The Il -28 bomber was a product of the former Soviet Union in the late 1940s. 1947 was successfully developed, and 1950 was put into use. It is the country's first generation of light jet bombers. Il -28 bomber has a total length of 17.65m, a height of 6m, a wingspan of 2 1.45m, a wing area of 60.8m, an empty weight of12,890kg, a maximum fuel load of 6,600kg and a maximum takeoff weight of 2 1200 kg. The maximum horizontal flight speed is 900 kilometers per hour. The upper service limit is 12300m, and the climbing rate is 900m per minute. The maximum range is 2260 kilometers. The main weapons on the ship are communication radio, bombing radar, optical sight, friend or foe identifier, tail protector and so on. The condition of carrying weapons is that you can carry four 400kg or 12 250kg bombs or small tactical nuclear bombs. There are 8 pylons under the wing, which can hang rockets and bombs; Two HP-23 guns were installed on both sides of the nose and the turret at the tail. The maximum bomb load of the whole machine is 3000 kg. This machine has the advanced level of the 1950s.
On the basis of absorbing the design experience of Il -28, China researchers creatively carried out design research. Because, when the project started, Sino-Soviet relations had already broken down, and the former Soviet leadership even unilaterally tore up the signed contract. Without a contract, how can China get anything? So we can only refer to its model and some scattered data, and it is impossible to obtain accurate information and data of the Il -28 bomber. China's aviation engineers, almost from scratch, after three years' efforts, aimed at the standard of Il -28, developed China's first light bomber, which was successfully tested for the first time in September 1966 and named H -5 bomber. The flight test proves that the design is reasonable and meets the tactical requirements. After approval, it was put into mass production, and the troops began to be equipped the following year.
The shape and structure of H -5 aircraft are characterized by streamlined fuselage and small surface resistance. The wing is a cantilever single wing, and two engines are symmetrically installed under the two wings. The tail consists of a cantilever, swept back, high-set horizontal tail and a single vertical tail. Adopt retractable three-point landing gear. The power system consists of two turbojet engines. The total length of the aircraft is17.77m, the height of the aircraft is 6.2m, and the wingspan is 21.45m.. The maximum takeoff weight is 23,200 kg, and the maximum oil load is 6,600 kg. The maximum horizontal flight speed is 900 km/h; Service ceiling12500m, maximum range of 2400km, and maximum endurance of 4h15min.
The main airborne equipment includes: navigation and driving system magnetic compass, altimeter, horizon, autopilot, radio navigation system radio compass, radio altimeter and beacon receiver. Command station, communication station, interphone, etc. Communication system. Weapons and equipment mainly include: two 23 mm caliber guns loaded on the front fuselage and the rear turret; There is a bomb bay at the lower part of the middle fuselage, which can hang 1000 kg to 3000 kg of various bombs and 2 torpedoes. On the improved H -5 aircraft, devices that can hang various airborne missiles are added.
The performance of H -5 has reached the main data of the former Soviet Union's Il -28. In some places, it even surpassed the Il -28. All H -5 equipment, from engines and materials to weapons and equipment, was developed by China itself. The development of H -5 has brought China's aircraft manufacturing industry to a new level.
After the domestic H -5 bomber was equipped with troops, the research department did not stop. According to the problems raised in use and the development of science and technology, they constantly improved the H -5 and manufactured various types of H -5 aircraft. 1968, Harbin Aircraft Factory successfully refitted the H -5 aircraft capable of carrying nuclear weapons according to the requirements of its superiors. When the aircraft carried and dropped nuclear weapons in 1968+05438+02.7, it successfully completed the experimental nuclear weapons throwing under the superb technical control of the pilot. According to the requirements of users, aircraft manufacturers have also modified H -5 high-altitude reconnaissance aircraft and H -5 trainer aircraft on the basis of H -5. In 1980s, China Air Force was still using H -5 aircraft. In the large-scale military exercise in North China held in September, the 198 1 H -5 plane undertook the aerial mine-laying task, and its pilot completed the mine-laying task of 864 anti-tank mines in five seconds, which shows that the aircraft still has the tactical performance that meets the needs of the times. In the military parade on the 35th anniversary of the National Day, the H -5 aircraft, as the core of the flight formation, showed the majestic posture of the eagle in the air.