An-140 Turboprop regional airliner

An-140 Turboprop regional airliner. First flight: 1997 © Konstantinos Panitsidis
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Production: since 1999 (total 35 units produced)
Accidents and incidents: 5
Production discontinued: 2016

The An-140 is a twin-engine turboprop regional airliner developed to replace the aging aircraft An-24/26 and Yak-40 which have been in service for many decades. It can carry 52 passengers or 6 tons of cargo at a speed of 533 km/h over a distance of 2650 km. The aircraft is equipped with two TV3-117VMA-SB2M turboprop engines. The first prototype first flew on September 17, 1997. In 1999 the aircraft was produced in small numbers by the Ukrainian aircraft factory in Kharkiv (Kharkov State Aircraft Manufacturing Company “KSAMC”). A total of 35 aircraft were delivered. The production of the aircraft was discontinued in 2016.

In addition to Ukraine, the aircraft was exported to Russia, Azerbaijan and Iran. In 1994-95 Iran acquired the rights to jointly produce the An-140 aircraft (the IrAn-140 is manufactured under license based on the An-140). As of 2023, the remaining aircraft are operated until their resources are service depleted.

 

An-140: Επιφάνειες ελέγχου σκάφους © Konstantinos Panitsidis

Spoiler. Aileron. Servo tab. Flap. Trim tab. Rudder. Elevator. ΣGeared trimer tab (external). ΣGeared trimmers tab elevator (external). ΣGeared trim tab ruddere.

 

It is a twin-engine turboprop high-wing aircraft, with the engines installed in pods that extend forward slightly down from the wings. The fuselage is a conventional all-metal simi-monocoque, with a circular cross-section. Its length is 22.605 m while the length of the cabin is 14.51 m with a total luggage space of 9.1 m3 capacity (the luggage space under the passenger cabin 3 m3 and the rear luggage space 6.1 m3). The An-140 is powered by two TV3-117MA-SB2M turboprops engines power 5000 h.p. on take-off, driven by 6-bladed Aerosila SV-140, constant-speed fully feathering reversible propellers (curved sword-shaped). The propeller diameter is 3720 mm, the weight 196 kg and their maximum rotation at 1200 rpm/min.
For autonomous starting of the power plant is carried out by an auxiliary power unit type AI9-3B or TA-14 which is located in the tail of the aircraft.

 

The engine is made according to a two-shaft scheme and consists of a gas turbine drive and a propeller drive transmission. The AV-140 propeller with blades made of polymer composite materials was designed for the An-140 regional passenger aircraft. The propeller is certified © Konstantinos Panitsidis

The engine is made according to a two-shaft scheme and consists of a gas turbine drive and a propeller drive transmission. The AV-140 propeller with blades made of polymer composite materials was designed for the An-140 regional passenger aircraft. The propeller is certified. 

 

Type TV3-117VMA-SBM1 (installed on early models) TV3-117VMA-SBM2
Units (Parameters) H=0, Mn=0, MCA +15o H=0, V=0, MCA
Power, h.p.:     
- emergency power 2.800 2.400
- take-off power rating (maximum) 2.500 2.150
- cruise power 1.750 (H=6 km, V=612 km/h) 1.550 (H=6 km, V= 600 km/h)
Specific fuel consumption, gr/h.p.*h:    
- take-off power rating 0,199 0,228
- cruise power 0,188 0,203
Pressure ratio:    
- take-off power rating 10 > 9,40
Temperature of the gas at the turbine intake, take-off power rating, K 1.293 > 1.263
Specified service life, h:    
- specified service life  7.500 > 6.000 (with increased lifetime of cold engine part up to 18.000 hours and turbine parts up to 9.000 h).
- overhaul operation time - 3.000
Dimensions, mm:    
- lenght 2.860 3.050
- height 1.210 1.218
- width 880 1.024
Engine weight, kg:    
- dry weight 595 610
- weight maximum  (including generator and air-to-air heat exchanger). not more than 795 852,5

 


 Interior layout 


An-140: Placement of household equipment © Konstantinos Panitsidis
Placement of household equipment

Grip. Head restraint. Passenger seats. Hand luggage storage lockers. Hand luggage storage lockers. Crew wardrobe. Inspector's chair (pilot). Buffet. Flight attendant seat. Rear baggage and cargo compartment. Viewfinder. Entranve door. WC.

 

An-140: Passenger version for 52 passengers © Konstantinos Panitsidis

Passenger version for 52 passengers.

Crew compartment. Passenger compartment (cabin). Vestibule. Rear baggage compartment.

 

Passenger-cargo version for 36 passengers and 1.650 kg of cargo © Konstantinos Panitsidis

Passenger-cargo version for 36 passengers and 1.650 kg of cargo.

Crew compartment. Passenger compartment (cabin). Vestibule. Rear baggage compartment.

 

Passenger-cargo version for 28 passengers and 2.650 kg of cargo © Konstantinos Panitsidis

Passenger-cargo version for 28 passengers and 2.650 kg of cargo.

Crew compartment. Passenger compartment (cabin). Vestibule. Rear baggage compartment.

 

Passenger-cargo version for  20 passengers and 3.650 kg of cargo © Konstantinos Panitsidis

Passenger-cargo version for  20 passengers and 3.650 kg of cargo.

Crew compartment. Passenger compartment (cabin). Vestibule. Rear baggage compartment.

 

Fuel for the aircraft is placed in wing tanks-caissons (one each in the left and right half-wings, specific gravity of fuel γ=0,775 kg/cm3.  
Landing gear – Tricycle double wheel retractable landing gear. 
The aircraft is equipped with modern avionics, which ensures flights according to the rules: Instrument flight, day and night.

 


Three-view drawing

An-140 © Konstantinos Panitsidis



 


Technical specifications

DESIGNER Antonov Company
COUNTRY Ukraine
TYPE Regional airliner
CREW 3
POWER-PLANT Two TV3-117VMA-SBM1 turboprop engines
Power h.p. 2x2.500
DIMENSIONS
 
Length, m
22,61
Height (empty aircraft), m 8,232
Wing span, m
24,505
Wing area m2 51,00
Cabin compartment dimensions, m:  
- length
14,51
- width
2,6
- height
1,9
WEIGHT  
Maximum take-off, kg 21.500
Normal take-off, kg
-
Empty aircraft, kg
13.100
Internal fuel, kg
4.522
Payload, kg  
- passengers, soldiers until 52
- paratroopers  42
- stretcher 24
- freight in cabin 6.000
PERFORMANCE  
Maximum speed, km/h -
Cruising speed, km/h 533
Service ceiling, m 7.600
Ferry range, km 3.680
Range, km  
- with a payload of 1,300 kg 1.300
- with 52 passengers 2.300
ARMAMENT Doesn't have (defensive).





Photos An-140 Turboprop regional airliner