Nanchang Q-6

Nanchang Q-6 Nanchang Q-5 to the chief designer Lu Xiaopeng led the design Q-6. Q-6 design is based on MiG -23 began air power and structures. The mid-20th century, 70, in addition to two MiG-21M, China has acquired from abroad two MiG-23MS, two MiG-23BN, two MiG-23U, and 10 AS-5 ground missiles. Therefore, China imitation through reverse engineering of its components, in particular, avionics, and R-29 turbojet engine. Lu Xiaopeng also visited a number of Chinese air force and naval officers, the aircraft needed to listen to their views. In February 1979, the final design presented to National Defense Science and Technology Commission.
Q-6 is a variable-geometry wing aircraft. It draws most of the MiG -23 rear structure, and with a belly and a high intake of a new home before the cockpit fuselage combination. Q-6 plans to use 122.4 kN thrust of the WS-6 engines, aircraft weight of 14.5 thousand kilograms, the biggest load of bombs 4500 kilograms, combat radius of 900 km is expected to flight performance in excess of MiG -23.
In the sixties and seventies of last century, variable-geometry wing widely favored by the world of military aviation, several models have variable-geometry wing aircraft in service. China has noticed this trend and began their own research. In the 20th century, the mid-60s, China has actively carried out variable-geometry wing of the development work. Q-6 develop early, some people advocate that China should be the next generation of Strike Fighter F-111 MiG -23, or a sample. From the 20th century until the mid-60s late 70s, China has at least four conceptual proposals for the use of variable-geometry wing, including the Shenyang Aircraft Company's J-10 heavy fighters (with the current J-10 without any contact), Q -6 and similar F-111 / SU -24 / "wind" of the attack aircraft.
Q-5, compared with, Q-6 with multi-improved avionics system, and intends to use the MiG-23BN certain components within the equipment as a reference. Q-6 to be used in avionics systems include laser target indicators, tail warning radar, radio altimeter and radio gyro plate, but also intends to introduce a terrain contour matching and tracking system and modern flat-panel displays. However, most of the avionics system from the Soviet Union, with the use of IC compared with Western avionics system is clumsy old.
In China, one of the biggest problems facing the power plant, which is troubled by a number of other projects was a common problem. WS-6 engine after further improvement, in 1983, named after the completion WS-6G, rated 138.2 kN thrust. The engine with the J-9 and J-13's history, as experienced several delays due to technical problems. MiG -23 finally decided to adopt the R-29-300 engine, developed through the reverse 410 plant named WP-15. This is a double rotor turbojet engine, maximum afterburning thrust of 125.2 kN, 85.1 kN maximum thrust without afterburner. However, WP-15 ultimately did not equip any of the Chinese air force planes, but as a technical reserve preserved.
Q-6 on the development in progress, the modern military aircraft and the increasing use of telex control system. China's aviation industry started to pay attention telex control system and spend a lot of time to learn foreign technology, as well as editing software. The final Q-6 using the highly automated control system telex. JH-7 also used a telex control system, which means that the introduction of the Chinese Air Force Su--27 production of the aircraft before the Xi'an of China's most advanced fighter.
In addition to power plant addition, Q-6 to overcome the biggest obstacle is the reverse development of variable-geometry wing structure. In this regard, Nanchang, engineers and technicians experienced a serious problem because we can not copy the original design of the Soviet Union. Said that China's first variable-geometry wing structure of quasi-plane than the original weight of at least 12%, thereby reducing the new aircraft load of bombs, range and combat radius.
The same period, because at that time the Chinese regarded as the greatest enemy of the Soviet Union in the changes in weapons and equipment, leading to the Chinese military needs to change. The Soviet Union deployed along the Sino-Soviet border, such as S-300 and the modified surface to air missiles like the 9M38. Siberian Military District dense air defense network, already in flight to China pose a serious threat. Q-6 It is believed that low-flying than the JH-7 are more vulnerable to Soviet air defense forces to combat.
This new situation requires re-design, because far from done with Q-6 can not meet operational requirements. Because at this time of the JH-7 design and development work far exceeds the Q-6, Air Force and Navy will be fully attention to Xi'an, a large-scale attack bombers. When comparing the two has its own advantages: JH-7 structure is more simple, more compact aerodynamic design, a larger load of bombs, combat radius of more distant; while Q-6 more mobile, lower unit price.
It is reported that, Nanchang continue to develop variable-geometry wings and, ultimately, under the leadership of Lu Xiaopeng After eight years of hard work, in the late 20th century, 80 achieved a breakthrough. It seems, Nanchang to introduce a new design. The program uses the lower part of the nose inlet and variable-geometry wings, power installations in the WS-6 single or WS-6G. However, due to China's aviation industry made great achievements, the program came too late, and therefore can not escape the fate of being abandoned. With the JH-7's successful flight test, Q-6 for all the development work is concluded.

