Su-27UBK

Sukhoi Su-27UBK
The converted fighter Su-27UBK is designed for teaching airborne personnel piloting skills, aircraft navigation and operational use, as well as for destruction of airborne targets in daytime and at night, under favourable and adverse weather conditions and for ground attack using unguided ADO.

Armaments
1. Guns	Onboard 30mm gun with 150 rds
2. Guided air-to-air missiles	R-27R1(ER1) R-27T1(ET1) R-73E RVV-AYe
3. Unguided missiles	S-8KOM, S-8OM, S-8BM S-13T, S-13OF S-25OFM-PU
4. Bombs, calibre, kg	100, 250, 500
5. Cluster bombs	RBK-500SPBE-D
6. External fuel tanks	n/a
7. Suspension points	10
Limits

Aircraft performance
Takeoff weight:
- normal (including rockets 2xR-27R1 + 2xR-73E, 5270 kg fuel), kg	23,900*
- maximum, kg	33,000
Maximum landing weight, kg	21,000
Max landing weight, kg	23,000
Maximum internal fuel, kg	9,400
Maximum ordnance, kg	4,430
Service ceiling (without appendages), km	17.5
Maximum flight speed at sea level (without external ordnance and stores, km/h	1,400
Max Mach (without external ordnance and stores)	2.0
G-limit (operational)	9
Maximum flight range (with rockets 2xR-27R1, 2xR-73E launched at half distance):
- at sea level, km	1,270
- at height, km	3,000
Maximum airborne time, hours	4.5
Takeoff run at normal takeoff weight, m	550
Landing run at normal landing weight (with braking parachute), m	670
Aircraft dimensions:
- length, m	21.9
- wingspan, m	14.7
- height, m	6.4
Crew	2
Powerplant
Number and type of engines	2 x AL-31F
Thrust:
- in afterburner, kgf	12,500 -2 %
- at full power, kgf	7,670 ± 2 %
Avionics
1. Fire control system (to be upgraded for use of RVV-AYe rocket)
1.1 Search and track radar (to be upgraded for use of new ADO types)
1.2. IRST and laser rangefinder
1.2.1. Optical search and track station
1.2.2. Helmet-mounted target designator
1.3. IFF system interrogator
1.4. Wide-angle HUD
2. Fire control system (to be upgraded for use of new ADO types)
3. GPS satellite-based navigation system
4. Flight navigation system
4.1. Attitude and heading reference system
4.2. Short-range radio navigation system
4.3. Autopilot system
4.4. Radio altimeter
4.5. Air data system
4.6. Limiting signal system
5. IFF system transponder
6. Communications system
6.1. VHF/UHF-band communications transceiver
6.2. SW band radio communications transceiver
6.3. Data communication terminal equipment
7. Electronic countermeasure equipment
7.1. Radar warning receiver
7.2. Radio jamming transmitter (in pod)
7.3. Chaff and heat flare dispenser
8. Monitoring and recording system
8.1. Integrated onboard control and crew warning system
8.2. Flight information recording equipment
8.3. Onboard emergency situation warning equipment
8.4. Emergency warning system
9. Aircraft responder
10. Command guidance equipment
Limits
Aircraft limit:
- SLL, hours	2,000
- to first overhaul, hours	1,000
- service life, years	20
Engine and outboard accessory-gearbox life:
- to first overhaul, hours	300
- service life limit, hours	900

*May vary depending on the equipment configuration installed upon customer's request