Hiller HJ-1 Hornet - fotod ja videod

Hiller HJ-1 Hornet
Riik	USA
Rolli	Eksperimentaalne helikopter
Esimene lend	1950
Ehitatud	18

2007 Hiller YH-32 Hornet (company designation HJ-1) was an American ultralight helicopter built by Hiller Aircraft in the early 1950s. It was a small and unique design because it was powered by two Hiller 8RJ2B ramjet engines mounted on the rotor blade tips which weigh 13lbs each and deliver an equivalent of 45 h.p. for a total of 90 h.p. Versions of the HJ-1 Hornet were built for the United States Army and the United States Navy in the early 1950s. The Hiller Museum identifies the YH-32A, named the Sally Rand, as the first helicopter gunship.

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2007 Hiller HJ-1 Hornet was an experimental helicopter developed by Hiller Aircraft in the late 1940s. It was powered by two ramjets mounted on the rotor tips, which eliminated the need for a tail rotor and reduced the torque on the fuselage. The HJ-1 was designed to test the feasibility and performance of tip-jet propulsion for helicopters, as well as to explore low-speed aerodynamics and stability issues.
HJ-1 tegi oma esimese lennu 1948. aastal ja saavutas maksimaalse kiiruse 90 miili tunnis ja ülemmäära 10 000 jalga. Tip-jet-süsteemil oli aga mitmeid puudusi, nagu kõrge kütusekulu, müra, vibratsioon ja piiratud juhtimisvõime. HJ-1 oli kalduvus ka mootori riketele ja rootori laba erosioonile. Projekt tühistati 1950. aastal pärast seda, kui ehitati ja katsetati ainult kahte prototüüpi. HJ-1 Hornet oli üks varasemaid näiteid tip-jet helikopteritest, mida hiljem kasutasid teised tootjad, näiteks Sud Aviation ja Fairey Aviation.