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A p p e a r a n c e
F r o m W i k i p e d i a , t h e f r e e e n c y c l o p e d i a
( R e d i r e c t e d f r o m P e n t e c o s t H X - 1 H o p p i - C o p t e r )
The Hoppi-Copter was a functional backpack helicopter developed by the American company Hoppi-Copters Inc. founded by Horace T. Pentecost in the 1940s.[1] contra-rotating rotors on a pole attached to a motorized backpack.[2] [3]
Later prototypes of the Hoppi-Copter included versions with the pilot in a sitting position, and were in effect miniature one-man helicopters of a more conventional design, though retaining the contra-rotating rotors and thus obviating a tail rotor .[1] [4] Ministry of Supply in the 102 and 104 models,[5] [3]
Variants
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Pentecost HX-1 Hoppi-Copter (Hoppi-Copter 100)
original back-pack version.
Hoppi-Copter 101
equipped with a seat and landing gear, proved that more development was necessary.[6]
Hoppi-Copter 102
framed, with seat for pilot.[4]
Hoppi-Copter 103
as the 102, but lighter with a more powerful engine and slightly greater rotor diameter
Hoppi-Copter 104
as the 103, with even greater rotor diameter[5]
Hoppi-Copter Firefly
[ edit ]
Data from Jane's All the World's Aircraft 1948[4]
General characteristics
Crew: One
Empty weight: 173 lb (78 kg )
Gross weight: 363 lb (165 kg )
Powerplant: 1 × Unknown 750 cm 3 in ) two stroke flat twin , 35 hp (26 kW ) at 4,500 rpm; 9.1:1 reduction gearing to rotors
Main rotor diameter: 2 × 16 ft (4.9 m )
Main rotor area: 402 sq ft (37.3 m 2
Performance
Maximum speed: 96 mph (154 km/h, 83 kn ) all performance figures estimated
Endurance: 1 hr at cruising speed
Service ceiling: 12,000 ft (3,700 m ) hover
Disk loading: 1.8 lb/sq ft (8.8 kg/m2
See also
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References
[ edit ]
^ a b "Pentecost HX-1 (Model 100) Hoppi-Copter" . Smithsonian National Air and Space Museum . Retrieved 2016-01-07 .
^ a b c Bridgman, Leonard (1948). Jane's All the World's Aircraft 1948 . London: Sampson, Low, Marston and Co. Ltd. p. 271c.
^ a b Bridgman, Leonard (1949). Jane's All the World's Aircraft 1949 . London: Samson, Low, Marston and Co. Ltd. p. 234c.
^ Bridgman, Leonard (1951). Jane's All the World's Aircraft 1951 . London: Samson, Low, Marston and Co. Ltd. p. 248c.
R e t r i e v e d f r o m " https://en.wikipedia.org/w/index.php?title=Hoppi-Copter&oldid=1227944017 " C a t e g o r i e s : ● H e l i c o p t e r s ● U n i t e d S t a t e s u l t r a l i g h t a i r c r a f t ● A i r c r a f t f i r s t f l o w n i n 1 9 4 0 ● C o a x i a l r o t o r h e l i c o p t e r s ● S i n g l e - e n g i n e d p i s t o n h e l i c o p t e r s H i d d e n c a t e g o r i e s : ● A r t i c l e s w i t h s h o r t d e s c r i p t i o n ● S h o r t d e s c r i p t i o n m a t c h e s W i k i d a t a ● S h o r t d e s c r i p t i o n i s d i f f e r e n t f r o m W i k i d a t a
● T h i s p a g e w a s l a s t e d i t e d o n 8 J u n e 2 0 2 4 , a t 1 6 : 4 9 ( U T C ) . ● T e x t i s a v a i l a b l e u n d e r t h e C r e a t i v e C o m m o n s A t t r i b u t i o n - S h a r e A l i k e L i c e n s e 4 . 0 ;
a d d i t i o n a l t e r m s m a y a p p l y . B y u s i n g t h i s s i t e , y o u a g r e e t o t h e T e r m s o f U s e a n d P r i v a c y P o l i c y . W i k i p e d i a ® i s a r e g i s t e r e d t r a d e m a r k o f t h e W i k i m e d i a F o u n d a t i o n , I n c . , a n o n - p r o f i t o r g a n i z a t i o n . ● P r i v a c y p o l i c y ● A b o u t W i k i p e d i a ● D i s c l a i m e r s ● C o n t a c t W i k i p e d i a ● C o d e o f C o n d u c t ● D e v e l o p e r s ● S t a t i s t i c s ● C o o k i e s t a t e m e n t ● M o b i l e v i e w
