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Shaanxi Y-8 (Yunshuji-8)


Medium-Lift Transport Aircraft


China | 1981



"First flying in 1974, the PLA Air Force still makes use of the An-12-based Shaanxi Y-8 turboprop-powered transport."



Authored By: Staff Writer | Last Edited: 07/06/2020 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site; No A.I. was used in the generation of this content.
Because of the one-time close relationship between the Soviet Union and communist China, the latter received all manner of access to Soviet technology in the war of aircraft, armor, warships, and small arms. First-flown in December 1957, the Antonov An-12 (NATO codename of "Cub") quickly proved itself a steady performer and production of the type ultimately yielded 1,248 total examples of which some were operated locally by the Soviets and a plethora sent overseas to customers ranging from Angola and Armenia to Ukraine and the former Yugoslavia. As with other foreign-born military products, Chinese industry recreated the An-12 as a local solution in the "Y-8" by Shaanxi Aircraft Corporation.

The Y-8 is in active service with the Chinese People's Liberation Army Air Force (PLAAF) and had its own first-flight on December 25th, 1974. Developed from the An-12, it retains all of the form-and-function of the original while being more Chinese-centric to suit local requirements. At least 170 of the Chinese form have been produced.

The Y-8 was born from the Sino-Soviet Split of 1956-1966 during which Chinese-Soviet relations worsened. However, the Chinese already had gained access to the An-12 and an assembly license which laid the groundwork for a local solution to be had. The Y-8 was given a revised glazed-over nose assembly and, internally, a roller-based cargo system was installed to facilitate movement of pallets into and out of the cargo bay of the aircraft. The ramp was retained under the raised tail for ease-of-access though early versions featured an inward opening arrangement as opposed to the more common rearward-opening (showcased in later production forms).

The operating crew could number as little as two or as many as five depending on production model. The hold could further seat 90 combat-ready troops or up to 44,100lb of cargo.

Dimensions of the aircraft included a length of 111.6 feet, a wingspan of 124.7 feet, and a height of 36.6 feet. Empty weight was 78,245lb while Maximum Take-Off Weight (MTOW) could reach as high as 134,500lb.

As a reverse-engineered form of the Antonov An-12, the Y-8 copied its general arrangement which included a rounded, streamlined fuselage, shoulder-mounted wing mainplanes, and single-finned tail unit. The flight deck was positioned over and aft of the nose section offering generally good views. The mainplanes were seated high to help clear the spinning propeller blades of the four-engined lay out. The undercarriage remained a tricycle arrangement that was wholly retractable with a twin-wheeled nose leg under the cockpit floor and twin-bogied (four-wheeled) main legs under center mass.

Power was pulled from 4 x Zhuzhou WoJiang-6 (WJ-6) turboprop engines, each developing 4,250 horsepower and driving four-bladed constant-speed propellers. Lacking the know-how to design and develop their own engines, the WJ-6 was simply the Chinese version of the ubiquitous Soviet Ivchenko AI-20 turboprop of the 1950s.

With these engines coupled to the base Y-8 airframe, the aircraft could reach speeds of 410 miles-per-hour, cruise near 340 mph, and range out to 3,500 miles. Its service ceiling was up to 34,100 feet while rate-of-climb reached 2,000 feet-per-minute.

In its prototype form, the Y-8 was evaluated from mid-1972 until its first-flight in December 1974 and tested into 1975. However, quantitative serial production was not reached until 1981 despite official certification being granted to the type. In the mid-1980s, in an attempt by Lockheed to interest the Chinese military in its C-130 "Hercules" four-engined tactical transport, the company inadvertently proved the Y-8 a capable mount all its own through various measures. During the early 2000s, the line of Chinese Y-8 aircraft was modernized with the help of Ukraine-based Antonov - the original producer of the Soviet-era An-12.

In Chinese service with both its Air Force and Navy branches, the Y-8 is used in a myriad of roles covering military and peacetime initiatives. It is used to ferry troops and supplies as well as vehicles while also supporting humanitarian efforts as needed. It has become a proven, versatile platform that rivals Eastern and Western developments while being evolved further to undertake more dedicated over-battlefield roles.

