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Chengdu J-20 vs. MiG-21

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J-20

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MiG-21

Role
All-weather stealthFighter
Generation
5th generation2nd generation
National Origin
ChinaSoviet Union
Manufacturer
ChengduMikoyan-Gurevich
Price (USD)
$120 Million$3 Million
Primary Users
People's Liberation Army Air ForceSoviet Air Forces
First Flight
20111955
Last Production Year
In Production1985
# Units Built
>15011,496
Status
In ServiceIn Service
Seats
1 (J-20A) / 2 (J-20S)1
Length
21 m69 ft
14 m46 ft
Wingspan
13 m42 ft
7 m23 ft
Wing Area
73 m²785 ft²
23 m²247 ft²
Height
4 m15 ft
4 m13 ft
Empty Weight
17,001 kg37,480 lbs
5,339 kg11,770 lbs
Gross Weight
25,002 kg55,120 lbs
8,811 kg19,425 lbs
MTOW
37,000 kg81,570 lbs
9,800 kg21,605 lbs
Fuel Capacity
11,793 kg26,000 lbs
2,363 kg5,210 lbs
Number of Engines
21
Engine Type
TurbofanTurbojet
Engine Manufacturer
ShenyangTumansky
Engine Model
WS-10CR-25
Dry Thrust
145 kN32,600 lbs
40 kN9,030 lbs
Thrust w/ Afterburner
142 kN32,000 lbf
70 kN15,640 lbf
Max Thrust
284 kN64,000 lbf
70 kN15,640 lbf
Max Speed (Mach)
Mach 2.00Mach 2.05
Top Speed
2,136 km/h1,327 mph
2,174 km/h1,351 mph
Range
2,037 km1,100 nm
667 km360 nm
Rate of Climb
304 m/s59,800 ft/min
235 m/s46,250 ft/min
Ceiling
20,117 m66,000 ft
17,496 m57,400 ft
G Limit
9 g8 g

What Are the Differences Between the Chengdu J-20 and MiG-21

Chengdu J-20 vs MiG-21 Size Comparison

  • At 21.20 meters, the Chengdu J-20 is 7.10 meters longer than the MiG-21.
  • With a wingspan of 13 meters, the Chengdu J-20 is 5.80 meters wider from wingtip to wingtip.
  • The wing area of the Chengdu J-20 is 0.60 meters bigger than that of the MiG-21’s 4.10 meters.

Chengdu J-20 vs MiG-21 Price

  • The Chengdu J-20 is more expensive than the MiG-21, with a unit cost of approximately 120 million compared to the MiG-21’s unit cost of approximately 3 million.

Chengdu J-20 vs MiG-21 Speed

  • The MiG-21 has a top speed of 1,351 miles per hour, and the Chengdu J-20 has a top speed of 1,327 miles per hour. Head to head, this makes the MiG-21 24 miles per hour faster than the Chengdu J-20.

About the Chengdu J-20

The Chengdu J-20 "Mighty Dragon" is China's first fifth-generation, stealth, multi-role fighter aircraft, developed for the People's Liberation Army Air Force (PLAAF). Introduced into service in 2017, the J-20 represents a significant leap forward in Chinese military aviation, designed to secure air superiority and support the strategic objectives of China's defense policy. It combines advanced stealth capabilities, long-range strike potential, and high maneuverability to counter enemy fighters and missile systems effectively.

Production History: The J-20's development started in the early 2000s, with the goal of producing an aircraft capable of matching or surpassing the capabilities of contemporary American fifth-generation fighters such as the F-22 Raptor and F-35 Lightning II. The first flight occurred in 2011, and after a series of extensive tests and evaluations, the J-20 was officially declared combat-ready and entered PLAAF service in 2017.

Design Features: The J-20 features a sleek, aerodynamic design with low radar cross-section characteristics, including internal weapon bays to minimize its visibility to radar. It is equipped with two high-thrust turbofan engines, contributing to its supercruise capability and high-speed performance. The J-20's large frame allows for considerable fuel and payload capacity, extending its range and versatility in operations.

