Igor Sikorsky (1889-1972) founded company as Sikorsky Aero Engineering
Sikorsky S-38
Corporation March 5,1923. As young Russian built first helicopter in 1909, but no flight achieved. In 1912 was appointed to technical post with Russo-Baltic Wagon Works. Pioneered very large four-engined
Sikorsky S-40
aircraft and continued development during First World War. After forming U.S. company built large twin-engined S-29A. Numerous experimental and production airplanes in late 1920s and 1930s, and in October 1928 Sikorsky
Sikorsky S-42 ''Clipper''
S-42 "Clipper"
Aviation Corporation founded, becoming in 1929 a division of United Technologies Corporation (so remaining). Name Sikorsky truly reestablished by flying-boats and amphibians. S-38 twin-engined amphibian preceded S-40 four-engined flying-boat of 1931.
Sikorsky VS-300
Sikorsky VS-300
S-42 had full-length hull, set new records, and pioneered trans-ocean commercial flying.

Sikorsky still lured by helicopter idea, and on September 14,1939 flew his VS-300 in controlled flight. VS-300 much modified
Sikorsky R-4
Sikorsky R-4
in development. XR-4 of 1942 was first practical U.S. military helicopter. Later types immensely varied, including: S-51 (first flown August 1943 as prototype for military tandem two-seat R-5, later
Sikorsky S-51 / H-5 / HO3S
Sikorsky S-51 / H-5 / HO3S
also going into production in four-seat S-51 commercial form), two-seat S-52 (first flown 1947 and developed into three/four-seat model), S-55 (first flown November 1949 and with the engine in the fuselage
Sikorsky S-55 ''Chickasaw'' / HO4S / HRS
Sikorsky S-55 "Chickasaw" / HO4S / HRS
nose to keep the main cabin clear for 12 troops or passengers) and S-58 (first flown March 1954), all establishing world fame for Sikorsky helicopters, while S-61 (first flown March
Sikorsky S-58 / HSS ''Seabat'' / HUS ''Seahorse'' / CH-34 ''Choctaw''
Sikorsky S-58 / HSS "Seabat" / HUS "Seahorse" / CH-34 "Choctaw"
1959) formed the basis for many of the western world's most important amphibious anti-submarine helicopters in the SH-3 Sea King series.

Currently specializes in intermediate/heavy helicopters, although jointly developing the RAH-66
Sikorsky S-61 / SH-3 ''Sea King''
Sikorsky S-61 / SH-3 "Sea King"
Comanche tandem two-seat multirole battlefield helicopter with Boeing (first flown January 1996) for U.S. Army service from the year 2006. Current range includes S-70/H-60 Black Hawk (first flown October 1974) as
Sikorsky S-65
Sikorsky S-65
military assault helicopter for 11- 14 equipped troops, with variants for electronic warfare, combat rescue, special operation and more, with optional armament via external stores support system stub-wings; SH-60 Seahawk naval
Sikorsky S-70
Sikorsky S-70
antisubmarine and antiship derivative of Black Hawk, also capable of transport, medevac, communications, search and rescue, and more (first flown December 1979) and with its own variants including Jayhawk medium-range recovery
Sikorsky S-76
Sikorsky S-76
multi-mission helicopter for the U.S. Coast Guard; S-76 civil and military 14-seat twinturboshaft helicopter (first flown March 1977); H-76 Eagle armed multirole and naval variant of S-76; triple-turboshaft CH-53E Super Stallion
Boeing/Sikorsky RAH-66 ''Comanche''
Boeing/Sikorsky RAH-66 "Comanche"
heavy transport and amphibious assault helicopter (first flown March 1974), with MH-53E Sea Dragon U.S. Navy airborne mine-countermeasures variant, and S-80 export model; and latest S-92 Helibus of 1998 first appearance as a civil/military medium twinturboshaft helicopter for up to 22 passengers.

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S-42 "Clipper"
S-43 / JRS