Improvement and modification of Chujiao 6

The prototype of-1 was first taught: a Doris-б V air-cooled piston engine in Czechoslovakia was installed.

Hong Zhuan 502M prototype: install a к- 1 1к star air-cooled piston engine.

The prototype of JIAO -6: A аи- 14 р engine was installed and five engines were manufactured.

Beginner -6 mass production type: piston -6(HS-6) engine is installed and put into mass production initially.

Initial delivery -6A: Install a piston -6A (HS-6A) engine to increase power.

1963 65438+ 10/0/0/0, the design room of 320 plant and the design department of Zhuzhou 33 1 plant put forward the modification idea of increasing the engine horsepower, and demonstrated and coordinated the modification scheme of the engine under the auspices of the Fourth Bureau. 1961September 1 1, No.3 engine department and No.4 engine department issued the transformation task with "(63) Jimi Zi No.0 1297". 196 1 year1month 14 days, the third engine department approved the aircraft modification scheme of No.320 plant and began the modification design. With the joint efforts of the two factories, 1964 completed all the ground and flight qualification tests of the modified piston 6A engine and the aircraft modified piston 6A engine in Factory 33/KLOC-0 and Factory 320 respectively on September 28th. The test pilot is Sun. The flight test results show that the rated speed of the modified engine is higher than that of the prototype, and the maximum power of the engine is increased from 260 HP to 285 HP. The rated power is increased from 220 horsepower to 270 horsepower; The overall size of the engine and the weight of the aircraft remain unchanged, and the maximum horizontal flight speed of the aircraft increases10 km/h; The maximum climb rate is increased by 65438 0.6m/s, and the time is shortened by about 30%. The service limit has been increased by 1000 meters; Range increased by 40 kilometers; The phenomenon of altitude drop in vertical flight and aerobatic flight has been greatly improved. This modified plane was later named "Chujiao -6A". Because of its remarkable advantages, at the beginning of 1965, all Chujiao -6A aircraft were mass-produced and equipped with troops according to 18 batch of A-type aircraft.

Chujiao -6 plateau type: because the piston -6 A engine installed on Chujiao-6 aircraft has poor high-altitude performance, it can not meet the needs of plateau area. At the beginning of 1965, 320 factory put forward the scheme of installing exhaust gas turbocharger, and at the beginning of 1967, a testing machine was modified for ground and flight tests. By September 1967, * * * had flown 39 sorties for 30 hours. The main problem is that the temperature of engine cylinder head is high, which affects flight performance. Later, due to ten years of turmoil, the renovation work stopped. Primary -6 B:

1On September 5th, 964, the Military Science Research Department of the Air Force put forward the requirement of installing a weapon system on the Chujiao -6 aircraft with document (64)220. 19641July 320 Factory reported the revised design scheme with document (64) Jianwu 424. The improvement scheme is as follows: two шкас 7.62mm aviation machine guns with ammunition 120~ 180 rounds are installed on the aircraft; Three вдд 2-48 bomb racks, sights and camera guns were modified, which can hang 10 ~ 25kg bombs.

At the beginning of 1965, two planes were modified and handed over to the air force attack aviation unit for test flight. /kloc-0 completed the appraisal test flight in June, 965. 196565438+1Oct. 2 1, the representative office of the 320 factory and the troops stationed in the factory reported the appraisal report on the installation of ordnance system with "(65) Factory Technical Joint Secret No.347". The weight of the improved Chujiao -6 aircraft increased by 1 13kg, and the drag also increased slightly. 1966 * * * Made for the Army 10 aircraft. Haiyan (type 6 C for beginners)

Multi-purpose civil aircraft based on modified design of Chujiao -6. The aircraft is piloted by a single person, and its other performance and structure are the same as those of the Jiao -6 aircraft. After the spraying equipment is installed, it can be used for agricultural and forestry spraying, aerial photography or inspection. The aircraft was designed and modified in May 1985, and made its first flight in August 1985. Haiyan Aircraft is an agricultural multi-purpose professional aircraft developed by Hongdu Aircraft Industry Company (referred to as Hongdu Aviation, formerly Nanchang Aircraft Factory) on the basis of J-6. /kloc-0 made its first test flight in August, 1958, and/kloc-0 was designed and put into mass production in June, 1962. 1979 won the national quality gold medal, and has produced more than 2,000 aircraft since the 1960s. In order to meet the needs of different users, a variety of types have been developed on the basis of the prototype. Pilots will enter the jet trainer for advanced training after the primary training of Haiyan propeller aircraft meets the requirements. In order to meet the needs of users, Hongdu Airlines is modifying the equipment on the Haiyan propeller plane. The new radio station is 123, and the radio compass is newly developed WL-5B. The on-board communication adopts oral communication, and a fault simulation and heating system is added to meet the requirements of modern flight training.

