A PLA Naval Air Force (PLANAF) JJ-7 taking off. The JJ-7 was developed from the single-seat Chengdu J-7 fighter, and is generally similar to the Russian MiG-21U Mongol-A fighter-trainer.PLA海军航空兵（PLANAF）JJ-7起飞。JJ-7从单座成都J-7战斗机发展，而且通常类似俄国米格-21U Mongol-A战斗-教练机。

The JianJiao-7 (JJ-7) is the two-seat fighter-trainer version of the Chengdu J-7 (MiG-21 Fishbed) fighter. The aircraft was developed by Guizhou Aviation Industry Group Co (GAIGC) in the early 1980s. Several hundred JJ-7s are believed to be in service with the PLAAF and PLANAF for advanced fighter pilot training. Both Guizhou and Hongdu are developing the next generation advanced trainers as a successor to the JJ-7.

“歼教”（JianJiao）-7（JJ-7）是成都J-7（米格-21“鱼窝”）战斗机的双座战斗-教练型。飞机在1980年早期被贵州（Guizhou）飞机工业集团（GAIGC）发展。几百架JJ-7据信用于高级战斗机驾驶员训练在PLAAF和PLANAF服役。贵州和洪都两者正在发展下一代高级教练机，当做JJ-7后继型号。

PROGRAMME

Guizhou began to develop the two-seat trainer variant of the J-7 fighter, known as JJ-7, in 1981. The aircraft’s design resembles the Soviet MiG-21U Mongol-A. The first flight of the JJ-7 took place in July 1985, and the design certificate was issued in 1987. The batch production of the JJ-7 began in late 1987, with several hundred examples in several models delivered to the PLAAF/PLANAF as well as foreign customers.

计划

在1981年，贵州开始发展J-7战斗机的双座教练型，即是JJ-7。飞机的设计类似苏联米格-21U Mongol-A，JJ-7的第一次飞行在1985年7月进行，而且设计证明书在1987年发放。JJ-7的批量生产在1987年后期开始，几百架飞机交付给PLAAF/PLANAF和国外客户。

Because the JJ-7 has a similar aerodynamic performance and avionics configuration to the Chinese indigenous fighters such as J-7B, J-7C/D, J-7E/F, J-8A and J-8B, pilots of these fighters could complete most of their proficient development training and mission flight training subjects with the JJ-7 before they are fully qualified for operational flights. However, the JJ-7 lacks the sophisticated avionics and is not very manoeuvrable. Therefore it cannot fulfil the training requirements for the pilots of the latest fourth-generation fighters. The PLAAF is seeking a new generation advanced trainer with better performance and capability.

因为JJ-7与中国本国战斗机例如J-7B、J-7C/D、J-7E/F、J-8A和J-8B相似的空气动力学性能和航空电子设备配置。在他们完全有资格操作飞行之前，这些战斗机的驾驶员可以使用JJ-7完成大多数他们熟练成长训练和任务飞行训练科目。然而，JJ-7缺乏复杂的航空电子设备和没有非常好的机动性。因此它不能够为最新的第四代战斗机驾驶员实现训练需求。PLAAF正在寻找一种新一代高级教练机具有更好的性能和能力。

JJ-7 of the PLAAF 21st Air Division based in Mudanjiang AFB, Heilongjiang.PLAAF第21空军师的JJ-7在位于黑龙江省牡丹江（Mudanjiang）空军基地（AFB）。

As well as serving for training purpose, the JJ-7 could also be used for air interception and ground attack roles. The aircraft is armed with a 23mm cannon and two under-wing pylons that can carry short-range IR-guided air-to-air missiles or unguided rocket launch pods.

不仅服役用于训练用途，JJ-7也可以被用来空中拦截和对地攻击任务。飞机装备有23毫米机炮和二个机翼下挂架能携带近距IR引导空对空导弹或非制导火箭发射吊舱。

A JJ-7 fighter-trainer that in service with the PLAAF Flight Test & Training Centre based in Cangzhou AFB, Hebei. The aircraft is mainly used for tactic study and enemy simulation. 位于河北沧州空军基地的PLAAF飞行测试&训练中心的一架JJ-7战斗-教练机。飞机主要用于战略研究和模拟敌机。

