Talk:S-51J/@comment-2003:E5:6F2F:1ED9:B850:C9F8:D79B:5533-20190327174854/@comment-32647310-20190327182130

I really wouldn't consider it to be a WWII design.

While the Sikorsky H-5 wasn't formally introduced until early 1945, the S-51 wasn't introduced until 1946 and the entirety of its service career is strictly post WWII.

In fact, any information I have on this helicopter tells me that it is as a Post War aircraft... so yeah, we have some actual Post WWII equipment now.