helidyne

Dear boxkite, after we speak about Kamov,Mil and Boeing-Vertol, can we speak about Gyrodyne; we know QH-50,DSN-1,DSN-2,DSN-3, HOG,GCA-2,GCA-5,GCA-7,GCA-41 (XRON-1) and GCA-59 (YRON-1). but there are anther nine projects to this company; GCA-3,GCA-8, GCA-9,GCA-21,GCA-24,GCA-32,GCA-33,GCA-35 and...