Sikorsky S-56 Original Drawings

[hesham]

Hi,


the Sikorsky S-56 was offered to the Navy in three options of versions,first one was
a helicopter,second was piston engined compound aircraft and third was turboprop
compound aircraft.

http://www.sikorskyarchives.com/pdf/News=Web%20Oct%20061.pdf

 

[TsrJoe]

Sikorsky S.56 passenger variant ? ... https://api.parliament.uk/historic-hansard/commons/1954/may/12/sikorsky-s56-helicopter?fbclid=IwAR3NGNeA1XCptR9ophVT-Q5qfqkgcH6Vq-eZaWjo5bm2pEedTX6-I57gpF8

 

[hesham]

Maybe that's right my dear TsrJoe ?.

 

[Hood]

Norman Dodds, the MP asking the question doesn't seem to have had an aviation background. He does seem to have been a colourful character though.
https://en.wikipedia.org/wiki/Norman_Dodds

Perhaps he was lobbying? Westland had tried to secure a licence for the S-56 in 1954 but the Ministry of Supply did not support their proposal. It took another 4 years for them to get the licences for the main transmission elements and begin their own private venture. In hindsight, had the Westminster been started 3-4 years earlier would have had a greater chance of success? A what-if question but an interesting one.

 

[TsrJoe]

a further snippet re a passenger S.56 ... https://www.flightglobal.com/FlightPDFArchive/1954/1954%20-%202738.PDF

 

[TsrJoe]

https://www.sikorskyarchives.com/S+56%20HR2S-1H-37.php

 

[hesham]

https://www.sikorskyarchives.com/S+56%20HR2S-1H-37.php

Thank you my dear TsrJoe.

 

[Kiltonge]

Sikorsky six-bladed experimental rotor intended for S-56 development. Anticipated that it would increase the maximum speed of the '56 by 30 knots, impressive as at the time it was the fastest helicopter in the World at 140 knots.