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51 Junior

SZD 1951 Junior

flown: 12/31/1980
Wingspan: 15.00 m
Length: 6.69 m

Height: 1.57 m
Wing Area: 1 2, 51 m²
extension wings 1 7.9

wing shape and : S02-196 Wortmann> S02/1-150

Weight: 225 k g

Total weight: 3 80 k g

load area: 30.38 kg / sq
Excellence: 35 at 80 km / h
descent speed: 0.58 m / s at 70 km / h
Speed \u200b\u200bmin.: 55.0 km / h
permissible speed: 220 km / h

In sp ółczynniki burden perm. : 5.3 g -2.65 g

SOME HISTORY

In 1978, stopped producing wooden glider Pirate. Produced several hundred copies nasyciło Polish for some time (and not only) aeroclubs training equipment. Introduction of laminate Owl m.in a glider school, made it necessary to supplement the missing link in the training cycle: two-seater glider school - seater trainer - the high-performance. We had to think about school and training glider, which unify the operating equipment in the future, replacing not only the Pirate, but the intermediate types, rubbing more and more flies 100 and Standard, a few Seals and Cobra. Also lacking in the world of cheap glider club (the production of K-6 and K-8 in Germany was completed in the years 1972-3). There is a chance for too many hundreds of copies of such a glider, because with the spallation of the older generation equipment, there are many different companies wysokowyczynowych structure completely absorbing capacity of the generators. Of necessity, so older gliders adapted to the role of High Performance treningówek for pilots by picking the first steps in a feat of gliding. Since work on the glider club was conducted at the Centre for Research and Development PDPS since 1973 (the project was developed laminate SZD-47 Club, which was not), but the development and production of family wysokowyczynowych amber led that the only resumed in 1979, as part of the problem of hub 05.6. Formal work on the Junior launched Ordinance No. 5 of the Ministry of Machine Industry 24.05.1979r. Leading designer of the glider pilot has been known mgr.inż Stanislaw Ziętek and technologist Andrew mgr.inż Papiorek. The project was started 1.01.1979r. the technical design and implementation of simplified instrumentation workshop, which came Pre-prototype X-115 flown 31.12.1980r. Works by the test pilot in Bielsko mgr.inż Januarius Roman. Conducted tests in 1981 led to the factory setting of the final solid glider (changes span and stroke and the horizontal tail span ailerons), and the desired characteristics of the pilot team. In the years 1982-1983 was a technical project, which takes into account published in 1981. in Germany set up a "project of the output single-seater glider club class", and in force since 04.01.1980, the airworthiness of aviation JAR 22 categories in use. Pathways prototypes to series production was performed in Bielsko and flew X-116 08.10.1983, and X-132 in November 1983, two Roman flew January. Later that same year, developed and implemented a program of ground static test: The Institute of Aviation made attempts resonant construction, and WSK Mielec performed computational analysis flatterową (first time in communist Poland). Until end of 1984 was completed successfully test prototypes and obtained state certification Polish. Later this year, implementation started in Bielsko SZD-51-1 Junior into production, developing technical documentation and instrumentation workshop, started the construction of a series of informational nine gliders, later increased to 12 units.

new concept of technology has enabled a significant reduction of the production cycle to one day in two shifts (which so far only managed to German Groß label), and the shift system enabled the production of the year about 150 gliders (for comparison, production of Jantar Std 3 closed up the number 50 copies). Such results were possible because of the far-reaching integration of structural components and assemblies glider (np.dźwigar with solid laminate wall - patented solution), and modern instrumentation solutions podukcyjnego. The glider's design uses a number of innovations such as fiberglass, covered with canvas rudder of very low mass, mounting hooks starter bearing elements in the cabin, fuselage frames. This leaves a vacuum forming the laminate shells, using the free formation of foremnikach. Thanks to such solutions, the mass serial glider prototype is less than about 20 kg. and from pre-prototype of 25 kg. and ranges from 215 kg. The production technology also enables the use of an alternative domestic textile fabric instead of STR Interglass German company. The simplified approach enables the employment of technology in the production of low-skilled workers, which at that time the difficulties in the labor market was not without significance.