The first production models were designated simply as "Y-8" but featured unpressurized holds which limited their usefulness. The Y-8A was developed as a helicopter transport while Y-8AF was used to cover Anti-Submarine Warfare (ASW) testing. Y-8B was another unpressurized model used to ferry passengers and goods and Y-8C was improved with a pressurized hold retaining the rear-loading ramp of the B-model.

The Y-8C formed the basis for the Y-8CA modified for the Electronic CounterMeasures (ECM) role. The Y-8D was an export model with "Western-style" avionics fit. The Y-8DZ was used in the electronic SIGnals INTelligence (SIGINT) role and easily identified by its canister-type array just ahead of the tail fin. The Y-8E was modified for the drone-carrying role.

Beyond these early marks, and many other later marks of the series detailed in the Variants Section below, the most notable of the line are the continually evolved variants that include the "KJ-200" and "KJ-500". The former is used in the Airborne Early Warning & Control (AEW&C) role, carrying an Active, Electronically-Scanned Array (AESA) system over its fuselage, while the latter is similar in its battlefield function but sports up to three AESA radar systems and additional antennae.

The line is currently (2020) in use with the military forces of Kazakhstan, Myanmar, Pakistan, Sri Lanka, Sudan, Tanzania, and Venezuela.

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Power & Performance
Those special qualities that separate one aircraft design from another. Performance specifications presented assume optimal operating conditions for the Shaanxi Y-8 (Yunshuji-8) Medium-Lift Transport Aircraft.
4 x Zhuzhou WpJiang-6 (WJ-6) (Ivchenko Ai-20 series) turboprop engines developing 4,250 horsepower each driving four-bladed propeller units.
Propulsion
410 mph
660 kph | 356 kts
Max Speed
34,121 ft
10,400 m | 6 miles
Service Ceiling
3,480 miles
5,600 km | 3,024 nm
Operational Range
2,000 ft/min
610 m/min
Rate-of-Climb
City-to-City Ranges
Operational range when compared to distances between major cities (in KM).
NYC
 
  LON
LON
 
  PAR
PAR
 
  BER
BER
 
  MOS
MOS
 
  TOK
TOK
 
  SYD
SYD
 
  LAX
LAX
 
  NYC
Structure
The nose-to-tail, wingtip-to-wingtip physical qualities of the Shaanxi Y-8 (Yunshuji-8) Medium-Lift Transport Aircraft.
5
(MANNED)
Crew
111.5 ft
34.00 m
O/A Length
124.7 ft
(38.00 m)
O/A Width
36.1 ft
(11.00 m)
O/A Height
78,264 lb
(35,500 kg)
Empty Weight
134,482 lb
(61,000 kg)
MTOW
Design Balance
The three qualities reflected below are altitude, speed, and range. The more full the box, the more balanced the design.
RANGE
ALT
SPEED
Variants
Notable series variants as part of the Shaanxi Y-8 (Yunshuji-8) family line.
Y-8 - Base Series Designation.
Yunshuji-8 - Alternative Designation.
Y-8A - Helicopter transport model.
Y-8AF - Developmental Anti-Submarine Warfare (ASW) variant.
Y-8B - Cargo-Passenger hauler; unpressurized.
Y-8C - Transport variant; pressurized.
Y-8CA - Electronic CounterMeasures (ECM) variant.
Y-8CB - Electronic CounterMeasures (ECM) variant; sharper nosecone.
Y-8D - Military transport export model with Western avionics fit.
Y-8DZ - Electronic SIGnals INTelligence (SIGINT) variant.
Y-8E - Drone carrier.
Y-8F - Livestock transport variant.
Y-8FQ - Maritime patrol form with boom-mounted Magnetic Anomaly Detector (MAD).
Y-8F-100 - Modernzed variant with uprated engines and cockpit systems.
Y-8F-200 - Lengthened fuselage by 7.9 feet.
Y-8F-300 - Civilian marketplace passenger hauler with Western avionics fit; unpressurized.
Y-8F-400 - Based in the F-300 with pressurization.
Y-8F-600 - Civilian marketplace passenger hauler; Pratt & Whitney turboprop engines; digital cockpit design; increased hauling to 25 tons.
Y-8GX1 - Electronic Warfare (EW) variant.
Y-8GX3 - Airborne Command Post (ACP) variant from Y-8F-200 series.
Y-8GX4 - ELectronic INTelligence (ELINT) variant.
Y-8GX7 - PSYOPS (PSYchological OPerationS) variant.
Y-8G - Proposed aerial tanker.
Y-8H - Aerial surveyor aircraft.
Y-8J - Airborne Early-Warning & Control (AWACS) variant with British search radar housed in oversized nose radome.
Y-8J - AEW variant.
Y-8JB - ELINT model form.
Y-8K - Passenger airliner seating 121 persons.
Y-8Q - Anti-Submarine Warfare (ASW) variant.
Y-8T - ACP / Battlefield Surveillance platform variant.
Y-8U - Development aerial tanker model.
Y-8W - AWACS platform.
Y-8X - Maritime Patrol Aircraft (MPA) variant.
Y-8EW - Electronic Warfare (EW) variant.
KJ-200 - Dedicated AWACS variant.
KJ-500 - Enhanced AWACS variant.
ZDK-03 - Pakistan Air Force export AWACS model.
ZDK-06 - Export AWACS variant featuring AESA and Pulse Doppler radar systems.
Operators
Global customers who have evaluated and/or operated the Shaanxi Y-8 (Yunshuji-8). Nations are displayed by flag, each linked to their respective national aircraft listing.

