Documentation
Models / Plans
Click the boxes above to select your page.
Green indicates the page you are on

LET L-13 Blanik

by
Noël Rumers
Vince Cockett

The Blanik L-13 is an all metal production two-seater, widely used in 36 countries over the world. In Russia (in those days) alone, more than 1200 were delivered. It had a measured performance that was very good for its moderate span and had a relatively roomy fuselage.

The Blanik L13 series began production in 1956. Many were produced and are still to be see around many of the flying clubs. This is mainly due to its solid metal construction, which required little care.

It was a very good performer and held many records, at its time. Untiil 1970 records flown with this outstanding design were kept on the record board. The Blanik L13 is a fully aerobatic glider with a max loading. of 400kg

Its fuselage was made in two half shells and than riveted together. The wings were attached by two vertical pins on both sides of the fuselage. The elevator is also of full metal and of hinged construction. Only one pin locks the two elevator halves under the tail cone which helps to store the plane. The moving parts like the ailerons, Fowler flaps, rudder and elevator are fabric covered. The airbrakes are on top and bottom, with the bottom slightly shorter in length.

Blanik Colour Schemes


Other 3 views

             
   Basic Technical data:
Span 16.20 m Landing gear:  
Length 8.40 m Main 1 wheel retractable
Empty weight 286 kg Tail 1 stearable or fixt
Max. weight 500 kg Wing  none
Best glide ratio 28.2 Construction method:  
Profiles Naca  63²A-615 / 63²A-612 Fuselage Aluminium
Engine optional Wing Aluminium
Max. speed 240 km /h Tail Aluminium
Cruising speed +/- 90 km / h
Climb Propeller
Seating 2



Full L-13Technical Data
Various attempts were made to install an engine on the Blanik
which became known as the L-13J.
Here is one example, whilst otheres can be found in this file

Information: Various articles  and documentation collected over the years

Photos:  N.Rumers

                                                       See also the various internet files on the Blanik L13


LET L-13AC Blanik

The two-seat, all-metal L 13 AC Blanik is a version of the L 13 Blanik, primarily intended for elementary glider training and for basic aerobatic. It has the same cockpit as the L 23 Super Blanik with one piece canopy allowing for excellent visibility, the tail of an L 13 Blanik, and shortened L 23 Super Blanik wings. It is fitted with a high-winged glider with a retractable main wheel and a castering tail-wheel. The intended users of the L 13 AC Blanik are clubs, commercial, and military schools where instructors and other pilots are trained in mastering basic aerobatic manoeuvres.

The aim of the L 13 AC Blanik i s to promote instruction in aerobatics, including recoveries from unusual glider attitudes. The availability of this kind of glider, similar to the original L 13 Blanik, the most widely used trainer in the world, will enable instructors to refresh their aerobatic skills, and to pass the confidence gained on to their students.

The L-13AC was sold to the USAF Academy for training their pilots and where it served the Academy Aerobatic Team well for many years. It was designated as the TG-10C in America where It proved it was capable of performing basic aerobatic maneuvers including: Chandelle, Lazy Eight, Loop, Cloverleaf, Immelmann, Split-S, Cuban Eight, Reverse Cuban, Inverted Flight, Barrel Roll, Hammerhead, and Slow Roll. In addition, it is the Academy's primary spin trainer. The TG-10C outinely demonstrated at various airshows, regional and national competitions, and all USAF Academy home football games


TG-10C

Differences in the L-13 and L-13AC

L-13AC Details from Blanik America


L-13AC Technical Data
Dimensions:
Span
14.1 m
Length
8.4 m
Height
2.09 m
Wing Area
17.4 sq.m.
Weights:
Weight Empty
305 kg
Max. Take-offWeight
500 kg
Performance:
(For the Weight 500 kg)
Glide Ratio
26
Max. Speed
230 kmIh!AS
Min. Speed
66 kmIh!AS
G-limits
+ 5.5 / - 3.5
One Person G-limits
+ 6.3 /- 4.0


Click the following Logos for more full size examples :-