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21st Century Airships SPAS 13
 
 21st-SPAS-13
 
The semi-rigid helium SPAS 13 was a development of the earlier SPAS 1 and was designed to demonstrate the advantages of a spherical airship. The 43 ft (13.11 m) diameter spherical envelope is made of Spectra fabric with an inner helium containing envelope of Mylar film reinforced with Kevlar. The two-seat cockpit is internal to the envelope with panoramic windows in the envelope to provide an external view.
 
The SPAS 13 is powered by two 50 hp (37 kW) Rotax 503 piston engines on external struts, four vanes behind each engine are used to provide control by deflecting the thrust.
 
The first flight was on 13 May 1994.
 
Engines: 2 × Rotax 503, 50 hp (37 kW) each
Propellers: 3-bladed, 6 ft 0 in (1.83 m) diameter
Diameter: 43 ft 0 in (13.11 m)
Height: 45 ft 0 in (13.72 m) includes landing gear
Empty weight: 1,596 lb (724 kg)
Max takeoff weight: 2,403 lb (1,090 kg)
Maximum speed: 30 mph; 48 km/h (26 kn)
Cruise speed: 19 mph; 31 km/h (16.5 kn)
Crew: 1 pilot
Capacity: 1 passenger
 
 
 
 


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