Pitcairn XO-61

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The Pitcairn XO-61 was an American autogyro designed by Pitcairn Aircraft. One of the last autogyros produced, in competition with the Kellett YO-60 and the Sikorsky R-4, it fell victim to cooling problems with its rear-mounted engine and the coming of the helicopter with its ability to hover.^[1]^[2]

Also known by the company model number PA-44 and the contract designation MX-157,^[3] the contract for the XO-61 was taken over by G&A Aircraft upon G&A's acquisition of Pitcairn Aircraft.^[4]

References

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Notes

↑ Gregg, E. Stuart, "Above & Beyond: Jump Ship". Air & Space Smithsonian, March 2001
↑ Harris, Franklin D. An Overview of Autogyros and The McDonnell XV-1 Convertiplane, NASA/CR—2003–212799. NASA Ames Research Center, October 2003
↑ Cully, George & Andreas Parsch: MX-1 to MX-499 Listing, designation-systems.net
↑ Wings of Freedom Winter 2007/2008, Volume 22 Number 4, Delaware Valley Historical Aircraft Association.

Bibliography

Cully, George & Andreas Parsch: MX-1 to MX-499
Gregg, E. Stuart, "Above & Beyond: Jump Ship". Air & Space Smithsonian, March 2001 Listing, designation-systems.net
Harris, Franklin D. An Overview of Autogyros and The McDonnell XV-1 Convertiplane, NASA/CR—2003–212799. NASA Ames Research Center, October 2003
Wings of Freedom Winter 2007/2008, Volume 22 Number 4, Delaware Valley Historical Aircraft Association.

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Pitcairn XO-61

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References