The Lockheed C-130 Hercules is an American four-engine turboprop military transport aircraft designed and built originally by Lockheed (now Lockheed Martin).
Capable of using unprepared runways for takeoffs and landings, the C-130 was originally designed as a troop, medevac, and cargo transport aircraft. Watch the video by Biosphere Aerospace, LLC for more info:
Video shows conversion of a standard C-130H Hercules to a Dorsal pilot-optional cargo carrier. Using existing, proven, off-the-shelf aircraft and control components reduces development time and costs to small fraction of new aircraft development.
The container shares the aircraft load and can carry up to 30% more cargo than existing systems. The aircraft can also return empty (without containers), greatly increasing mission radius without adding more fuel.via/read more: Biosphere Aerospace, LLC