DHC-4 Caribou light transport The Royal Australian Air Force DHC-4 Caribou was a versatile tactical light transport aircraft . Its main operational role was tactical air transport in support of the Australian Army. The Caribou was last operated by No 38 Squadron from RAAF Base Townsville in December 2009. The Caribou is a twin-engined high-wing monoplane with full-span double-slotted Fowler flaps and fully-reversible propellers, which allow it to achieve its trademark steep approach with very short take-offs and landings on unprepared runways. The high wing and distinctive high placement of the tail provide easy access to a large cargo compartment, while the low-pressure tyres permit operation on unprepared runways. It was the last piston-engined aircraft in the Air Force and was our only aircraft to employ the Low Altitude Parachute Extraction System (LAPES), where up to 2000kg of sled-mounted cargo is extracted from the aircraft by a parachute from a metre above the ground. The Caribou is equipped with GPS satellite navigation and night-vision equipment, giving it the capability to operate in any weather, day or night, to either land or drop soldiers and equipment by parachute with pinpoint accuracy. The Caribou is not pressurised and is not fitted with auto-pilot or weather radar. The first Caribou arrived in Australia in April 1964 and they were deployed to Vietnam from July 1964 to February 1972 and carried over 600,000 passengers and a huge quantity of cargo while they were there. Since 1997 the Caribou participated in famine-relief operations in Papua New Guinea and Irian Jaya during Operations SIERRA, PLES DRAI and AUSINDO JAYA, as well as the tsunami-relief operation in PNG in 1999 and operations in East Timor and the Solomon Islands since 1999. Their service life was over 40 years. raaf caribou aircraft

The auto tow launching mechanism was designed by Ray Jamieson of Cobram in the north of Victoria. The prototype was built the for the Corowa Gliding Club where it was used for some years. After Ray’s brother, Bert Jamieson, had witnessed the machine in use at Corowa, at Bert’s request, Ray built second one (the Museum’s exhibit) for use at Bacchus Marsh airfield. Bert lived in Melbourne at the time and was a member of the Victorian Motorless Flight Group (VMFG) which used Bacchus Marsh airfield. This occurred in the 1970s. The method of operation was to have the auto tow mechanism mounted in the back of a utility motor vehicle. The launching cable was attached to the glider. With the Volkswagen engine of the mechanism running, the tow vehicle would then drive along the runway to commence the launch. The mechanism would automatically apply brake pressure to the cable drum as the vehicle proceeded freely letting out the cable and then smoothly towing the glider into the air. When the launching cable reached a certain angle, the pilot would release the cable from the glider at which point the winching mechanism would automatically retrieve the cable in preparation for the next launch. This allowed quicker restarts and the flexibility of easily changing runways to suit the wind conditions. It made gliding a simple and cost-effective operation. Ray Jamieson and his son often used the prototype which they named “George” at Corowa in this way. With the exception of several demonstration launches, the Museum’s example of this type of device was not used by the VMFG at Bacchus Marsh due to rulings by the Department of Civil Aviation encouraging the use of aero tow launching at their site. As far as is known this is the only device of its type in the world and is indicative of the ingenuity found amongst the Australian gliding fraternity.Single drum and motorized drive mechanism mounted on a mobile steel frame.australian gliding, glider, sailplane, auto towing, launching, jamieson, corowa gliding club, victorian motorless flight group, vmfg