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.
For an aspiring pilot to spend 40 hours flying would cost $2,760 for the smaller plane or $4,360 for the larger one. However, while some pilots become proficient in as few as 40 hours, student pilots normally average closer to 70 hours of flight time before they are good enough to pass a pilot's licensing test.