Artistic illustration "POSEDON" © Konstantinos Panitsidis

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Master thesis of C. Fotiadis (Synopsis)

The basic design is a 2 engine low wing with a "V" shaped tail and a hydraudynamic haul. The construction materials are mainly AMG61 and steel. The control surfaces are made of composite materials. Protection from corrosion is mainly achieved by special coating MIL-F-7179.

Fuselage: Semi-monocoque construction, contains the cockpit, seats for the crew and passengers and the electronic equipment. The main passenger cabin is 25 m long, 3,70 m wide with reinforced floor. In the fuselage is located also the auxiliary engine. There are 4 doors for embarking- disembarking of the passengers. The underwater has a hydraudynamic "step".

Wing: Its aerodynamic profile is optimized for flights in the “ekran” effect. It has increased attack angle, low elongation l and zero angle wing sweep. Along the trailing edge are located ailerons (consisted of 2 parts), which can be rotated in angles between +25...-15 degrees. The wing mechanisms help in increasing the wig effect during take off. On both edges of the wing there are floaters.

Tail: In order to decrease the directional instability, due to wig effect, the tail is positioned high enough, out of the effect. It has a "V" shape. The horizontal part has a zero angle wing sweep, while it is equipped with altitude control surfaces, consisted of 2 parts. The vertical part has a 38 degrees angle.

Landing system:The special construction of the fuselage, allows it to maneuver over flat surfaces, like snow and ice, due to the air underlayer. It can also come out on even land with a 10 degrees inclination, enabling easier dis- embarking of the passengers and the technical periodic checking.

Engine: It is equipped with 2 turboprop engines TV7-117VMA of 1837 kW power each. They are installed with a 4 degrees angle to the craft axis. They allow the flow of the gas to go under the wing helping thus the take off process. Starting of the engines is done with the help of the AI-9-3B auxiliary engine. Fuel tanks are located in the wings.

Equipment and systems: The craft carries onboard navigation systems, and radio communication. A radar is located at the nose of the craft. There is a collision-warning system and an automated flight system. It has also all the necessary equipment for sea navigation and emergency stationing on water.