Haiyan propeller aircraft is not only used for pilot training, but also adopted by aviation clubs in Australia, the United States, Hong Kong, Macao and other countries and regions for its excellent comprehensive performance. Therefore, the so-called "beginner -6" popular in American civil aviation is actually the statement of Haiyan aircraft.

Haiyan aircraft is an all-metal monocoque structure, with an all-metal double-beam lower wing and flaps and ailerons at the trailing edge of the wing. The tail consists of horizontal stabilizer, elevator, vertical stabilizer, rudder and fairing. The front three-point landing gear can be retracted, the front landing gear is strut type, the main landing gear is semi-rocker type, the main landing gear shock absorber is suitable for grass landing and landing, and the main wheel can brake; Install a piston -6-star air-conditioning 9-cylinder piston engine, which matches the "Fenyi" 530 automatic variable-pitch Shuang Ye all-metal propeller; The cockpit is divided into a front cabin and a rear cabin, and the front cabin and the rear cabin have linked double control mechanisms and various indicating instruments; The plane is equipped with flight instruments such as altimeter, speedometer, vertical speedometer, horizon, magnetic compass and engine tachometer, as well as radio equipment such as ultrashort wave radio and radio compass.

Haiyan aircraft is mainly used for pilot screening, primary training and as an aviation club performance machine in the training system. It is a necessary model for all kinds of pilots to get started. The aircraft has excellent flying performance and handling quality, and can perform aerobatics. In addition, the aircraft has excellent cost performance, durability, safety, reliability and maintainability, and can take off and land on the dirt runway. These characteristics constitute the strong competitive advantage of Haiyan aircraft in the field of primary trainer.

This machine is not only used in China, but also exported to more than ten countries, which is well received by users. "Haiyan" can be modified into three models: A, B and C according to user's requirements. Haiyan B is a pure agricultural machinery, which is used for spraying pesticides, fertilizing, sowing and forest fire fighting. The minimum working height can reach 1.5m, the minimum working speed 155km/h, and the spraying width is 30m. Model C is a patrol observation machine, which is used for air patrol, fishing situation detection, fishery administration, forest protection and fire prevention, flood control command, geological exploration, geodesy and aerial photography. In order to extend the battery life, a 50-liter fuel tank was installed around the leading edge of the middle wing. Type A is a multi-purpose machine, which has the characteristics of both type B and type C machines. In addition, Haiyan can also be converted into an aerial sightseeing machine. Haiyan can take off and land on dirt runways or grass. After technical transformation, Hongdu Airlines has an annual output of 60 Haiyan aircraft. The main users are aviation schools, clubs and private users exported abroad. Chu religion -6 has been exported to many countries since 1963, such as Albania, Bangladesh, Cambodia, North Korea, Tanzania and Zambia. By the end of 1996, * * had produced more than 2,000 Haiyan aircraft, of which about 200 were exported.

The export details of CJ-6A are as follows: Albania 15, Bangladesh (35), North Korea (over 50) and Zambia 12. The quantity exported to Tanzania and Cambodia is unknown. In mid-2002, Sri Lanka purchased 10 CJ-6A for its air force.

Up to now, it is still produced in small batches, and there are new models such as CJ-6G. This model has made some effective improvements: increasing engine power, increasing fuel tank capacity, installing western avionics, strengthening fuselage structure, having heavier takeoff weight and more effective hydraulic brakes.

More than 40 years have passed, and the Chujiao -6 aircraft is still serving in different flight departments at home and abroad. Foreign aviation circles bought a large number of retired Chujiao -6 aircraft from China as flight show planes. These planes were painted brilliantly and became "stars" in the international aviation festival. Foreign pilots' evaluation of Junior Education -6 is: "Although it is a primary trainer, it makes people feel like flying on a fighter plane."