New L-39NG program is focused on development of a next generation of the legendary L-39 Albatros jet trainer. The L-39NG program represents deep modernization of the L-39 Albatros combining latest engine and aircraft systems technology with traditional advantages of legacy L-39s such as excellent handling qualities, easy maintenance, robust design and low operational costs.

Design Features

In 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:

“Never change a winning team” is a saying followed by many sports coaches worldwide. In the field of jet training aircraft, the L-39’s airframe has proven to be the absolute winner, leaving many designs of other manufacturers behind, both in terms of numbers delivered as well as in terms of performance, reliability and serviceability. Therefore, we at AERO have decided to maintain the aerodynamic features of the current airframe also for the L-39NG. The L-39NG’s attributes are the following: Based on the successful and proven airframe of the L-39 Albatros

successful and proven airframe of the Weight reduction

Less drag due to removal of wing tip tanks

due to removal of wing tip tanks Increased life of up to 15,000 flight hours

flight hours Improved detail parts precision (CAD modelling and CNC machining)

(CAD modelling and CNC machining) Compatible with L-39 GSE

Modular avionics core

Embedded virtual training capability

NVG compatibility

Integrated digital avionics with configurable glass cockpit for increased training effectiveness



Single-point pressure refueling

NVG compatible lightning

Increased fuel volume





The task of a training aircraft is to familiarize the pilot with the cockpit layout and functions which are as close as possible to those of the fighter aircraft following upon the trainer. However, the cockpits of today’s training fleets all over the world are in many cases still analogue with little similarity to the cockpits of 4/4+/5 generation fighter aircraft. Such training is lengthy, inefficient and gives rise to the need for a significant amount of flight hours on extremely expensive double seat fighters in operation conversion units. In order to provide the pilot with an efficient training and enable him a smooth transition to the fighter unit, the cockpit of the L-39NG will have the following features: HUD

MFDs

Electronic Stand-by Instrumentation

HOTAS Controls

NVG compatibility

Centralized cockpit management

Master moding:

o NAV (Navigation)

o A/G (Air-Ground)

o A/A (Air-Air)

Simulated and live weapon delivery

Single piece canopy – improved view out of the cockpit

Debriefing system

Health and Usage Monitoring System

To reduce operating costs, the L-39NG is designed for a two-level maintenance approach







The expiring service life, limited serviceability and availability of spare parts of the original AI-25TL engine are in direct contrast to the airframe of most L-39 aircraft, which is still capable of future service for a limited time. The selection of the Williams International FJ44-4M engine for both the re-engining of existing L-39 fleets as well as the final L-39NG aircraft is a solution that: Enables the extension of operation life of current L-39 fleets

of current L-39 fleets

Provides a modern and reliable power unit for the L-39NG (FADEC controlled)

for the L-39NG (FADEC controlled)

Increases the flight safety as the FJ44-4M engine is a product of 21 st century technology

as the FJ44-4M engine is a product of 21 century technology

Increases the aircraft performance (for example the acceleration time is 3-5 sec versus 9-12 sec of the original engine)

(for example the acceleration time is 3-5 sec versus 9-12 sec of the original engine)

Reduces maintenance demands and operation cost by saving both fuel and manpower for maintenance

by saving both fuel and manpower for maintenance

Enables a smooth transition from the current L-39 aircraft to the L-39NG via the re-engining option (see section LINK ) MAIN ENGINE CHARACTERISTICS • Max 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 MAIN 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