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Aerospace Education

Yamaha RMAX unmanned helicopters

Advanced technology, proven high performance and high tech safety features mean efficient, effective problem solving for many industries. Incorporating easy-to-use practical functions and equipment that enhance work efficiency. Agricultural uses include spraying, seeding, remote sensing, precision agriculture and variable rate dispersal. During the development stage of the RMAX helicopter, the specs for the various components were determined by taking the following three priorities into consideration: 1) To pursue the utmost spraying efficiency. 2) To improve reliability. 3) To give the helicopter room for future expansion.

The maximum takeoff weight is 95kg or 209.439 Lb. it contains a water-cooled, 2-stroke, horizontally opposed 2-cylinder engine. It runs of regular gasoline mixed with 2-stroke engine oil. In the spring of 2003, Yamaha released the RMAX type II G. they RMAX was first introduced in 1998. Presently about 1,600 unmanned helicopters are in use in Japan’s farming industry for crop dusting and other countries are starting to notice the potential of these helicopters.


A hovercraft may not seem like an aircraft upon first glance but with a more in depth look it is quite clear that a hovercraft is indeed an aircraft. The definition of aircraft is – any machine that is capable of flying through the air or atmosphere; included are ultralights, airplanes, gliders, balloons, helicopters, hangliders, and parasails. The atmosphere of the earth starts at the ground and ends about 300 miles above the surface of the earth. A hovercraft is there for an aircraft because it “flies” approximately ¼ inch off the ground in the atmosphere. As most would expect, newton’s three laws of motion affect hovercrafts just as they do to other vehicles. Newton’s first law of motion, an object at rest will remain at rest unless acted on by an unbalanced force, affects a hovercraft through gravity and friction preventing the craft from moving unless the hovercraft’s source of lift is active, then the hovercraft has less friction acting upon it. Newton’s second law, the relationship between an object’s mass, its acceleration, and the applied force, affects a hovercraft through the mass applied to the craft decreasing the acceleration speed. Newton’s third law, for every action there is an equal and opposite reaction, the lift produced by the hovercraft power source is opposed by gravity and they are balanced allowing the hovercraft to glide. 

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