南昌Q—6 南昌以Q—5主设计师陆孝彭为首设计Q—6。Q—6开始的设计是以米格-23的航空动力和结构为基础。20世纪70年代中期，除了两架米格—21M外，中 国还从国外获得两架米格—23MS、两架米格-23BN、两架米格-23U和10枚AS-5空地导弹。因此，中国通过逆向工程仿制其零部件，尤其是航电和 R-29涡喷发动机。陆孝彭还拜访了许多中国空军和海航的军官，听取他们对所需飞机的意见。 1979年2月，最终设计方案呈送给国防科委。
Q-6是一种变后掠机翼飞机。它借鉴了米格-23的大部分后部结构，与带机腹进气道和高置座舱的全新前机身相结合。Q—6计划采用推力122.4 千牛的WS-6发动机，飞机重量达14500千克，最大载弹量4500千克，作战半径预计900千米，飞行性能超过米格-23。
在上世纪六七十年代，变后掠机翼广受世界军用航空界的青睐，数款变后掠机翼战斗机相继服役。中国注意到这种趋势，并开始自己的研究。在20世纪 60年代中期，中国积极开展变后掠机翼的研制工作。Q-6研制初期，就有人主张中国的下一代攻击战斗机应以米格-23或F—111为样本。从20世纪60 年代中期直至70年代末期，中国至少有四个概念方案采用变后掠机翼，其中包括沈飞公司的J—10重型战斗机(与目前的J—10没有任何联系)、Q—6以及 类似F—111／苏-24／"狂风”的攻击机。
与Q—5相比，Q—6采用多方改进的航电系统，并打算用米格-23BN内装备的某些部件作为参 照。拟用于Q-6的航电系统包括激光目标指示器、机尾告警雷达、无线电高度表以及无线电陀螺盘，同时还打算采用地形匹配与跟踪系统以及现代化的平面显示 器。但由于大部分航电系统源于苏联，与使用集成电路的西方航电系统相比显得笨拙陈旧。
在中国，面临的最大问题之一就是动力装置，这也是困扰当时许多其它项目的通病。WS—6发动机经过进一步改进，于1983年完成后定名为WS- 6G，额定推力138.2千牛。该发动机与J—9和J—13的历史一样，由于技术问题经历数次推迟。最后决定采用米格-23的R—29-300发动机，经 过410厂的逆向研制被命名为WP-15。这是一种双转子涡喷发动机，最大加力推力125.2千牛，不加力最大推力85.1千牛。然而，WP-15最终没 装备任何中国空军的飞机，而是作为技术储备保存下来。
就在Q—6研制进行时，现代军用飞机越来越多地使用电传操纵系统。中国航空工业开始关注电传操纵系统并花大量时间汲取外国技术以及编辑软件。最终 Q—6使用了高度自动化的电传操纵系统.JH-7也采用了电传操纵系统，这意味着在中国空军引进苏-27之前西安生产的飞机是中国最先进的战机。
除了动力装置外，Q—6需要克服的最大障碍就是逆向研制变后掠机翼结构。在这方面，南昌的工程技术人员遇到了很大问题，因为不能照抄苏联的原始设计。据说中国的首个变后掠机翼结构至少比原准机重12％，因而降低了新机的载弹量、航程及作战半径。
同一时期，由于当时被中国视为最大敌人的苏联在武器装备方面的变化，导致中国军方的需求发生变化。苏联沿中苏边界部署了诸如S-300和9M38 那样的改进型地空导弹。西伯利亚军区密集的防空网早已对中国境内的飞行构成了严重威胁。Q-6据认为比低空飞行的JH-7更易遭到苏联防空部队的打击。
这种新形势要求重新设计，因为用远未完成的Q-6无法满足作战需求。由于此时的JH—7设计与研制工作远超于Q-6，空军和海军将全部注意力转移到西安的 大型攻击轰炸机上。两者相比各有优点：JH—7结构上更简单，气动设计更简洁，载弹量更大，作战半径更远；而Q-6机动性更强，单价更低。
有消息说，南昌继续研制变后掠机翼，最终在陆孝彭领导下经过8年努力，于20世纪80年代末期获得突破。看来，南昌设法推出一种新设计方案。该方案采用机 头下部进气道和变后掠机翼，动力装置采用单发的WS-6或WS-6G。然而，由于中国航空工业取得的巨大成就，该方案来得太晚，因而无法逃脱被抛弃的命 运。随着JH-7的成功试飞，Q-6所有研制工作就结束了。