ULTRA LIGHT AIR CRAFT

ULTRA LIGHT AIR CRAFT

ABSTRACT:

Ultra light air crafts are the general aviation planes with reduced weight capacity between 2-3.

The weight reduction is the main aim in the light weight air craft. The modification done in the new air craft is to reduced the overall weight as much as possible so that the air craft can achieve higher flight speed in the very small time. Also we can start air craft in very les time. Some modifications are done in the engine specifications and other equipment replaced by light weight material which is the main aim of light air crafts.

Moreover with reduced weights ultra light can loose air speed quickly during the flair.

History and evolution:

It all starts in the late 19th century when Percy Pilcher built himself asset of wings and launched himself from a purpose built hill. This was the origin of aviation in the United Kingdom. The aircraft he flew was the first primitive hang glider, which he flew from a field close to a base at swinford. Shifting body weight, in a similar way to modern hang gliders, controlled it. These early beginnings led to the high performance wings that we have today.

During the late 1970s, a few pioneering hang glider pilots experimented with engines on their machines to enable them to fly from flat field sites. This led to the development of the modern micro light or ultra light aircrafts. The sport developed in two directions. The first being weight shift, derived directly from the early hang glider. The second type is the 3 -axis machine that looks similar to conventional light aircraft. Ultra light flying is an exciting fast growing sport, which doesn’t have to be prohibitively expensive.
In the U.S.A. an ultra light is defined in federal aviation regulations far part 103 (and subsequent advisory circulars) as a single seat powered flying machine which weighs less than 254lbs, has a top speed of 55 knots (63 mph), stalls at 24 knots (28 mph) or less and carries no more than 5 gal. Of fuel. Excluded from the empty weights are floats for water landings and safety devices intended for deployment in an emergency. The weight allowance for an emergency parachute is 24 lbs. So an ultra light with a parachute could weigh 278 lbs.

In Australia the ultra light definition is:

Less than 150 kg empty weight.
Less than 300 kg all up weight.
Empty weight wing loading of 15 kg per meters squared.
All up weight wing loading of 30 kg per meters squared.
The all above specifications are generally adhered to by the various manufacturer’s the world over.


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