|
gptkbp:instance_of
|
gptkb:helicopter
|
|
gptkbp:aircraft_operated
|
gptkb:Hughes_H-4_Hercules
gptkb:Howard_Hughes
gptkb:helicopter
approximately 30 minutes
cyclic and collective pitch control
|
|
gptkbp:armament
|
gptkb:none
|
|
gptkbp:artistic_influence
|
subsequent helicopter models
|
|
gptkbp:category
|
gptkb:aircraft
|
|
gptkbp:challenges
|
stability at high speeds
|
|
gptkbp:cockpit
|
two-seat tandem
|
|
gptkbp:controls
|
fly-by-wire
|
|
gptkbp:crew
|
2
|
|
gptkbp:date
|
gptkb:1952
|
|
gptkbp:design
|
compound helicopter
Hughes Aircraft Company engineers
|
|
gptkbp:developer
|
1950s
|
|
gptkbp:diameter
|
72 ft 0 in
|
|
gptkbp:educational_programs
|
Hughes Aircraft engineers
|
|
gptkbp:engine_type
|
gptkb:engine
|
|
gptkbp:features
|
variable rotor pitch
|
|
gptkbp:first_flight
|
gptkb:California
1953
1953-08-05
conducted by Hughes Aircraft Company
|
|
gptkbp:fuel_capacity
|
1,000 lb
|
|
gptkbp:has_feature
|
coaxial rotor system
|
|
gptkbp:height
|
18 ft 0 in
|
|
gptkbp:historical_significance
|
pioneered high-speed helicopter design
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Hughes XH-17
|
|
gptkbp:inspiration
|
for future rotorcraft innovations
|
|
gptkbp:is_designed_to
|
research and development
|
|
gptkbp:is_evaluated_by
|
by U. S. military
|
|
gptkbp:is_tested_for
|
demonstrated high-speed capabilities
|
|
gptkbp:landing_gear
|
retractable
|
|
gptkbp:legacy
|
advanced rotorcraft technology
|
|
gptkbp:length
|
60 ft 0 in
|
|
gptkbp:manufacturer
|
gptkb:Hughes_Aircraft_Company
|
|
gptkbp:max_speed
|
175 mph
|
|
gptkbp:max_takeoff_weight
|
20,000 lb
|
|
gptkbp:notable_event
|
first flight in 1953
|
|
gptkbp:number_built
|
gptkb:musical
|
|
gptkbp:objective
|
to achieve high speed and stability.
|
|
gptkbp:operational_history
|
limited to testing phases
|
|
gptkbp:origin
|
gptkb:United_States
|
|
gptkbp:power_output
|
gptkb:Lycoming_T53-L-13
|
|
gptkbp:propulsion
|
single engine
|
|
gptkbp:research_focus
|
high-speed flight characteristics
|
|
gptkbp:result
|
gptkb:1956
|
|
gptkbp:retirement_year
|
gptkb:1956
|
|
gptkbp:role
|
gptkb:aircraft
|
|
gptkbp:service_ceiling
|
10,000 ft
|
|
gptkbp:significance
|
first helicopter to exceed 150 mph
|
|
gptkbp:status
|
retired
|
|
gptkbp:wingspan
|
not applicable
|
|
gptkbp:bfsParent
|
gptkb:Hughes_Aircraft_Company
|
|
gptkbp:bfsLayer
|
4
|