The Hiro H4H (or Hiro Navy Type 91 Flying Boat) was a 1930s Japanese bomber or reconnaissance monoplane flying boat designed and built by the Hiro Naval Arsenal for the Imperial Japanese Navy.
First appearing in 1931 the H4H1 was a twin-engined high-wing monoplane flying-boat. Powered by two 500 hp (597 kW) Hiro 91-1 engines strut-mounted above the wing it was produced by the Kawanishi company and entered service in 1933.[1]
An improved version of the design, the H4H2, followed into production two years later. The H4H2 has re-designed twin fins and rudders and was powered by two 800 hp (597 kW) Myojo radial engine. A total of 47 of both versions was produced.[1]
Both the H4H1 and H4H2 remained in front-line naval service through the 1930s.
Variantsedit
H4H1 (Hiro Navy Type 91 Model 1 Flying Boat)
Variant powered by two 500hp (597kW) Hiro 91-1 engines.
H4H2 (Hiro Navy Type 91 Model 2 Flying Boat)
Variant powered by two 800hp (597kW) Myojo radial engines.
Illustrated Encyclopedia of Aircraft (Part Work 1982-1985). Orbis Publishing.
December 15, 2023
hiro, hiro, navy, type, flying, boat, 1930s, japanese, bomber, reconnaissance, monoplane, flying, boat, designed, built, hiro, naval, arsenal, imperial, japanese, navy, h4hrole, patrol, flying, boatnational, origin, japanmanufacturer, hiro, naval, arsenalfirst. The Hiro H4H or Hiro Navy Type 91 Flying Boat was a 1930s Japanese bomber or reconnaissance monoplane flying boat designed and built by the Hiro Naval Arsenal for the Imperial Japanese Navy H4HRole Patrol flying boatNational origin JapanManufacturer Hiro Naval ArsenalFirst flight 1931Introduction 1933Primary user IJN Air ServiceNumber built 47 Contents 1 Design and development 2 Variants 3 Operators 4 Specifications H4H2 5 See also 6 References 6 1 Notes 6 2 BibliographyDesign and development editFirst appearing in 1931 the H4H1 was a twin engined high wing monoplane flying boat Powered by two 500 hp 597 kW Hiro 91 1 engines strut mounted above the wing it was produced by the Kawanishi company and entered service in 1933 1 An improved version of the design the H4H2 followed into production two years later The H4H2 has re designed twin fins and rudders and was powered by two 800 hp 597 kW Myojo radial engine A total of 47 of both versions was produced 1 Both the H4H1 and H4H2 remained in front line naval service through the 1930s Variants editH4H1 Hiro Navy Type 91 Model 1 Flying Boat Variant powered by two 500hp 597kW Hiro 91 1 engines H4H2 Hiro Navy Type 91 Model 2 Flying Boat Variant powered by two 800hp 597kW Myojo radial engines Operators edit nbsp JapanImperial Japanese Navy Air ServiceSpecifications H4H2 editData from 1 General characteristicsLength 54 ft 4 25 in 16 57 m Wingspan 76 ft 11 5 in 23 46 m Height 20 ft 5 in 6 22 m Wing area 890 20 sq ft 82 70 m2 Empty weight 10 280 lb 4 663 kg Gross weight 16 534 lb 7 500 kg Powerplant 2 Myojo radial piston engine 800 hp 597 kW eachPerformance Maximum speed 145 mph 233 km h 126 kn Range 793 mi 1 260 km 689 nmi Service ceiling 11 880 ft 3 620 m Armament 1 7 7mm 0 303in Machine Gun mounted over bow cockpit 2 7 7mm 0 303in Machine Guns mounted over midship cockpit 2 250kg 551lb bombsSee also editRelated lists List of military aircraft of Japan List of seaplanes and flying boatsReferences editNotes edit a b c Orbis 1985 p 2173 Bibliography edit Illustrated Encyclopedia of Aircraft Part Work 1982 1985 Orbis Publishing Retrieved from https en wikipedia org w index php title Hiro H4H amp oldid 1073636894, wikipedia, wiki, book, books, library,
