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Aviation / Aerospace

Sukhoi Checkmate (Su-75)


Lightweight 5th Generation Fighter Proposal [ 2026 ]



The export-minded Sukhoi Checkmate is an all-modern lightweight fighter offering from Russia with inherent stealth characteristics.



Authored By: Staff Writer | Last Edited: 11/15/2021 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site.

VIEW SPECIFICATIONS [+]
The Sukhoi "Chekcmate" 5th Generation lightweight stealth fighter is the latest combat aircraft offering from Russia, the entry viewed to be a low-cost, stealth-minded offering by Russia for interested export parties. The design is sponsored by Rostek State Corporation (UAC) and was teased in the days leading up to the MAKS 2021 air show outside Moscow. The aircraft appears to borrow design lines from both the American Lockheed Martin F-35 "Lightning II" strike fighter and the Russian Sukhoi Su-57 "Felon" multi-role fighter, both featuring inherent stealth characteristics as well as 5th Generation classification.

At its core, the fighter in question is of single-seat, single-engine configuration with proven external stealth characteristics including fuselage chine running from nose to tail. The cockpit is seated aft of a short nosecone, presumably shrouding an all-modern radar unit. The fuselage is deep, tapered at the nose and tail ends, and assumed to house an internal weapons bay or bays. Interestingly, the air inlet is fitted ventrally, allowing for clean air intake to the turbofan within the middle-aft of the fuselage (the Lockheed F-16 "Fighting Falcon" and Eurofighter "Typhoon" multirole types both feature this design quality). The new fighter also bears some similarities to the Boeing X-32, a prototype strike fighter which unsuccessfully competed with the X-35 for the role eventually fulfilled by the F-35 Lighting II design. The exhaust port of the engine, bookended at the rear of the fuselage by the tailfins, is circular.

The mainplanes are of relatively small-area delta shape, negating the need for traditional horizontal tailplanes. The tailplanes featured are outward-canted, believed to be all-moving, and cover the role of vertical and horizontal planes seen in more conventional fighter designs.

Estimate performance figures indicate a maximum speed beyond Mach 2.0. Gross Take-Off Weight (GTOW) is assumed to be in the 20 ton (short) region. Comparatively, the F-35 reaches speeds of Mach 1.6 at altitude and sports a gross weight of 25 tons. The F-16 Block 50/52 aircraft has a maximum speed of Mach 2.05 and a GTOW of 13.25 tons. As such, the Checkmate may feature performance and battlefield capabilities somewhere between this 5th and 4th (respectively) fighter designs.

It is accepted that the Checkmate aircraft on display at MAKS is a full-sized mockup and not a full-fledged, flyable prototype. Additionally, base on the tail number on display, the fighter may carry the official designation of "Su-75" in service.

Named prime candidates for the Checkmate appear to include Argentina and Vietnam who both field an aging feet of primary 4th Generation (or older) fighters. India always remains in the running for new Russia fighter types as well while the Checkmate may very well be used as a lightweight counterpart to the heavier Su-57 for the Russian Air Force, as the Mikoyan MiG-29 "Fulcrum" has been to the Sukhoi Su-27 "Flanker" series for decades.

NOTE: Structural dimensions and performance specifications showcased on this page are estimates on the part of the author. Data will be updated as new information allows.©MilitaryFactory.com
Note: The above text is EXCLUSIVE to the site www.MilitaryFactory.com. It is the product of many hours of research and work made possible with the help of contributors, veterans, insiders, and topic specialists. If you happen upon this text anywhere else on the internet or in print, please let us know at MilitaryFactory AT gmail DOT com so that we may take appropriate action against the offender / offending site and continue to protect this original work.

November 2021 - The Sukhoi Su-75 is being showcased at the Dubai aerospace event, United Aircraft Corporation hoping to interest the UAE in the lightweight stealth fighter design.

November 2021 - The first of several flyable Checkmate airframes have entered the assembly phase according to UAC.

