• The ARK-4 was a single-engine Soviet flying boat design produced by Chyetverikov. General characteristics Crew: 5 Length: 14.6 m (47 ft 11 in) Wingspan:...
    3 KB (157 words) - 20:07, 28 January 2022
  • The Chyetverikov ARK-3 (ARKtichyeskii - arctic) was a multi-role flying boat designed for Arctic operations that was built in the Soviet Union from 1933...
    5 KB (567 words) - 20:06, 28 January 2022
  • OKB Chyetverikov (redirect from Chetverikov)
    transferred to teaching work at the LKVVIA. Chyetverikov ARK-3 Chetverikov ARK-4 Chyetverikov MDR-3 Chetverikov MR-4bis Chyetverikov MDR-6 "Mug" (Chye-2) Chyetverikov...
    5 KB (643 words) - 20:08, 22 May 2023
  • Thumbnail for Chyetverikov SPL
    General characteristics Crew: 2 Length: 7.4 m (24 ft 3.5 in) Wingspan: 9.5 m (31 ft 6 in) Wing area: 13.4 m2 (144 sq ft) Empty weight: 592 kg (1,305 lb)...
    5 KB (569 words) - 18:11, 18 November 2023
  • (autogiro) A-4 - TsAGI A-7 - Kamov ARK (AРК) - ARKtichyeskii (arctic = arctic exploration aircraft) ARK-3 - Chyetverikov ARK-4 - Chyetverikov ARK-5 - Polikarpov...
    21 KB (1,961 words) - 14:52, 10 July 2024
  • Thumbnail for History of evolutionary thought
    the work on genetic diversity by Russian geneticists such as Sergei Chetverikov. He helped to bridge the divide between the foundations of microevolution...
    142 KB (16,480 words) - 06:01, 27 September 2024