United States Department of Defense - C-130 Hercules

The Lockheed C-130 Hercules is an American four-engine turboprop military transport aircraft and the main tactical airlifter for many military forces worldwide. Over 40 models and variants of the Hercules serve with more than 50 nations. In December 2006, the C-130 became the fourth aircraft – after the English Electric Canberra in May 2001, the B-52 Stratofortress in January 2005 and the Tupolev Tu-95 in January 2006 – to mark 50 years of continuous use with its original primary customer, in this case the United States Air Force. The C-130 remains in production as the updated C-130J Super Hercules.

Capable of short takeoffs and landings from unprepared runways, the C-130 was originally designed as a troop, medical evacuation and cargo transport aircraft. The versatile airframe has found uses in a variety of other roles, including as a gunship, and for airborne assault, search and rescue, scientific research support, weather reconnaissance, aerial refuelling and aerial firefighting. The Hercules family has the longest continuous production run of any military aircraft in history. During more than 50 years of service the family has participated in military, civilian and humanitarian aid operations.

The Korean War, which began in June, 1950, showed that World War II-era transports—C-119 Flying Boxcars, C-47 Skytrains and C-46 Commandos—were inadequate for modern warfare. Thus, on February 2, 1951, the United States Air Force issued a General Operating Requirement (GOR) for a new transport to Boeing, Douglas, Fairchild, Lockheed, Martin, Chase Aircraft, North American Northrop, and Airlifts Inc. The new transport would have a capacity for 92 passengers, 72 combat troops or 64 paratroopers, a range of 1,100 nautical miles (2,000 km), takeoff capability from short and unprepared strips, and the ability to fly with one engine shut down.

Fairchild, North American, Martin and Northrop declined to participate. The remaining five companies tendered a total of ten designs: Lockheed two, Boeing one, Chase three, Douglas three, Airlifts Inc one. The contest was a close affair between the lighter of the two Lockheed (preliminary project designation L-206) proposals and a four-turboprop Douglas design. The Lockheed design team was led by Willis Hawkins starting with a 130 page proposal for the Lockheed L-206 and another two-turboprop and heavier one.Hall Hibbard, Lockheed vice president and chief engineer, saw the proposal and directed it to Kelly Johnson, who remarked when he saw the proposal, "If you sign that letter, you will destroy the Lockheed Company." Both Hibbard and Johnson signed the proposal and the company won the contract for the now-designated Model 82 on July 2, 1951.