After the start of a series of information (the first 12 copies), the production of the glider was transferred to subsidiaries in Wroclaw And decided to restore full production capacity plant of amber items yet. The first five copies of a series of information about factory numbers B-1495 (SP-3298) to B-1499 (SP-3302) was completed in December 1984. (The first of them flew Stanislaw Zientek). By submitting Aeroklubowi PRL 10 gliders, expected at the first opinions and experiences with their eksploatacii. Next 6 gliders purchased, Switzerland, and inquiries were received from Germany, Austria, Australia, Turkey and East Germany. Intensive exploitation of minor ailments revealed: too frail frame limo causes cracking of the glazing, so from the third series of gliders improved as the stiffer structure. Landing in the adventitious revealed a weak point in a glider: płózka residual metal under the front of hull damage caused in the place of installation of stronger pressures on the podparciu? Murder? during landing. Users homemade zaradzili ago, dismantling płózkę introducing concentrated force, which resulted in the distribution of pressure over a larger area. Also changed the suspension lower rudder and a change in mocowaiu tail height. In the meantime, were conducted glider and fatigue tests, which allowed the extension of service life originally from 1500 to 3000 hours, and then in 1993 from 6000 flight hours. Conducted further tests were to cause fatigue to give the target service life 10,000 hours of flight augured Junior longevity as a popular glider to fly cheap. In the opinion of users is a very good glider, whose operation is a pleasure, also from the technical and maintenance. By the end of 1996, produced 215 copies of the glider, of which 161 were exported to six continents. In 1990, Brazil has purchased a license Junior.

DESCRIPTION TECHNICAL

Single-glider club with glass-epoxy laminate in the system grzbietopłata of T-type tail unit and a fixed undercarriage.

• Hull: fiberglass reinforced completely in the back of the conduct półwręgami push the steering system and the foam ribs. The central part is a steel truss wlaminowana node representing the main landing gear bracket and a connecting wing to the fuselage on four pins setting. Cabin equipped with a column of the instrument panel laminate cover, in an array radio station is a block built 6101 RS manipulator placed in the front panel. Table 4 provides cab appliances and a diameter of 80 mm 2 with a diameter of 60 mm. Seating bowl removable for ease of use, the steering system components, so the lower hook position adjustment via remote control pads of varying thickness on the fly and adjustable pedals. One-piece canopy, opening to the right of rejected an emergency. Instant-two catches: the front of towed and bottom of flights to take off for winch, opening one regardless of whether linkowym handle on the instrument panel. The possibility of installing an oxygen apparatus. Chassis: The main - 400x140 with nieamortyzowanym wheel equipped with a brake disc, 200x50 rear wheel.

• Wing : bipartite, with the outline and profile dwutrapezowym Wortmann SO 1 - 196 at the base of the passing of lotkowej SO 1 / 2 - 158, with sheer 3 °. Monocoque construction, sandwich, with a metal rib jednodźwigarowa closing. Dwuteowy girder with unbalanced wall for closing the brake chamber laminated and aerodynamic components drives the headset. Lotka Shell suspended with five points, driven in one. Airbrakes single-only on the upper surface of the wings. Coupled drives automatically mount, pusher.

• tail: in the system T, sandwich construction. The built-fin antenna transceiver and the probe connector assembly of electrical variometer. The rudder is covered with canvas, well-balanced weight. Installation of tail with a single pin secured snap. Rudder trimmer wysokści two pieces of spring (spring acts on the elevator cam). Drive Pitch popychaczowy, rudder wire.

• Equipment: Standard - altimeter, speedometer, magnetic compass, clinometer with an electric turn indicator section, the vertical speed of the compensator and vessel expansion. possible by building equipment. wishes of the recipient. Adaptation to oxygen equipment installation TA 03A or otherwise, supplied by the customer. The possibility of building off the hook with rubber rope. Type hooks TOST TOST E 72 and G72, or Polish SZD-III A 56th
  

• painting: the whole glider painted white with red tipped wings and front hull. At the base of the fin brand with a factory SZD SZD 51-1. Under the pilot's cabin, on the left side of the stylized word? Junior? in gray. Registration marks in gray at the bottom of the left wing and both sides in the middle of the beam hull. Overlays CDs air brakes in multiple copies in the natural color of duralumin.

During the operation there were many different paintings done egzeplarzy after accident repairs.

SPECIFICATIONS AND PERFORMANCE

Span:	15 m
Length:	6.69 m
Height:	1.57 m
Wing area:	12.51 m 2
load area:	30.40 kg / m 2
Elongation:	18
wing Height:	3 °
chord przykadłubowa:	1.115 m
average aerodynamic chord:	0.88 m
Span tail height:	2.75 m
Tail Area:	1.55 m 2
Maximum weight:	200-240 kg
Payload weight:	140 kg
weight max. in flight:	380 kg
Minimum speed:	61 km / h
minimum descent:	0 , 60 m / s
at speed:	72 km / h
Max. Excellence:	35
at speed:	78 km / h
speed limit:	220 km / h
Towing Speed \u200b\u200bLimit:	140 km / h
limit load factors:	5.3 + / -2.65 g