SNCASO SO-1221 Djinn
The two-seat Djinn observation and liaison helicopter made its first flight on December 16, 1953. it will be the first French jet helicopter built in series. The propulsion system involved a Turbomeca Palouste gas turbine engine that drove a pump to produce compressed air, which was in turn fed into the aircraft's hollow rotor blades to exit at their tips, causing the blades to rotate. This system had the benefit of eliminating the need for an anti-torque tail rotor and thus the totality of the power is therefore used for lift. Unlike some of the experimental tip-jet designs of the era there was no combustion activity present at the exhaust nozzles installed at the ends of the rotor blades. Consequently, the nozzles produced little noise in operation. A total of 178 machines have been produced. Mainly used by the French Army Aviation (ALAT) and, incidentally, by Germany, Switzerland and the United States. In addition to the French military, other countries placed orders for the type amongst which Germany, Switzerland and the United States. A Belgian delegation will evaluate the Djinn at Dax but placed an order for the more conventional A√©rospatiale Alouette II of the same manufacturer. The latter marked the end of the Djinn.  
 
The Djinn broke two world altitude records for helicopters of all categories: 4789m on December 29, 1953 and 8492m on March 22, 1957. Some Djinns were used by civil operators for training or agricultural purposes, fitted with chemical tanks and spray bars. In Belgium the only example of Djinn in service will be registered OO-NVM between November 1964 and June 1966 and based in Grimbergen. Beet fields spraying tests were also carried out in Ledegem in May 1959 under the aegis of the Agronomic Institute of Gembloux.  
 
BAPA's Djinn  
 
Djinn c/n 71 left the factory of Rochefort on 15/10/1959. Received by the ALAT, that attributed it the serial FR-121, it had various assignments, including in North Africa, before finally being reformed in 1972. Stored by a Djinn specialist in Nouzonville before being acquired by a member of the BAPA.  
 
Status  
 
Complete machine requiring only a refresh of the cockpit and the installation of new plexiglas. Currently stored.

Ci-dessus: a Djinn on its trailer
Ci-dessous: only one  Djinn has been recorded in the belgian civil reggister, the  OO-NVM see here under at Grimbergen
Djinn c/n 71 now part of the BAPA collection.

characteristics :                       

Engine:Turboméca Palouste IVC de 240 cv
Engine starter: Lavalette 2  stroke
Lenght: 5,30 m 
Width : 1 ,90 m 
Height : 2,60 m 
Main rotor diameter : 11 m 
Empty weight : 360 kg 
Gross weight : 800 kg 
Maximum speed : 130 km/h 
Range : 190 km 
Service ceiling : 3100 m 
Fuel tank capacity : 220 l