliver nuclear strikes to targets with preassigned coordinates.In the future, after the aircraft is equipped with high-precision conventional weapons it may also be used against mobile or tactical targets.
The Tu-160 was the outcome of a multi-mission bomber competition, which included a Tupolev proposal for an aircraft design using elements of the Tu-144, the Myasishchev M- 18, and the Sukhoi a design based on the T-4 aircraft. The project of Myasishchev was considered to be the most successful, although the Tupolev organization was regarded as having the greatest potential for completing this complex project. Consequently, Tupolev was assigned to develop an aircraft using elements of the Myasishchev M-18 bomber design. The project was supervised by V.N. Binznyuk. Trial operations in the Air Forces began in 1987 with serial production being conducted at the Kazan Aviation Association.
The Tu-160 is characterized by low-mounted, swept-back, and tapered, variable geometry wings with large fixed-center section. The variable geometry wings (from 20 degrees up to 65 degrees) allows flight at supersonic and and subsonic speeds. Four NK-32 TRDDF [turbojet bypass engines with afterburners] of 25,000 kilograms-force power the T-160. The four turbofans, developed by OKB Kuznetsov in 1977, are mounted in pairs under the fixed-center section with square intakes and exhausts extending behind the wings trailing edges. The fuselage's slim structure is marked by a long, pointed, slightly upturned nose section and a stepped canopy. Tail flats are swept-back, tapered, and mid-mounted on the fin. The tail fin is back-tapered with a square tip and a fairing in the leading edge. The tail cone is located past the tail section. During the design of the aircraft, special attention was paid to reducing its signature. Measures were applied to reduce the signature of the engines to infra-red and radar detectors. Tests of these survivability measures were first tested on a TU-95 aircraft in 1980.
As the most powerful combat aircraft of the Soviet Air Forces, the T-160 flies at 2,000 km/hr and can exceed the 2,000 mark with a mission-specific load. The T-160 can climb 60-70 meters per second and reach heights of up 15,000 meters. The bomber can be refueled during flight by IL-78 and ZMS-2 tanker aircraft. The air refueling system consists of a probe and drogue airborne refueling system.
The TU-160 can carry up to 12 Kh-55 long range missiles and Kh-15 short range missiles. The weapons bays can accommodate different loads: carries various bombs: From fee falling nuclear and regular up to 1500 kg bombs. The bomber is not equipped with artillery armament.
The Tu-160 is equipped with a combined navigation-and-weapon aiming system, RID; [radar] for detecting targets on the ground and sea at long distances, an optical-electronic bombsight, an automatic terrain-following system, and active and passive radio-electronic warfare systems, as well as a probe-and-drogue airborne refueling system. It is equipped with K-36DM ejection seats. The cockpit instruments are the traditional electromechanical type. The aircraft is controlled with the aid of a central control column. The engine control throttles are located between the pilots' seats. There is a rest area, a toilet, and a cupboard for warming up food.

Wednesday, September 28, 2011

F-35

The F-35 is the result of the Defense Department's Joint Strike Fighter (JSF) program, which sought to build a multirole fighter optimized for the air-to-ground role with secondary air-to-air capability. The JSF requirement was to meet the needs of the Air Force, Navy, Marine Corps and allies, with improved survivability, precision engagement capability, and reduced life cycle costs. By using many of the same technologies developed for the F-22, the F-35 has the opportunity to capitalize on commonality and modularity to maximize affordability.
The Lockheed Martin X-35 was chosen over the competing Boeing X-32 primarily because of Lockheed’s lift-fan STOVL design, which proved superior to the Boeing vectored-thrust approach. The lift fan, which is powered by the aircraft engine via a clutched driveshaft, was technically challenging but DoD concluded that Lockheed has the technology in hand. The lift fan has significant excess power which could be critical given the weight gain that all fighter aircraft experience.
Lockheed Martin developed four versions of the Joint Strike Fighter to fulfill the needs of the Navy, Marine Corps, Army, Air Force and the United Kingdom Royal Air Force and Navy. All versions have the same fuselage and internal weapons bay, common outer mold lines with similar structural geometries, identical wing sweeps, and comparable tail shapes. The weapons are stored in two parallel bays located aft of the main landing gear. The canopy, radar, ejection system, subsystems, and avionics are all common among all different version as is the core engine which is based on the F119 by Pratt & Whitney.
Additional systems on the F-35 include:
  1. Northrup Grumman advanced electronically scanned array (AESA) multi-function radar
  2. Snader/Litton Amecon electronic countermeasures equipment
  3. Lockheed Martin electro-optical targeting system
  4. Northrup Grumman distributed aperture infrared sensor (DAIRS) thermal imaging system
  5. Vision Systems International advanced helmet-mounted display