The PWN-11A used the same Super Loki rocket motor and temperature measuring instrument package as the PWN-10 probe, but had a smaller and lighter dart without a transponder unit.
Historical Essay © Andreas Parsch
Space Data PWN-11 Super Loki Datasonde
The PWN-11A uses the same Super Loki rocket motor and temperature measuring instrument package as the PWN-10 probe (q.v. for further details), but has a smaller and lighter dart without a transponder unit. Therefore the PWN-11A can reach a slightly higher apogee (80 km (50 miles) vs. 70 km (43 miles) of the PWN-10) but requires a tracking radar to get wind speed and direction data.
In the late 1990s, the PWN-11 (also known as Super Loki Rocketsonde) was still used by NASA Wallops for high-altitude weather recordings. The probe was then usually referred to as PWN-11D Datasonde(r), but this is a non-military designation (the suffix "D" was possibly chosen to mean "Datasonde").Specifications
Note: Data given by several sources show slight variations. Figures given below may therefore be inaccurate!
Data for PWN-11A:
|Length (incl. booster)||3.16 m (10 ft 4.5 in); dart: 1.16 m (45.7 in)|
|Diameter||Booster: 10.2 cm (4 in); dart: 4.0 cm (1.58 in)|
|Finspan||Booster: 20.3 cm (8 in); dart: 11.7 cm (4.62 in)|
|Weight (incl. booster)||29 kg (64 lb); dart: 6 kg (13.2 lb)|
|Ceiling||80 km (50 miles; 260000 ft)|
|Propulsion||Aero Dyne SR110-AD-1 Super Loki solid-fuel rocket; 25 kN (5520 lb) for 2.1 s|
 Richard B. Morrow, Mitchell S. Pines: "Small Sounding Rockets", Small Rocket Press, 2000
 Peter Alway: "Rockets of the World", Saturn Press, 1999
 "DOD 4120.15-L: Model Designation of Military Aerospace Vehicles", Department of Defense, 1974
 Upper Air Instrumentation Research Projects Website, NASA, 1997
 Edward J. Hopkins: "Meteorological Rockets", 1996
AKA: PWN-11; Super Loki Datasonde.