Operational History: While specific details of the J-20's operational history remain closely guarded, it is known to have participated in various military exercises and training operations since its introduction. The J-20 is intended to perform a range of missions, from air superiority and suppression of enemy air defenses (SEAD) to precision strikes and reconnaissance, demonstrating its strategic importance to the PLAAF.

Comparison with Similar Models:

J-20 "Mighty Dragon" vs. F-22 Raptor

Stealth and Performance: The F-22 Raptor is renowned for its stealth capabilities and unmatched air superiority performance. The J-20 aims to rival this with its own stealth design and advanced aerodynamics, though the F-22 maintains an edge in stealth technology and supermaneuverability due to its thrust vectoring capabilities.

Avionics and Systems Integration: Both aircraft feature state-of-the-art avionics suites, but the F-22's mature systems and operational experience provide it with proven capabilities in combat environments.

J-20 "Mighty Dragon" vs. F-35 Lightning II

Multi-Role Flexibility: The F-35 Lightning II is designed as a multi-role stealth fighter, excelling in ground attack, reconnaissance, and air defense missions with its advanced sensor fusion and stealth characteristics. The J-20, while primarily focused on air superiority, also incorporates multi-role capabilities.

Technological Innovation and Exportability: The F-35 has seen widespread export to allies of the United States, enhancing global interoperability. The J-20, being a critical asset for China's national defense, has not been offered for export.

About the MiG-21

The Mikoyan-Gurevich MiG-21, known by its NATO reporting name "Fishbed," is one of the most produced jet fighters in aviation history, with over 11,000 units built by the Soviet Union from 1959 into the 1980s. This aircraft served as the backbone of the Soviet Air Force and its allies throughout the Cold War, making it one of the most widely exported fighters ever, used by over 60 countries across four continents.

Production History: The development of the MiG-21 began in the early 1950s, with the first prototype taking flight in 1956. It was introduced into service in 1959, marking a significant leap in Soviet fighter technology with its Mach 2 capabilities. The MiG-21 was continuously improved and produced in various versions, including interceptor, fighter-bomber, and reconnaissance variants.

Design Features: The MiG-21's design is characterized by its delta wing and unique fuselage, which houses a single Tumansky turbojet engine. This configuration provided the aircraft with excellent speed and agility. The aircraft's relatively small size and simple design also contributed to its low production and maintenance costs. Despite its compact frame, the MiG-21 was capable of carrying a range of weapons systems, including air-to-air missiles, bombs, and an internal autocannon.

Operational History: The MiG-21 saw extensive combat use in several conflicts during the latter half of the 20th century, including the Vietnam War, where it engaged in dogfights with American F-4 Phantoms and F-105 Thunderchiefs. The aircraft continued to see action in various regional conflicts around the world, proving its effectiveness in both air-to-air and air-to-ground roles.

Comparison with Similar Models

MiG-21 vs. F-4 Phantom II

Role and Capabilities: While both aircraft were primary fighters of their respective air forces during the Vietnam War, the MiG-21 was lighter, faster, and more agile, designed for quick intercept missions. In contrast, the F-4 Phantom II was a larger, more versatile fighter-bomber capable of performing a wide range of missions.

Performance: The MiG-21's design focused on high-speed interception and agility, making it especially effective in close-range dogfights. The F-4, however, had a greater payload, longer range, and was equipped with advanced radar and missile systems, allowing it to engage enemies beyond visual range effectively.

MiG-21 vs. F-5 Freedom Fighter/Tiger II

Design Evolution: Both aircraft were developed around the same time and shared roles as lightweight, cost-effective fighters for their respective allies. The F-5 was designed with a focus on ease of maintenance and versatility, while the MiG-21 was optimized for speed and altitude performance.

Operational Capabilities: The MiG-21 and F-5 were considered well-matched adversaries, with similar sizes and speeds. However, the MiG-21's delta wing provided it with a slight edge in maneuverability at higher speeds, whereas the F-5 offered better visibility and weapon accuracy at lower speeds.

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Values shown may not be 100% accurate, as some metrics are averages or only represent certain production years and configurations. Engine specs are based on the best options available.

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