YJ-91

YJ-91 is an air-launched anti-ship missile developed in the People's Republic of China during the late 20th century. It drew on technology from the Kh-31 program and Chinese adaptations associated with China Aerospace Science and Industry Corporation, serving as a strike munition for platforms such as the Xian H-6 and Shenyang J-8. The weapon entered limited service amid regional tensions involving Taiwan Strait Crisis (1995–1996), South China Sea disputes, and increasing People's Liberation Army Navy modernization.

Design and Development

The missile's conceptual lineage traces to cooperative reverse-engineering and indigenous efforts inspired by captured or purchased components related to the Soviet Union's Raduga Kh-31 and interactions between firms like CASIC and research institutes connected to the China Academy of Aerospace Aerodynamics. Development programs involved testing ranges near Qinghai Lake, flight profiles evaluated with platforms such as the Xian JH-7, and avionics work linked to suppliers in Chongqing and Shenzhen. Political drivers included lessons from the Gulf War and doctrinal shifts after encounters with United States Navy power projection, prompting Chinese planners to prioritize high-speed, sea-skimming designs compatible with bomber and fighter-bomber fleets such as the Xian H-6 and Shenyang J-8II. Industrial partnerships encompassed legacy entities that emerged from the Chinese aerospace industry restructuring and coordination with establishments tied to the People's Liberation Army Air Force Academy.

Specifications

Typical loadout parameters reflected a supersonic solid-fuel rocket-ramjet hybrid or rocket-ramjet combination influenced by characteristics of the Kh-31P family. Performance figures often cited include speeds in excess of Mach 2–3, ranges reported variably depending on launch altitude and launch platform, and a warhead mass capable of inflicting mission-kill or hull-rupturing damage against frigate- and destroyer-sized vessels. Guidance suites combined active radar seekers derived from technologies studied alongside sensors from firms in Beijing and Nanjing, inertial navigation systems with inputs compatible with datalinks used by People's Liberation Army Air Force platforms, and terminal sea-skimming algorithms informed by research at institutions like the National University of Defense Technology. Aerodynamic control surfaces and seeker cooling systems were developed with engineering input from establishments in Xi'an and Harbin.

Operational History

Operational deployment was primarily within strike squadrons assigned to long-range bomber units based at airfields such as Lanzhou-area bases and coastal airbases facing the Taiwan Strait. The missile was integrated into training sorties involving cooperation with surface assets including Type 052 destroyer mock-ups and played roles in exercises simulating contingencies involving Republic of China Armed Forces and regional navies. Publicized parades and exhibitions in Zhuhai Airshow and defense expos demonstrated variants to delegations from countries in Southeast Asia and Africa, raising interest among foreign procurement offices. Operational evaluations considered the weapon's role in anti-access/area denial scenarios alongside systems like the DF-21D and integrated fires exercises with PLAN formations.

Variants

Variants reportedly adapted export-oriented electronics and seekers to comply with international procurement sensitivities, paralleling practices seen with other Chinese systems exported by China North Industries Group and China Electronics Technology Group Corporation. Versions tailored for fighter carriage were structurally modified for pylons on platforms such as the Shenyang J-11 and Chengdu J-10B, while bomber-capable variants featured extended-range fuel systems akin to developments observed in the Kh-31 family. Sensor suites evolved in later variants with improved active radar seekers and electronic counter-countermeasures influenced by research collaborations with institutes associated with the Aerospace Long March programs.

Export and Operators

Export diplomacy around the missile intersected with Chinese arms sales to nations including clients in Asia, Africa, and South America, following patterns set by earlier exports like the C-802 and YJ-83 families. Official operators included elements within the People's Liberation Army Air Force and, by licensed sale or bilateral transfer, air arms of several states that maintained defense procurement ties with Beijing, subject to regional embargoes and international export controls influenced by Wassenaar Arrangement dialogues and diplomatic considerations involving the United States. Demonstrations at venues such as the Airshow China in Zhuhai and procurement discussions at defense exhibitions in Abu Dhabi and Istanbul informed follower markets and operator interest.

Category:Air-to-surface missiles of the People's Republic of China