The L-39 was selected as the standard jet trainer in 1972 for the Soviet Union and the Warsaw Pact countries. The L-39 is a single engine, tandem two seat, all-metal, subsonic aircraft. The aircraft's primary mission was basic and advanced training, with external armament stores that would enabled it to fulfill operational training in ground attack roles. The First model designated L-39C was the initial training version with two underwing stations. A total of 2,244 L-39C models had been delivered, almost all to the soviet Air Force. Aero Vodochody L-39, L-59 are used at Afghanistan, Algeria, Bangladesh, Bulgaria, Cuba, Czechoslovakia, Egypt, Ethi, GDR, Iraq, Libya, Nigeria, Romania, Syria, Thailand, Tunis, USA (private buyers), USSR, Vietnam. Total production of 2,904 L-39/-59. The L-39 was also flown by the Russian Knights, their equivalent of the Blue Angels.

Training with L-39

How to manufacture paper L-39

 

Download the drawing and print pdf file with Acrobat Reader on thick paper. (Refer to Material and Instruments.) Set up your printer for thick paper.
Cut on solid lines.
Start with the body of the jet. Fold up as dash and dot line " _ . _ . _" , the line consealed in fold or located inside the corner as result, and fold down as dash line " - - - - " . Make cockpit 1 at first. Cut out catapulting hook. Cut out vertical fin 2. Stick 1 and 2 in the body 3.
Fold up the engine. Make main wings 4. Dihedral angle of main wings is 10 degree. Attach main wings to bottom of jet body. Paste horizontal tail plane 5. Fold nose cover 6 over nose of jet and attach with glue. Cut out the catapulting hook. No balance weight is needed.
Wait for glue or paste to dry.
 

Adjustment
Spray paint thinly if fly outdoor.
Bend down wings very slightly as a bow shape to make camber. Dihedral angle of main wings is 10 degrees. Bend up slightly rear end at outside of horizontal tail fin. If carefully adjusted, this plane may climb vertically to high altitude and fly for long endurance.