OVERVIEW
The single-example Hanriot HD.8 was done in by its experimental engine fit - the Le Rhone 9R - which proved troublesome in development.
The single-example Hanriot HD.8 was done in by its experimental engine fit - the Le Rhone 9R - which proved troublesome in development.
YEAR: 1918
STATUS: Cancelled
MANUFACTURER(S): Hanriot - France
PRODUCTION: 1
OPERATORS: France (cancelled)
SPECIFICATIONS
Unless otherwise noted the presented statistics below pertain to the Hanriot HD.8 model. Common measurements, and their respective conversions, are shown when possible.
Unless otherwise noted the presented statistics below pertain to the Hanriot HD.8 model. Common measurements, and their respective conversions, are shown when possible.
CREW: 1
LENGTH: 20.18 feet (6.15 meters)
WIDTH: 31.50 feet (9.6 meters)
WEIGHT (EMPTY): 1,058 pounds (480 kilograms)
WEIGHT (MTOW): 1,543 pounds (700 kilograms)
ENGINE: 1 x Le Rhone 9R 9-cylinder air-cooled rotary engine developing 180 horsepower and driving a two-bladed propeller unit at the nose.
SPEED (MAX): 124 miles-per-hour (200 kilometers-per-hour; 108 knots)
RANGE: 249 miles (400 kilometers; 216 nautical miles)
ARMAMENT
ASSUMED:
2 x 7.7mm Vickers Machine Guns in fixed, forward-facing mountings over the nose synchronized to fire through the spinning propeller blades.
ASSUMED:
2 x 7.7mm Vickers Machine Guns in fixed, forward-facing mountings over the nose synchronized to fire through the spinning propeller blades.
VARIANTS
Series Model Variants
• HD.8 - Base Series Designation; single, flyable prototype completed.
Series Model Variants
• HD.8 - Base Series Designation; single, flyable prototype completed.
HISTORY
Detailing the development and operational history of the Hanriot HD.8 Single-Seat, Single-Engine Fighter Prototype. Entry last updated on 1/29/2019. Authored by Staff Writer. Content ©www.MilitaryFactory.com.
Detailing the development and operational history of the Hanriot HD.8 Single-Seat, Single-Engine Fighter Prototype. Entry last updated on 1/29/2019. Authored by Staff Writer. Content ©www.MilitaryFactory.com.
The HD.8 was a single-seat, single-engine biplane fighter prototype drawn up by the Hanriot concern of France during the World War 1 period (1914-1918). It was used in conjunction with the new Le Rhone 9R series 9-cylinder, air-cooled rotary engine of 180 horsepower which resulted in only a single example of this aircraft being completed largely due to issues with the experimental powerplant. Flight testing of the completed form was had from March to April of 1918 - 1918 being the last year of the war. However, the troublesome engine never proved itself satisfactory which, in turn, resulted in an official end of the program.
As completed (and flown), the aircraft borrowed established biplane fighter qualities of pervious Hanriot designs that began with the HD.1 of June 1916 and evolved through the capable HD.3 of June 1917. A biplane wing configuration was used with the sole pilot positioned under and aft of the upper wing member. The engine drove a two-bladed propeller unit at the nose in typical fashion and a traditional tail-dragger undercarriage configuration was used for ground-running. Dimensions included an overall length of 20.1 feet and wingspan of 31.5 feet. Empty weight was 1,060lb against an MTOW of 1,520lb.
With its Le Rhone engine, the aircraft was tested at speeds reaching 125 miles-per-hour and could stay aloft for some two hours on internal fuel.
As completed (and flown), the aircraft borrowed established biplane fighter qualities of pervious Hanriot designs that began with the HD.1 of June 1916 and evolved through the capable HD.3 of June 1917. A biplane wing configuration was used with the sole pilot positioned under and aft of the upper wing member. The engine drove a two-bladed propeller unit at the nose in typical fashion and a traditional tail-dragger undercarriage configuration was used for ground-running. Dimensions included an overall length of 20.1 feet and wingspan of 31.5 feet. Empty weight was 1,060lb against an MTOW of 1,520lb.
With its Le Rhone engine, the aircraft was tested at speeds reaching 125 miles-per-hour and could stay aloft for some two hours on internal fuel.
MEDIA
Our Data Modules allow for quick visual reference when comparing a single entry against contemporary designs. Areas covered include general ratings, speed assessments, and relative ranges based on distances between major cities.
Relative Maximum Speed Rating
Hi: 150mph
Lo: 75mph
This entry's maximum listed speed (124mph).
Graph average of 112.5 miles-per-hour.
City-to-City Ranges
NYC
LDN
LDN
PAR
PAR
BER
BER
MSK
MSK
TKY
TKY
SYD
SYD
LAX
LAX
NYC
Graph showcases the Hanriot HD.8's operational range (on internal fuel) when compared to distances between major cities.
Aviation Era
Useful in showcasing the era cross-over of particular aircraft/aerospace designs.
Unit Production Comparison
Comm. Market HI*: 44,000 units
Military Market HI**: 36,183 units
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