Wednesday, August 18, 2010
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Dedicated towards encouraging the use of amphibious vehicles for Sabah that is rich in natural beauty but difficult to access.
(cos a) ^ 2 = L f / T r
Where a is the angle of attack,
L is the Lift engine thrust, f is its distance from CG, direction is at right angle to the line pointing to CG,
T is the vertical main engine thrust , r is distance of the starting point of thrust, from CG.
!doctype>Why we use a Rubber Inflatable Boat (RIB ) as a float
The FIB's is designed to fly on all water surfaces including the sea which is the largest runway available in the world.
The pontoon's system, popular in the ultralight field, was not found safe and seaworthy for a weight shifting machine. It's well known that a single hull seaplane has better performances in rough sea than the conventional pontoon's like the catamaran style .
For this reason the most popular seaplanes in the world are all single hull : like the Catalina, the Canadair, and more .
After two years of testing Polaris Motor chose a specially made RIB (Rigid Inflatable Boat) for floating, that permitted safe take off and landings even in fairly rough sea.
The boat jumps from one wave to another with out any problems till it reaches it's take of speed. The boat also protects the whole machine (including the propeller) from the water during take off with big waves, leaving the pilot, passenger, and engine 100% dry. In case of very bad landings, the boat slips around avoiding capsizing and relative damages .
Compared to a machine equipped with pontoon catamaran style, the inflatable boat has a more naturally aerodynamic shape that reduces the drag in the air and does not interfere negatively with the control of the aircraft.
For this reason the FIB allows take off and landing up to sea strength 3/4 without any problems. Without a wing FIB is a very fast airboat.
With the wheel kit the FIB can be transformed in few minutes in a land trike to fly in land or, with ski, on ice and snow. The fiberglass hull of the RIB is specially designed for surfing fast with low power, this allows the FIB to reach the take-off speed in a very short run. It's easy to understand that the FIB is very safe while taxiing in water to reach take off and landing areas, and has many advantages if compared to other sea ultralights: transport on a little trailer, storage, parking on beaches, docks etc.
Why Sabah is ideal for Ultralight Amphibious Aircraft?
Sabah is among the least developed in infrastructure anywhere in the world. Difficult to reach conveniently many of its beautiful places. Even aeroplanes will have difficulty in landing because there are not many airports or open spaces.
Sabah has the most beautiful sceneries in the world in the smallest area possible.
Sabah has a large coastline with many beaches and islands where amphibious aeroplanes can land and find shelter, making amphibious aeroplanes the safest vehicle and yet the most convenient and fastest.
Sabah is free from natural disasters such as hurricanes and tornadoes that will make flying extremely dangerous.
An ultralight amphibous aeroplane such as Seamax has a low landing speed and therefore will still be safe even when its engine fails. It can even be equipped with parachutes to make it even safer.
An ultralight aircraft is very economical to operate.