The LET L-23 Super Blaník is a two-seat, all-metal structure glider with fabric covered control surfaces. The aircraft is primarily used for

flight training Flight training is a course of study used when learning to pilot an aircraft. The overall purpose of primary and intermediate flight training is the acquisition and honing of basic airmanship skills. Flight training can be conducted under a str ...

; its single-seat sister model is the

Let L-33 Solo The Let L-33 Solo is a Czech shoulder-wing, single-seat, glider, designed by Marian Meciar and Vaclav Zajic, and produced by Let Kunovice. The L-33 first flew in 1992 and remained in production through 2012, supplied as a ready-to-fly aircraft.Ba ...

Design and development

The Super Blaník is an improved version of the original

LET L-13 Let or LET may refer to: Sports * Let serve, when the served object in certain racket sports hits the net and lands in the correct service court, such as; ** Let (badminton) ** Let (pickleball) ** Let (tennis) * Ladies European Tour, the lad ...

Blanik. The

cockpit A cockpit or flight deck is the area, on the front part of an aircraft, spacecraft, or submersible, from which a pilot controls the vehicle. The cockpit of an aircraft contains flight instruments on an instrument panel, and the controls th ...

is somewhat roomier in the L-23, and some differences are a swept fin and a

T-tail A T-tail is an empennage wikt:configuration, configuration in which the tailplane of an aircraft is mounted to the top of the vertical stabilizer, fin. The arrangement looks like the capital letter T, hence the name. The T-tail differs fr ...

, and on the L-23 flaps were deleted to save weight since they were rarely used on the

. The airbrakes were retained however, and these open on both the top and the bottom of each wing. LET also moved the

tailplane A tailplane, also known as a horizontal stabilizer, is a small lift (force), lifting surface located on the tail (empennage) behind the main lifting surfaces of a fixed-wing aircraft as well as other non-fixed-wing aircraft such as helicopters ...

to the top of the

vertical stabilizer A vertical stabilizer or tail fin is the static part of the vertical tail of an aircraft. The term is commonly applied to the assembly of both this fixed surface and one or more movable rudders hinged to it. Their role is to provide control, sta ...

for better protection in case of an outlanding. It also has a new instrument suite. The aircraft has a two-piece

canopy Canopy may refer to: Plants * Canopy (biology), aboveground portion of plant community or crop (including forests) * Canopy (grape), aboveground portion of grapes Religion and ceremonies * Baldachin or canopy of state, typically placed over an a ...

, where the front part opens to the right, and the rear part opens upwards and to the rear. This was done to improve vision compared to the L-13. From serial No. 968401 it was delivered with a one-piece canopy, that opens to the right only (with a very small canopy section opening to the rear at the wing root). The maximum number of occupants is two. If it is to be flown solo, the

pilot An aircraft pilot or aviator is a person who controls the flight of an aircraft by operating its Aircraft flight control system, directional flight controls. Some other aircrew, aircrew members, such as navigators or flight engineers, are al ...

must be sitting in the front seat and his weight (including

parachute A parachute is a device designed to slow an object's descent through an atmosphere by creating Drag (physics), drag or aerodynamic Lift (force), lift. It is primarily used to safely support people exiting aircraft at height, but also serves va ...

and

ballast Ballast is dense material used as a weight to provide stability to a vehicle or structure. Ballast, other than cargo, may be placed in a vehicle, often a ship or the gondola of a balloon or airship, to provide stability. A compartment within ...

) must be at least 70 kg (154 lb). If the pilot's weight is less than 70 kg (154 lb), it is necessary to use ballast to bring the total weight in the front above the required limits. A weighted seat weighing 15 kg (33 lb) is available to replace the soft seat cushion bottom in the front seat. The United States Air Force Auxiliary

Civil Air Patrol Civil Air Patrol (CAP) is a Congressional charter, congressionally chartered, federally supported Nonprofit corporation, non-profit corporation that serves as the official civilian auxiliaries, auxiliary of the United States Air Force (USAF). CA ...

uses the L-23 as a trainer for cadets. Blanik Aircraft CZ s.r.o. plans a new version of the L-23, the L23NG (New Generation), with

winglets Wingtip devices are intended to improve the efficiency of fixed-wing aircraft by reducing drag. Although there are several types of wing tip devices which function in different manners, their intended effect is always to reduce an aircraft ...

and slightly higher performance (L/D ratio: 31). It will have an improved fuselage and one-piece canopy.

Variants

;L-23 Super Blaník :Original variant ;L23NG :"New Generation" variant with winglets, an improved fuselage, and a one-piece canopy. ;TZ-23 :

Brazilian Air Force The Brazilian Air Force (, FAB) is the air branch of the Brazilian Armed Forces and one of the three national uniformed services. The FAB was formed when the Brazilian Brazilian Army Aviation (1919–1941), Army and Brazilian Naval Aviation, Nav ...

designation of the L-23.

Specifications

References

External links

sailplanedirectory.com
{{DEFAULTSORT:LET L-23 Super Blanik 1980s Czechoslovak sailplanes Glider aircraft L-23 Forward-swept-wing aircraft Aircraft first flown in 1988 T-tail aircraft

Design and development

Variants

Specifications

See also

References

External links