The QQW or DQ (Da Qui) were two balloon satellites for studies of the density of the upper atmosphere.
The two satellites were launched on 3 September 1990 together with the prime payload Feng Yun 1B on a CZ-4 rocket. The satellites weighted 2.6 kg and 3.3 kg and were deployed from the CZ-4 upper stage using a special adapter.
|Type / Application:||Research, air density|
|Mass:||2.6 kg (#1); 3.3 kg (#2)|
|QQW 1 (DQ 1)||1990-081B||03.09.1990||TY LC-7||CZ-4||with Feng Yun 1B, QQW 2|
|QQW 2 (DQ 2)||1990-081CB||03.09.1990||TY LC-7||CZ-4||with Feng Yun 1B, QQW 1|