Specifications



Service Year
2026

Origin
Russia national flag graphic
Russia

Status
IN-DEVELOPMENT
Program in Progress.
Crew
1

Production
0
UNITS


Sukhoi OKB / Rostek State Corporation (UAC) - Russia
(View other Aviaton-Related Manufacturers)
National flag of Argentina National flag of Russia National flag of the United Arab Emirates National flag of Vietnam Argentina (possible); Russia (possible); United Arab Emirates (possible); Vietnam (possible)
(OPERATORS list includes past, present, and future operators when applicable)
Air-to-Air Combat, Fighter
General ability to actively engage other aircraft of similar form and function, typically through guns, missiles, and/or aerial rockets.
X-Plane (Developmental, Prototype, Technology Demonstrator)
Aircraft developed for the role of prototyping, technology demonstration, or research / data collection.


RADAR-CAPABLE
Houses, or can house (through specialized variants), radar equipment for searching, tracking, and engagement of enemy elements.
COUNTERMEASURES
Survivability enhanced by way of onboard electronic or physical countermeasures enacted by the aircraft or pilot/crew.
WING SWEEPBACK
Mainplanes, or leading edges, features swept-back lines for enhanced high-speed performance and handling.
HIGH-SPEED PERFORMANCE
Can accelerate to higher speeds than average aircraft of its time.
HIGH-ALTITUDE PERFORMANCE
Can reach and operate at higher altitudes than average aircraft of its time.
PILOT / CREW EJECTION SYSTEM
Assisted process of allowing its pilot and / or crew to eject in the event of an airborne emergency.
CREWSPACE PRESSURIZATION
Supports pressurization required at higher operating altitudes for crew survival.
ENCLOSED CREWSPACE(S)
Features partially- or wholly-enclosed crew workspaces.
RETRACTABLE UNDERCARRIAGE
Features retracting / retractable undercarriage to preserve aerodynamic efficiency.


Length
49.2 ft
(15.00 m)
Width/Span
32.8 ft
(10.00 m)
Height
16.4 ft
(5.00 m)
Empty Wgt
36,156 lb
(16,400 kg)
MTOW
51,588 lb
(23,400 kg)
Wgt Diff
+15,432 lb
(+7,000 kg)
(Showcased structural values pertain to the Sukhoi Checkmate production variant)
monoplane / mid-mounted / delta
Monoplane
Design utilizes a single primary wing mainplane; this represent the most popular mainplane arrangement.
Mid-Mounted
Mainplanes are mounted along the midway point of the sides of the fuselage.
Delta
The planform takes on the general shape of a triangle in which the leading edges are swept back for high-speed efficiency while the trailing edge is straight.
(Structural descriptors pertain to the Sukhoi Checkmate production variant)
Installed: 1 x Afterburning turbofan engine of unknown make, model, and thrust output.
Max Speed
808 mph
(1,300 kph | 702 kts)
Ceiling
59,055 ft
(18,000 m | 11 mi)
Range
2,485 mi
(4,000 km | 7,408 nm)
Rate-of-Climb
70,000 ft/min
(21,336 m/min)


♦ 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


(Showcased performance specifications pertain to the Sukhoi Checkmate production variant. Performance specifications showcased above are subject to environmental factors as well as aircraft configuration. Estimates are made when Real Data not available. Compare this aircraft entry against any other in our database or View aircraft by powerplant type)
Unknown. Assumed internal automatic cannon for close-in work. Also support for precision-guided drop bombs / munitions as well as air-launched air-to-air and air-to-surface missiles of Russian origin.

Also assumed: External (perhaps optional) hardpoints for additional air-launched / air-dropped ordnance.


Supported Types


Graphical image of an aircraft automatic cannon
Graphical image of an air-to-air missile weapon
Graphical image of a short-range air-to-air missile
Graphical image of an aircraft air-to-surface missile
Graphical image of an aircraft conventional drop bomb munition
Graphical image of an aircraft guided bomb munition


(Not all ordnance types may be represented in the showcase above)
Hardpoint Mountings: 5
Mounting Points




X

-
-
-
7
5
-
1
-
4
6
-
-
-
HARDPOINT(S) KEY:
X

15
13
11
9
7
5
3
1
2
4
6
8
10
12
14


COLOR KEY:
Fuselage Centerline
Fuselage Port/Wingroot
Fuselage Starboard/Wingroot
Wing/Underwing
Wingtip Mount(s)
Internal Bay(s)
Not Used

Note: Diagram above does not take into account inline hardpoints (mounting positions seated one-behind-the-other).


"Checkmate" - Base Project Designation.


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