Total Production: 170 Units

Contractor(s): Shaanxi Aircraft Company - China
National flag of China National flag of Myanmar National flag of Pakistan National flag of Sri Lanka National flag of Sudan National flag of Tanzania National flag of Venezuela

[ China; Myanmar; Pakistan; Sri Lanka; Sudan; Tanzania; Venezuela ]
Relative Max Speed
Hi: 500mph
Lo: 250mph
Aircraft Max Listed Speed (410mph).

Graph Average of 375 MPH.
Era Crossover
Pie graph section
Pie graph section
Showcasing Aircraft Era Crossover (if any)
Max Alt Visualization
Small airplane graphic
Production Comparison
170
36183
44000
Entry compared against Ilyushin IL-2 (military) and Cessna 172 (civilian) total production.
MACH Regime (Sonic)
Sub
Trans
Super
Hyper
HiHyper
ReEntry
RANGES (MPH) Subsonic: <614mph | Transonic: 614-921 | Supersonic: 921-3836 | Hypersonic: 3836-7673 | Hi-Hypersonic: 7673-19180 | Reentry: >19030
Aviation Timeline
EarlyYrs
WWI
Interwar
WWII
ColdWar
Postwar
Modern
Future
1 / 4
Image of the Shaanxi Y-8 (Yunshuji-8)
Image from the Chinese Ministry of Defense.
2 / 4
Image of the Shaanxi Y-8 (Yunshuji-8)
Image from the Chinese Ministry of Defense.
3 / 4
Image of the Shaanxi Y-8 (Yunshuji-8)
Image from the Chinese Ministry of Defense.
4 / 4
Image of the Shaanxi Y-8 (Yunshuji-8)
Image from the Chinese Ministry of Defense.

Mission Roles
Some designs are single-minded in their approach while others offer a more versatile solution to airborne requirements.
GROUND ATTACK
CLOSE-AIR SUPPORT
AIRBORNE EARLY WARNING
ANTI-SUBMARINE WARFARE
ANTI-SHIP
ELECTRONIC WARFARE
MEDEVAC
SEARCH & RESCUE
TRANSPORT
COMMERCIAL AVIATION
VIP SERVICE
RECONNAISSANCE
X-PLANE
Recognition
Some designs stand the test of time while others are doomed to never advance beyond the drawing board; let history be their judge.
Going Further...
The Shaanxi Y-8 (Yunshuji-8) Medium-Lift Transport Aircraft appears in the following collections:
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