Debut: June 2015

 




   

.: Tony McGoldrick's Bell H-13H Helicopter

Brand:

Revell

Scale:

1/32

Modelling Time:

10 hrs

PE/Resin Detail:

none

Comments:

"lots of fun"

Bell H-13 Sioux

From Wikipedia, the free encyclopedia
This article is about the military versions of the Bell 47 models. For the civil versions, see Bell 47.
H-13 Sioux
Bell 47-OH-13 inflight bw.jpg
An OH-13 in flight
Role Light observation helicopter
National origin United States
Manufacturer Bell Aircraft / Bell Helicopter
First flight 8 December 1945 (Bell 47 prototype)[1]
Status Retired
Primary users United States Army
United States Air Force
United States Navy
British Army
Number built At least 2,407
Developed from Bell 47
Variants H-13J Sioux
Bell 207 Sioux Scout
XH-13F

The Bell H-13 Sioux was a two-bladed, single engine, light helicopter built by Bell HelicopterWestland Aircraft manufactured the Sioux under license for the British military as the Sioux AH.1 and HT.2.

Development

In 1947, the United States Army Air Forces (later the United States Air Force) ordered the improved Bell Model 47A. Most were designated YR-13 and three winterized versions were designated YR-13A. The United States Army first ordered Bell 47s in 1948 under the designation H-13. These would later receive the name Sioux.[2]

[icon] This section requires expansionwith: Fill in some details on early development. (March 2009)

Initially, the United States Navy procured several Bell 47s, designated HTL-1, between 1947 and 1958. The United States Coast Guardevaluated this model, and procured two HTL-1s for multi-mission support in the New York Harbor. The most common U.S. Navy version of the 47 was designated the HTL-4, and dispenses with the fabric covering on the tail boom. The U.S. Coast Guard procured three HTL-5s in 1952 (similar to the HTL-4 but powered by a Franklin O-335-5 engine) and used these until 1960.[3] The Coast Guard procured two of Bell's Model 47G and designated them HUL-1G in 1959.[3]

The H-13 was used as observation helicopter early in the Vietnam War, before being replaced by the OH-6 Cayuse.

The Bell 47 was ordered by the British Army as the Sioux to meet specification H.240, with licensed production by Westland Helicopters. In order to comply with the terms of its licence agreement with Sikorsky Aircraft, which prevented it building a U.S. competitors aircraft, Westland licenced the Model 47 from Agusta, who had purchased a license from Bell.[4] the first contract was for 200 helicopters. The first 50 helicopters of the contract were built by Agusta at Gallarate in Italy followed by 150 built by Westland at Yeovil. The first Westland Sioux made its maiden flight on 9 March 1965.[5]

Design

Evacuation of wounded soldier in a H-13, Korea, 1951

The Sioux is a three-seat observation and basic training helicopter. In 1953 the Bell 47G design was introduced. It can be recognized by the full bubblecanopy, exposed welded-tube tail boom, saddle fuel tanks and skid landing gear. In its UH-13J version, based on the Bell 47J, it had a metal-clad tail boom and fuselage and an enclosed cockpit and cabin.

The H-13 and its military variants were often equipped with medical evacuation panniers, one to each skid, with an acrylic glass shield to protect the patient from wind.

A single 260 hp Lycoming VO-435 piston engine was fitted to the 47G variant. Fuel was fed from two high-mounted external tanks. A single two-bladed rotor with short inertial stabilising minor blades was used on the Sioux.[5]

Please go to Wikipedia, if you want any further information

Thanks Wikipedia!

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