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Xi'an Y-7

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Y-7
A Y-7-100 of China General Aviation
General information
TypeAirliner / Freighter
National originChina
ManufacturerXi'an Aircraft Industrial Corporation
StatusIn service, In production
Number built103
History
First flight20 February 1984
Developed fromAntonov An-24
Antonov An-26
VariantsXi'an MA60

The Xi'an Y-7 (Chinese: 运-7; pinyin: Yùn-qī)[a] is a twin turboprop transport/passenger aircraft built in China.[1] It is based on the Soviet-designed Antonov An-24 series.[2]

Development

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China imported the Antonov An-24 from early in its production run and also negotiated licenses for production of the aircraft and its engines. In 1966, Xi'an aircraft factory started the project of local production of An-24. The first Chinese-assembled An-24T had its maiden flight on 25 December 1970.[2]

Production was launched in 1977 at the Xi'an aircraft factory but progress was slow due to the deleterious effects of the Cultural Revolution, with a pre-production aircraft displayed to the public at Nanyuan air base, near Beijing, on 17 April 1982. The WJ-5A1 turboprop engine was chosen as the Y-7's power source. The first production aircraft was not flown until February 1984, illustrating the slow progress (eighteen years from license to production).[2]

The Chinese aircraft equated to the An-24RV, having a full complement of windows and the booster jet engine. The majority of early deliveries were to the People's Liberation Army Air Force (PLAAF), mostly as transports, with a few in 52-seat airliner configuration for the Civil Aviation Administration of China (CAAC). After the initial licensed production run, the Y-7 was developed separately from the An-24 with a succession of upgrades culminating in the Xi'an MA60 (Modern Ark) series.[2]

A tactical transport derivative was copied, unlicensed, from the Antonov An-26 and emerged as the Y-7H, incorporating the cargo ramp door and military equipment of the An-26.[2]

Variants

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A Xi'an Y-7 at the Beijing Civil Aviation Museum
A Xi'an Y-7-100 at the Beijing Civil Aviation Museum
Xi'an Y-7E

Speculative designation for a 'Hot and High" version with more powerful engines.[1]

Xi'an Y-7G
A military variant of the MA60 produced for the PLAAF.[1]
Xi'an Y-7H
(Huo -cargo) A reverse-engineered An-26 with rear loading ramp for the PLAAF, entering production in 1992.[1]
Xi'an Y-7H-500
Civil variant of the Y-7H certified in 1994.
Xi'an Y-14
The original designation for the An-26 copy/Y-7H.[1]
Xi'an Y-7-100
Improved version, developed in co-operation with HAECO (Hong Kong Aircraft Engineering Company), with redesigned cockpit and cabin, as well as winglets.[1] This variation has an upgraded passenger cabin interior, with new avionics sourced from western providers. Flight crew reduced to three, it is capable of carrying 52 passengers.
Xi'an Y-7-100C1
Five-crew variant with equipment changes.
Xi'an Y-7-100C2
Five-crew variant with equipment changes.
Xi'an Y-7-100C3
Five-crew variant with equipment changes.
Xi'an Y-7-200
Fitted with new avionics; without winglets.[1]
Xi'an Y-7-200A
Powered by two Pratt & Whitney PW127C turboprop engines.[1]
Xi'an Y-7-200B
Stretched version (74cm (29in)) with WJ5A-1G engines, built for the Chinese domestic market.[1]
Xi'an HYJ-7
(Hongzhaji Yunshuji Jiaolianji - Bomber/transport/trainer) A pilot and crew trainer for H-6 heavy bombers fitted with a stabilized HM-1A bombsight, bomb-aiming radar and a TNL-7880 combined navigation system.[1]
Xi'an MA60
(Y-7-MA60) (Modern Ark 60 seats) A westernized variant of the Y-7 intended to attract more western customers and meet Joint Airworthiness Requirements.[1]
Xi'an JZY-01 / Y-7 AWACS
Carrier-based airborne early warning and control (AEW&C) variant. JZY stands for Jian (舰) Zai (载) Yu (预), meaning carrier borne AEW&C, has 4 rudders like E-2 AEW.[3] It is being used as a testbed for the Xi'an KJ-600.

Operators

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Current operators
 People's Republic of China
Former operators
 Cambodia
 Iran
 Laos
 Mauritania
 People's Republic of China
 Zimbabwe

Accidents and incidents

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22 June 2000
Wuhan Airlines Flight 343 was struck by lightning and crashed near Sitai, Yongfeng, killing all 42 on board and another seven on the ground. This crash is the worst ever accident involving the Y-7.
19 October 2006
A People's Liberation Army Air Force Y-7 crashed into a wheat field near Hengshui, killing two.

Specifications (Y-7-100)

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Data from Chinese Aircraft:China's aviation industry since 1951 [1]

General characteristics

  • Crew: 3
  • Capacity: 52 pax
  • Length: 24.218 m (79 ft 5 in)
  • Wingspan: 29.666 m (97 ft 4 in)
  • Height: 8.553 m (28 ft 1 in)
  • Wing area: 75.26 m2 (810.1 sq ft)
  • Aspect ratio: 11.69
  • Airfoil: root: TsAGI S-5-18; tip: TsAGI S-3-13[5]
  • Empty weight: 14,988 kg (33,043 lb) operating weight empty
  • Max zero-fuel weight: 19,655 kg (43,332 lb)
  • Max takeoff weight: 21,800 kg (48,061 lb)
  • Max landing weight: 21,800 kg (48,061 lb)
  • Powerplant: 2 × Dongan WJ-5A turboprop engines, 1,800 kW (2,400 shp) each equivalent
  • Propellers: 4-bladed constant-speed feathering propellers, 3.9 m (12 ft 10 in) diameter [citation needed]

Performance

  • Maximum speed: 503 km/h (313 mph, 272 kn)
  • Cruise speed: 423 km/h (263 mph, 228 kn) at 6,000 m (20,000 ft)
  • Range: 910 km (570 mi, 490 nmi) maximum payload
1,982 km (1,232 mi; 1,070 nmi) with max fuel
  • Service ceiling: 8,750 m (28,700 ft)
  • Take-off run: 640 m (2,100 ft) at MTOW
  • Landing run: 645 m (2,116 ft) at MLW

Notes

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  1. ^ Also transliterated in English-language sources as the Xian Y-7.

References

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  1. ^ a b c d e f g h i j k l Gordon, Yefim; Komissarov, Dmitry (2008). Chinese Aircraft:China's aviation industry since 1951. Manchester: Hikoki Publications. pp. 196-207. ISBN 978-1-902109-04-6.
  2. ^ a b c d e Gordon, Yefim; Komissarov, Dmitry; Komissarov, Sergey (2003). Antonov's Turboprop Twins. Hinkley: Midland. pp. 5-40. ISBN 978-1-85780-153-8.
  3. ^ "JZY-01/Y-7 AEW". chariweb.com. Archived from the original on 18 January 2013. Retrieved 3 July 2015.
  4. ^ a b c "World Air Forces 2022". Flightglobal. 2022. Retrieved 16 July 2022.
  5. ^ Lednicer, David. "The Incomplete Guide to Airfoil Usage". m-selig.ae.illinois.edu. Retrieved 16 April 2019.

Further reading

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