H-21

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H-21

Posted by admin in Helicopters on March 4, 2016

• Transport helicopter • USAF’s first twin rotor • Vietnam action

Подпись: A Frank Piasccki's H-21/HRP made use of tho designer s well-known tandem rotor layout, perpetuated in the later Vcriol H-25JHUP. H-46 агні H-47 designs. H-21 Developed for tho USAF from tho HRP tandem-rotor designs, the H-21 made Its mark with tho US Army, which named its the Shawnee. After missing the Korean War by just a year, the twin-rotor H-21 Workhorse (its USAF name) entered service with Army aviation units In the 1950s and went to war briefly In Vietnam in the 1960s, the swansong of its career. A few oxamples served with foreign forces, mainly under the Military Assistance Program.

▼ Shawnee in Vietnam

Подпись: H-21 Operated by tho Bth and 57th Transportation Companies, and armed with Browning machino-guns. tho CH-21C served (or just two years.

A Gallic ‘flying banana*

Delivered in 1957. French army H-21Cs saw service during the conflict in Algeria.

Border-to-border flight ►

An Army H-21 Shawnee became tho first helicopter to fly non-stop from tho US west coast to the cast coast On the way it was refuelled by a de Havilland Canada U- 1A Otter via a rudimentary hose system.

H-21

FACTS AND FIGURES

>• A fow examples of tho civil Plaseckl PD-22 (Vcrtol 44) servod with Now York Alrlinos and other carriors.

► Two H-21 Cs were re-engined with turboshaft», as XH-21Dn.

► Forolgn H-21 operators Included West Germany, Franco and Canada.

► Four US aviators klllod in nn H-21 In Jufy 1962 are recognised by some sources «» tho first American fatalities In Vietnam.

► The YH-21 prototypo for this series made

Its mnidon flight on 11 April 1952.

>• A total of 334 of those helicopters was produced for tho Unltod States Army.

$Подпись: development of the fabric covered HKIM. Piaseeki s hrst successful tandem tutor design Over 100 H-21s were і ні ill for the Army, mostly of the H-21C variant. One of these made the first non-stop helicopter flight Irotn one coast of the US to the Other, refuelled aloft by a de I l.ivilkind I IA OUcr 11-2 Is arrived in VieUtam in December 1961, during the early iby* ol the l s build up H-21.% were exported under MAP, and a civil version the .Model И. ч.і\ limited scivitv with the Swedish IUIVA$ Подпись: H-21 Подпись: Type: troopfeargo tandem rotor transport hsKooter Подпись: Weights: ompty 4060 kg (8,960 to ), maximum take-off 6895 xg (15.200 <X> > H-21 Подпись: illis il 'il H-21