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Vertical Hummingbird

The Vertical Hummingbird is an American helicopter, produced by Vertical Aviation Technologies of Sanford, Florida that was introduced in 1991. The aircraft is supplied as a kit for amateur construction.

Design and development
The Hummingbird is a development of the certified Sikorsky S-52 that first flew in 1947, adapted to kit form. The aircraft features a single main rotor, a four-seat enclosed cabin, quadracycle landing gear and an option for skids. The two-bladed tail rotor has a diameter of . The aircraft has an empty weight of and a gross weight of , giving a useful load of . With full fuel of the payload is . ==Variants==
Variants
;VAT S-52-3:Prototype of the Hummingbird family, converted from an original Sikorsky S-52-3. ;Hummingbird 260L :Version powered by a six cylinder, air-cooled, four-stroke, dual-ignition Lycoming IVO-435 engine ;Hummingbird 300LS :Version powered by an eight cylinder, liquid-cooled, four-stroke, single-ignition General Motors LS7 V-8 automotive conversion engine, derated to ;Hummingbird 300L :Version powered by a six cylinder, air-cooled, fuel injected Lycoming IO-540 derated to ==Specifications (Hummingbird 300L) ==
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