Bell designed its
Model 204
in response to a 1955
United States Army
requirement for a utility helicopter. The 204 was a giant step forward in helicopter design, being one of the first to be powered by a
turboshaft
. The turboshaft engine radically improved the practicality of the helicopter due to its light weight and high
power-to-weight ratio
, lower fuel consumption, and lower maintenance and operating costs. The use of a turboshaft in the 204 allowed it to carry a useful payload over respectable ranges and at reasonable speeds, which resulted in the 204 and subsequent 205 becoming the most successful western helicopter series in terms of numbers built.
[1]
The civil
204B
was first delivered in 1961. The subsequent
Model 205A-1
is equivalent to the
UH-1H
, which, compared to the 204, is longer, larger, and has better performance and a more powerful engine.
[1]
Over 60 civil Model 204B helicopters had been delivered by 1967, while further examples were built by Agusta-Bell until 1973. 12,000 Model 205s (including civil 205A-1s) were built by Bell and Agusta-Bell up to the early 1980s. Numerous ex-military 204s and 205s were converted for commercial use.
[1]
Bell Helicopter's company designation of the UH-1B.
- Bell 204B
? Civil or military utility transport helicopter, derived from the UH-1B. Powered by a
Lycoming T53-L-09A
, max weight was 8,500?lbs, max passengers, ten.
[2]
- Agusta 204B
? Civil or military utility transport helicopter. Built under licence in Italy by
Agusta
in 1963?1967.
[3]
Also known as Agusta-Bell AB 204
- Fuji-Bell 204B/204B-2
? Civil utility transport helicopter. Built under licence in Japan by
Fuji Heavy Industries
alongside military HU-1B and HU-1H for the
Japan Ground Self Defense Force
.
[4]
Bell Helicopter's company designation of the UH-1H.
- Bell 205A
? Civil or military utility transport helicopter. Powered by one T53-L-11A, max weight 8,500 pounds, max passenger, 14.
[2]
- Agusta-Bell 205
? Civil or military utility transport helicopter. Built under licence in Italy by Agusta.
[
citation needed
]
- Bell 205A-1
? Civil or military utility transport helicopter version, initial version based on the UH-1H. Powered by one T53-L-13A, max weight 9,500 pounds (10,500 for external loads), max passengers, 14.
[2]
- Fuji-Bell 205B
? a joint Bell-Fuji commercial variant based on
UH-1J
, a Japanese improved model of UH-1H.
[5]
- Bell 210
? Bell Helicopter's designation for a UH-1H, remanufactured and sold as a new aircraft. Powered by one T53-L-17B, same weight capacities as the 205B.
[2]
- Agusta-Bell 205BG
? Prototype fitted with two Gnome H 1200 turboshaft engines.
[6]
- Agusta-Bell 205TA
? Prototype fitted with two Turbomeca Astazous turboshaft engines.
[6]
- Bell 208
? In 1965, Bell experimented with a single twin-engine Model 208 "Twin Huey" prototype, which was a UH-1D fitted with
Continental XT67-T-1
twin-pack engine module, consisting of two power turbines driving a common gearbox. This exercise was performed as an experiment using company funds.
[6]
- 205A-1++
? Field-upgraded 205A utilizing a T53-L-17 engine and a 212 drivetrain. Similar to the production 205B and 210.
- Advanced 205B
? Proposed upgraded Japanese version.
[
citation needed
]
- Global Eagle
?
Pratt & Whitney Canada
name for a modified UH-1H with a new
PT6C-67D
engine, modified tail rotor, and other minor changes reported to increase range and
fuel efficiency
over the Bell 212.
[7]
- Huey 800
? Upgraded commercial version, fitted with an LHTEC T800 turboshaft engine.
[
citation needed
]
- Bell 211
? The
HueyTug
, was a commercial version of the UH-1C with an upgraded transmission, longer main rotor, larger tailboom, strengthened fuselage, stability augmentation system, and a 2,650 shp (1,976?kW)
T55
-L-7 turboshaft engine.
[8]
- Bell 212
? Bell Helicopter's company designation for the UH-1N.
[
citation needed
]
- Bell 214
Huey Plus
? Strengthened development of the Bell 205 airframe with a larger engine; optimized for "hot and high" conditions. Later developed into the larger, twin-engine
Bell 214ST
.
[
citation needed
]
- Bell 412
? Bell 212 with a four-blade semi-rigid rotor system.
[
citation needed
]
- Panha Shabaviz 2-75
? is an Iranian utility helicopter built by the Iranian Helicopter Support and Renewal Company.
[9]
It is a
reverse engineered
version of the Bell 205s which were sold to the government of
Mohammad Reza Pahlavi
. The first example was built in 1998 and the type was publicly unveiled the following year.
