Ader Avion III

The Avion III was a primitive steam-powered aircraft built by Clément Ader between 1892 and 1897, financed by the French War Office.
Retaining the same basic bat-like configuration of the Éole, the Avion III was equipped with two engines driving two prolellers. While the earlier aircraft had no means of directional control at all, this one was equipped with a small rudder.
Trials of the aircraft began at the Satory army base near Versailles on 12 October 1897, with the aircraft taxiing along a circular track. The first flight was attempted on 14 October and most sources agree ended almost immediately in a crash without ever leaving the ground. Late in his life, Ader would claim that there had been a flight of 100 m (328 ft) on this day, and said he had two witnesses to confirm it. Whatever actually happened, the French military was unimpressed with the demonstration and cancelled any further funding

Edgar Percival E.P.9

The Edgar Percival E.P.9 was a 1950s British light utility aircraft designed by Edgar Percival and initially built by his company, Edgar Percival Aircraft Limited and later as the Lancashire Prospector E.P.9 by the Lancashire Aircraft Company Limited.In 1954, Edgar Percival formed Edgar Percival Aircraft Limited at Stapleford Aerodrome, England, his original company had became part of the Hunting Group. His first new design, the Edgar Percival E.P.9 was a utility aircraft designed for agricultural use. Construction numbers (c/n) commenced at 20 onwards. The aircraft was a high-wing monoplane with an unusual pod and boom fuselage. The pod and boom design allowed the aircraft to be fitted with a hopper for crop spraying. The pilot and one passenger sat together with room for four more passengers. The clamshell side and rear doors also allowed the aircraft to carry standard size wool and straw bales or 45 imperial gallon oil drums or even livestock.

Jodel D11

The Jodel D11 is a French two-seat monoplane designed and developed by Société Avions Jodel in response to a French government request for a low-wing aircraft for use by the nation's many emerging flying clubs.Designers Édouard Joly and Jean Délémontez based the design on two of their earlier projects; they combined the wing of the D10 with a lengthened and widened version of the D9 fuselage. The first example flew on 4 April 1950. Of conventional taildragger configuration, the D11 featured fixed, spatted undercarriage, and accommodated pilot and passenger side-by-side. The wing panels outboard of the landing gear struts had a marked dihedral. Various powerplants were installed, typically Salmson 9, Continental A65 or Continental C90.

ZLIN Z-50 LS

The Zlin Z-50 is one of the most famous sports planes used in aerobatics. It was made by the Czechoslovakian fabricator Zlin Aircraft.In autumn 1973 it was decided in Moravan Otrokovice to develop a new single seat aerobatic airplane. The design team was headed by Jan Mikula, a noted Czech designer. During the design phase, computer optimization was used to optimize the desired aerodynamic characteristics. The principal goal was to determine the optimum engine and propeller combination for this aircraft. Designers settled on the Avco Lycoming AIO-540 D4B5 horizontally-opposed six-cylinder piston engine, rated at 194 kW (260 HP), driving a three-blade Hartzell constant speed propeller.
The prototype Zline Z-50L (L for its engine), with civil registration OK-070, first flew 18 months after start of design work, on 18 July, 1975. The first flights were very successful and confirmed all of the designers' promises. The Czech Aerobatic Team would bargain for this plane in World Aerobatic Championship in 1976.
The Z-50L became the first composite fabricated special aerobatic airplane in the world. It was certified per the US FAR regulations, with limit maneuvering load factors of +9.0 and -6.0.
In 1981, a more powerful Textron Lycoming AEIO-540 L1B5D with 224 kW (300 HP) was installed. This version was the Zlin Z-50LS and was first flown by Zdenek Polasek on 29 July 1981. The more powerful engine enhanced vertical maneuvers. The Zlin Z-50LS can fly with a weight of 760 kg from +8G to –6G in the aerobatic planes category (A Category), and between +3,8 and –1,52 in the normal category (N category). Many Z-50 L and LA versions were rebuilt to the Z-50LS standard in the early 1980s.
Another version derived from the Zlin Z-50 aircraft is a "baby fifty" – Z-50M with a lower powered Avia M-137AZ engine of 134 kW (180 HP). This was constructed for replacement of older and inconvenient Z-526 models, which were often converted to N (normal) category and used as glider tugs at many aero clubs. The Z-50M has limit maneuvering load factors of +7 and -5,5. Only eight Z-50M aircraft were built.
In April 1990 a Z-50LS received modified wings and was evaluated to determine if maneuverability was improved. The plane was designated Z-50LE (Experimental). This type remained only as a prototype.
The last version of Zlin 50 is the Z-50LX, which first flew in 1991, piloted by Zlin's chief pilot, Vladmir Peroutka. This version received additional fuel tanks in the wings and a robust smoke system for airshow routines; it was produced principally at the urging of show pilot Victor Norman. From 1992 to 1995 seven Z-50LX were built, and four of them are also used by the Red Bull Flying Bulls Aerobatics Team.