September 20, 2007
At the end of World War Two Igor Sikorsky was building the first helicopter with a " Tadpole " form or shape . He used his helicopter to……………….drop in on freinds .
September 20, 2007
Igor Sikorsky builds first helicopter
At the end of World War Two Igor Sikorsky was building the first helicopter with a " Tadpole " form or shape . He used his helicopter to……………….drop in on freinds .
What do you think ?
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