[9]
It has been manufactured locally in Iran since 2002 and is in active service with the Iranian military and government. It has also been claimed that it can be modified to carry light weaponry.
[
citation needed
]
Specifications (204B)
edit
Data from
The International Directory of Civil Aircraft
[1]
General characteristics
- Crew:
1 or 2
- Capacity:
8-9 passengers / 3,000?lb (1,361?kg) equivalent cargo
- Length:
41?ft 8?in (12.70?m)
- Height:
14?ft 7?in (4.45?m)
- Empty weight:
4,600?lb (2,087?kg)
- Max takeoff weight:
9,500?lb (4,309?kg)
- Powerplant:
1 ×
Lycoming T53-L-11A
turboshaft
engine, 1,100?shp (820?kW)
- Main rotor diameter:
48?ft (15?m)
- Main rotor area:
1,808?sq?ft (168.0?m
2
)
Performance
- Maximum speed:
120?kn (140?mph, 220?km/h)
- Cruise speed:
111?kn (128?mph, 206?km/h)
- Range:
300?nmi (350?mi, 560?km)
- Service ceiling:
19,390?ft (5,910?m)
- Rate of climb:
1,755?ft/min (8.92?m/s)
Related development
Related lists
- ^
a
b
c
d
Frawley, Gerard:
The International Directory of Civil Aircraft, 2003?2004
, page 44. Aerospace Publications Pty Ltd, 2003.
ISBN
1-875671-58-7
- ^
a
b
c
d
FAA Type Certificate Data Sheet H1SW for the 204, 205A, 205A-1 and 210 models
- ^
Mutza, Wayne:
UH-1 Huey In Action
, Aircraft No.75, Squadron/Signal Publications, 1986.
ISBN
0-89747-179-2
p.10
- ^
HISTORY|SUBARU BELL 412EPX|SUBARU Aerospace Company
- ^
Takeshi Makino (24 December 2002).
"The Activities of Fuji Heavy Industries Ltd. in the Field of Vertical Flight"
. Archived from
the original
on 14 April 2004
. Retrieved
17 November
2019
.
- ^
a
b
c
Greg Goebel's Vectorsite in Public Domain
Archived
April 5, 2011, at the
Wayback Machine
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"Eagle Power"
. Aviation Today. Archived from
the original
on 14 November 2007
. Retrieved
17 March
2007
.
- ^
"Skycranes"
. Centennial of Flight Commission. Archived from
the original
on 9 April 2007
. Retrieved
15 March
2007
.
- ^
a
b
Panha hovers between repair and manufacturing.
- ^
"Research aircraft (rotary and fixed wing) ? National Research Council Canada"
. Nrc-cnrc.gc.ca
. Retrieved
22 April
2014
.
- ^
"ROYAL THAI POLICE -History"
(PDF)
. Archived from
the original
(PDF)
on 23 September 2011
. Retrieved
17 January
2013
.
- ^
"Royal Thai Police Wing"
. JetPhotos.Net. Archived from
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on 22 December 2015
. Retrieved
17 January
2013
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- ^
World Air Forces ? Historical Listings Thailand (THL)
, archived from
the original
on 25 January 2012
, retrieved
30 August
2012
- ^
"National Airborne Service Corps (NASC)"
. TaiwanAirPower
. Retrieved
18 January
2013
.
- ^
"CAL FIRE Air Unit"
. Archived from
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. Retrieved
20 January
2013
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- ^
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. ffs.gov
. Retrieved
17 January
2013
.
- ^
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. Network Solutions®. Archived from
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on 9 October 2012
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22 January
2013
.
- ^
"LVMPD Air Support"
. Archived from
the original
on 15 January 2013
. Retrieved
20 January
2013
.
- ^
"NASA Security"
. 8 January 2010
. Retrieved
20 January
2013
.
- ^
of the UH-1 on Airliners.net
- ^
"OC Fire Authority"
. Copyright ⓒDPD
. Retrieved
17 January
2013
.
- ^
"SBSD Aircraft operated"
. sbcounty.gov
. Retrieved
17 January
2013
.
- ^
"San Diego Sheriff's Copter 10 Responds To Riverside County For Hoist Rescue"
. Police Helicopter Pilot.com. Archived from
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on 8 June 2015
. Retrieved
17 January
2013
.
- ^
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. Demand media
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2013
.
- ^
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17 January
2013
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- ^
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on 8 June 2015
. Retrieved
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- ^
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. Retrieved
20 January
2013
.
- ^
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. dailyrecordnews.com. 15 May 2010
. Retrieved
17 January
2013
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- Chant, Christopher,
Fighting Helicopters of the 20th Century,
Graham Beehag Books, Christchurch, Dorset, England (1996).
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ISSN
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.
The initial version of this article was based on a
public domain
article from
Greg Goebel's Vectorsite
.
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Bell 204
.
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.