Their brain activity had also changed.
==Seznam tandem helikopterjev==* HRP Rescuer (1945)* Piasecki PV-14 (1948)* HERC Jov-3 (1948)* Piasecki H-21 (1949)* McCulloch MC-4 (1951)* Chu CJC-3* Piasecki H-25/HUP Retriever (1952)* Jakovljev Jak-24 (1952)* Bristol Belvedere (1952)* Piasecki H-16 (1953)* Piasecki H-21 upgrade (1953)* Bell HSL (1953)* Boeing Vertol 107-II (1958)* Boeing Vertol CH-46 Sea Knight (1960)* CH-47 Chinook (1961)* Jovair Sedan 4A (1963)* Fliper Beta 200 (1966)* Fliper Beta 400 (1967)* Boeing Vertol XCH-62 (v 1970ih nedokončan)* Boeing Model 234 (1981)* Boeing Model 360 (1987)==Glej tudi==* Koaksialna rotorja* Sinhropter* Transverzna rotorja* NOTAR* Repni rotor* Žirodin* Helikopter* Rotorski zrakoplov==Sklici in reference==