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This photograph shows the ground crew connecting a battery pack to a S-51 to facilitate starting. What is interesting to note is the external tank that held the DDT mix for spraying the Tsetse Fly. This tank is then connected to a long pipe that ducted exhaust gas from the exhaust port. The helicopter thereby mixed the DDT with exhaust gases to facilitate spraying. (Photo: via SAAF Museum)
The results of the spraying modification. S-51, probably in Northern Zululand. Circa 1949. (Photo: via SAAF Museum) |
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Testing an innovative system to recover a downed pilot with a S-51. Here A/Cpl Robertson hangs in a harness from a seat type parachute. (Photo: via SAAF Museum)
A volunteer fitted with a seat type parachute harness being hoisted by a S-51. (Photo: via SAAF Museum) |
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