HQ-7

HQ-7
FM-90 of Bangladesh Air Force
Type	Surface-to-air missile
Place of origin	People's Republic of China
Production history
Designer	Changfeng Electromechanical Technology Design Institute
Specifications
Mass	84.5 kg (186 lb)
Length	3 m (9.8 ft)
Diameter	0.156 m (6.1 in)
Engine	solid fuel rocket
Operational range	8 kilometres (5.0 mi) (slant, fast target)[1] 15 kilometres (9.3 mi) (slant, slow target)[1]
Guidance system	Command-guided version.[2] Infrared homing[1]
Launch platform	Transporter erector launcher[1] Ship[1]

The HQ-7 (simplified Chinese: 红旗-7; traditional Chinese: 紅旗-7; pinyin: Hóng Qí-7; lit. 'Red Banner-7'; NATO reporting name: CH-SA-4)^[3] is a short-range surface-to-air missile (SAM) from the People's Republic of China. It was reverse-engineered by the Changfeng Electromechanical Technology Design Institute from the French R-440 Crotale SAM.^[2] It entered service in the early 1980s.^[1]

A ground battery consists of a short-range radar and three launchers. Each launcher has four or eight missiles.^[1]