avia.wikisort.org - Aeroplane
The Grigorovich I-1 was a Soviet fighter prototype of the 1920s. It was the first land-based fighter developed by the Grigorovich Design Bureau, who had previously concentrated on water-borne aircraft such as the Grigorovich M-5 of 1914.
 | This article includes a list of references, related reading or external links, but its sources remain unclear because it lacks inline citations. (August 2013) |
| Grigorovich I-1 | |
|---|---|
| Role | Fighter |
| National origin | Soviet Union |
| Manufacturer | Grigorovich Design Bureau |
| Designer | Dmitry Pavlovich Grigorovich |
| First flight | January 1924 |
| Status | Prototype |
| Number built | 1 |
| Variants | Grigorovich I-2 |
Development
Initially, design was started on a single-seat fighter by Dmitry Pavlovich Grigorovich, to compete with the Polikarpov I-1 biplane. The finished aircraft, finalised in 1924 and produced at Factory No. 1, at Khodinka, near Moscow, was a single-seat, single-bay biplane of wooden construction, with the forward portion of the fuselage being covered in plywood and the rear having fabric skinning. In development, a major problem was that of engine cooling - various methods were tested including radiators attached to the undercarriage legs, but in the end a radiator suspended beneath the engine was used.
Operational history
After an initial flight in January 1924, testing took place in the spring of that year. The I-1 was found to have adequate speed for its purpose but its construction and therefore its flight were unstable, and its climb rate was found to be insufficient with repeated stalls. Therefore, the prototype was abandoned, and Grigorovich refined the design into the Grigorovich I-2 which later entered service in the Soviet Air Force.
Variants
- Grigorovich I-2
- Aerodynamically more refined version of the I-1, entered service in 1926.
Specifications (I-1)
Data from The Complete Book of Fighters[1]
General characteristics
- Crew: one
- Length: 7.32 m (24 ft 0 in)
- Wingspan: 10.8 m (35 ft 5 in)
- Wing area: 26.8 m2 (288 sq ft)
- Airfoil: Göttingen 436[2]
- Powerplant: 1 × Liberty L-12 V-12 water-cooled piston engine, 300 kW (400 hp)
- Propellers: 2-bladed wooden fixed-pitch propeller
Performance
- Maximum speed: 230 km/h (140 mph, 120 kn)
- Range: 600 km (370 mi, 320 nmi)
- Service ceiling: 6,000 m (20,000 ft)
Armament
- Guns: 2 x 7.7mm Vickers machine-guns
See also
Related development
Aircraft of comparable role, configuration, and era
References
- Green, William; Gordon Swanborough. The Complete Book of Fighters. Godalming, UK: Salamander Books. pp. 256–257.
- Lednicer, David. "The Incomplete Guide to Airfoil Usage". m-selig.ae.illinois.edu. Retrieved 16 April 2019.
На других языках
[de] Grigorowitsch I-1
Die Grigorowitsch I-1 (russisch Григорович И-1) war ein sowjetisches Jagdflugzeug. Es wurde ab 1921 von Dmitri Pawlowitsch Grigorowitsch zeitgleich zur Polikarpow I-1 entwickelt. Beide Maschinen hatten dieselbe Ausschreibung als Grundlage.- [en] Grigorovich I-1
[ru] Григорович И-1
И-1 «истребитель первый» («истребитель Либерти 400 лошадиных сил» ИЛ-400) - первый в СССР истребитель собственной конструкции, созданный российским и советским авиационным конструктором Дмитрием Павловичем Григоровичем под двигатель «Либерти» мощностью в 400 л. с. по заказу Военно-воздушных сил РККА. Прототип И-1 на летных испытаниях не достиг требуемых тактико-технических характеристик и подвергся глубокой модификации. Григорович создал новый самолет, которому был присвоен индекс «истребитель второй» И-2. После глубокой модификации новый самолет истребитель-моноплан Григоровича «истребитель второй бис» И-2 бис принят на вооружение ВВС РККА и запущен в серийное производство. Всего в серии выпущено 211 боевых машин различных модификаций.Другой контент может иметь иную лицензию. Перед использованием материалов сайта WikiSort.org внимательно изучите правила лицензирования конкретных элементов наполнения сайта.
WikiSort.org - проект по пересортировке и дополнению контента Википедии