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.
This group excludes regional, national and international airline pilots. Commercial pilots earned a mean annual wage of $76,050 a year as of May 2011. The median reported salary was $70,000 per year, and the median-earning 50 percent of commercial pilots earned between $50,850 and $92,340 a year.