Program L-39 NGDesign FeaturesIn addition to advantages of legacy L-39 versions such as low operational cost, high reliability, easy handling and rugged design including wide track undercarriage with low pressure tyres and air inlets positioned above the wing in order to prevent foreign object damage to the engine, the L-39NG features:
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AirframeLighter, stronger and more durable
Redesigned wing with integral fuel tanks significantly improving range and endurance
Improved corrosion resistence
Four underwing and one underfuselage weapon pylons for a wide variety of gun, bomb and rocket armament and external fuel tanks
Improved aerodynamice
Redesigned aiframe with fatigue life of up to 15,000 flight hours
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Avionics UpgradeModular avionics core
Embedded virtual training capability
NVG compatibility
Integrated digital avionics with configurable glass cockpit for increased training effectiveness
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Systems UpgradeSingle-point pressure refueling
NVG compatible lightning
Increased fuel volume
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Cockpit SystemNew escape system with „zero-zero ejection seats
Single-piece canopy for improved cockpit visibility
Bird strike protection
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Operation SupportDebriefing system
Health and Usage Monitoring System
To reduce operating costs, the L-39NG is designed for a two-level maintenance approach
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PropulsionNew Williams International FJ44-4M turbofan engine with FADEC controls and electrical starting eliminating costly jet fuel starter.
Using essentially the same proven core with a continued infusion of improved technology,
this new dual-channel FADEC-equipped turbofan engine will provide significantly better value than existing engines in its target thrust class.
Williams International sets a new standard in value with the introduction of the FJ44-4 turbofan engine.
The 3600-pound class Dash Four offers more power, lower acquisition and operating cost, and same great reliability as the FJ44-4A already in use around the world.
ENGINE CHARACTERISTICSMax thrust 16.87 kN 3,790 lbst
Length 1.34 m 52.8 in
Diameter 0.67 m 26.3 in
Weight 305 kg 670 lb
FJ44-4M ENGINE BENEFITS
high thrust
short acceleration time
low specific fuel consumption
low dry weight
electrical starting system
dual FADEC control
surge resistant
low noise signature
lifetime warranty (TAP Blue)
low maintenance demands
high TBO limits
no calendar service life limitations
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PerformanceLighter, faster, more agile
Extended range and endurance
Power assisted ailerons
Nose wheel steering
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