VARIANTS

JJ-7 (FT-7): Prototype developed from the J-7 fighter. Generally similar to the MiG-21U Mongol-A
JJ-7A (FT-7A): Improved variant with HUD and updated avionics. First flew in November 1990.
FT-7P: Improved variant for the Pakistani Air Force
JJ-7B
JJ-7N
JJ-7PG: Also for the PAF

改型

JJ-7（FT-7）： 从J-7战斗机发展的原型。通常类似米格-21U Mongol-A
JJ-7A（FT-7 A）： 改进型使用HUD和更新航空电子设备。在1990年11月首次飞行。 
FT-7 P： 改进型用于巴基斯坦空军
JJ-7 B
JJ-7 N
JJ-7 PG： 也用于PAF

DESIGN

The JJ-7 is generall based on the J-7B fighter design, with the single-seat cockpit replaced by a tandem two-seat cockpit. The student pilot sits in the front seat and the trainer sits in the rear seat. The original single under-fuselage vertical stabilising fin of the J-7 is replaced by a two-fin design. As a result of the additional seat, the internal fuel tank capacity of the JJ-7 is smaller than that of the J-7B. An additional fuel tank is added on the back of the fuselage between the cockpit canopy and vertical tail. The single rear-hinged cockpit canopy of the J-7 is replaced by two side-hinged (open to right) canopies.

设计

JJ-7是基于J-7B战斗机设计，采用串列双座驾驶座舱代替单座位驾驶座舱。学员驾驶员在前座就坐和教练员在后座就坐。最初J-7单一的下机身垂直稳定翼被一个双翼设计代替。由于增加座位的结果，JJ-7的内部燃料箱容量比J-7B更小。一个附加的燃料箱被加在机身后部在座舱罩和垂直尾翼之间。J-7的整块后装铰链驾驶座舱罩被双侧装铰链（开到右侧）座舱罩代替。

Training equipments include the internal communication system between the trainer and the trainee; a retractable periscope fitted on the rear trainer seat; a fault simulation system which can control the aircraft to simulate various emergent situations; and a flight information recorder for analysis and trial. The aircraft is also fitted with improved air-conditioning.

训练设备包括教练员和学员之间的内部通信系统；一套伸缩式潜望镜在后面的教练员座位上安装、一套故障模拟系统能控制飞机去模拟各种不同的紧急情形；并且一套飞行信息记录器用于分析和测试。飞机也配备有改进的空调装置。

WEAPONS

The basic variant JJ-7 has a Type 23-3 23mm cannon with 60 rounds.

武器

基本型JJ-7有一门23-3型23毫米机炮携带60发弹药。

Three hardpoints are available for various payloads. Centre underfuselage station is pumped to carry a 720 liter drop tank. The two underwing stations could carry two PL-5 IR guided AAMs, unguided rocket pods or free-fall bombs. They can also carry two 480 litre or 720 litre drop tanks.

三个硬挂点可供各种不同的负载使用。机身下中心挂点携带一副720公升副油箱。二个机翼下挂点可以携带二枚PL-5 IR制导AAM、非制导火箭吊舱或自由落体炸弹。它们也能携带二副480公升或720公升副油箱。

The improved FT-7P carries a twin-30mm Type 30-1 cannon with 60 rounds per gun in the lower sides of the fuselage, and five hardpoints.

改进型FT-7P在机身下侧携带一门双管-30毫米30-1型机炮连同60发弹药和五个硬挂点。

AVIONICS

HUD, air data computer, KJ-8602 RWR.

航空电子装置

HUD，飞行数据计算机，KJ-8602型雷达告警接收机（RWR）。

POWERPLANT

The JJ-7 is powered by a Liyang (LMC) Wopen-7B(BM) turbojet, rated at 9,700 lb st (43.15kN) dry and 13,450 lb st (58kN) with afterburning.

动力装置

 JJ-7由一台黎阳（LMC）涡喷-7 B（BM）涡喷发动机提供动力，额定9,700磅（43.15 kN）干推力和13,450磅（58 kN）加力推力。

SPECIFICATIONS

Crew: Two (student, trainer)
Dimensions: Wingspan: 7.154m; Length: 13.950m; Height: 4.100m
Weight: Max take-off 8,500kg
Max Speed: Mach 2.05
Range: Ferry range 1,010km

规格

组员： 二名 （学员，教练员）
尺寸： 翼展 7.154 米；长度 13.950 米；高度 4.100 米
重量： 最大起飞 8,500 公斤
最大速度： 2.05 马赫
航程： 转场航程 1,010 公里