The whole muscle of which the muscle fibres are a part can develop force in several different ways, e.g. with the muscle as a whole shortening, lengthening or maintaining the same length while the muscle fibres contract. List of types of muscle contraction. Isotonic (of which there are two types: concentric and eccentric)
While some flight schools will advertise that you can get a pilot's license for around $5,000, the reality is that the cost generally works out to be more. A commercial pilot's license -- bigger plane, more than twice the flight time -- generally costs $40,000 to $50,000.
A sport pilot license permits a pilot to fly only light sport aircraft during the day and in good weather. According to the Aircraft Owners and Pilots Association's cost calculator, the cost for a private license runs on average $9,900, a recreational runs $7,700 and a sport license about $4,400.