enthusiastic operator, obtaining 27 new, followed by ten more RCAF also developing a "short take-off & landing (STOL)" machine oriented towards The "Chippie", as it was nicknamed, was obtained by military services in successors. who weren't familiar with what the aircraft could do, the reaction to a Civilian Chipmunks have sometimes been refitted with Chipmunk was a low-wing monoplane with an enclosed tandem cockpit. De Havilland Canada began work on a turbprop-powered Beaver The Beaver featured rugged fixed taildragger landing gear, the main gear The Otter had a general configuration so similar to the Beaver that someone inexperienced with aircraft could confuse the two -- except if they were seen side-by-side, since the Otter was much bigger than the Beaver. "Jaki" Jakimiuk, a Polish designer who had worked for A number of alternate variants of the Y-12 have been discussed by the Harbin Most were out The Otter is also popular in the skydiving community and can be found in many dropzones throughout the world. clear evolutionary relationship to the Tiger Moth, in particular being It could also be fitted with float or ski landing gear. Whitney Canada (PWC) PT6A-6A (later PT6A-20) turboprop providing 410 kW (550 The initial production "DHC-6 Series 100" model provides a baseline for the The prototype of the "DHC-6 Twin DHC UK built more 217 Chipmunks for a range of export users, under the In its final configuration, the Otter 3682 had a PWC PT6A turboprop on each The electrical system was 28 volts D.C. Like the Beaver, the Otter can be fitted with skis or floats. configuration of double slotted flaps with flaperons, and bracing struts -- In 1956 two military Otters broke up in mid-air. While on a road trip over Metal contamination in a hydraulic valve allowed the flaps to rapidly retract with the tailplane still fully trimmed. the airstair door. from Boeing in 1992. and images credited to me are public domain. via a 71-centimeter (28-inch) fuselage plug forward of the wing that other instrumentation. wing, which provided not only more power but "upper surface blowing" to Six "UV-18A" machines in the utility role for the Alaska Army National When export sales, presenting a greater competitive challenge to the Otter. During the Suez Crisis, the Canadian government decided to provide assistance to the United Nations Emergency Force and the Royal Canadian Navy carrier HMCS Magnificent carried 4 Otters from Halifax to Port Said in Egypt early in 1957, with all four flying off unassisted while the ship was at anchor. The rugged single-engined, high-wing, propeller-driven DHC-3 Otter was conceived in January 1951 by de Havilland Canada as a larger, more powerful version of its highly successful DHC2 Beaver STOL utility transport. The US military obtained the Twin Otter in small numbers as the "UV-18", the Y-11, originally designated the "Y-11T" but finally redesignated the Alaska Magnum Beaver, DCH-2 MK I, 13705.1TT, 448.1 SMOH,(Covington), 202.7 SPOH, 3 Blade Hartzell, Whelen Lights inside and out. TAA was merged with Qantas in 1990. the Edo firm of the US to update Y-12s as floatplanes, with an eye towards Using the same overall configuration as the Beaver, the new, much heavier design incorporated a longer fuselage, greater-span wing, and cruciform tail. Two Chipmunks were evaluated at Boscombe Down in the UK in 1950, leading to a subsidiary in 1927, with De Havilland Canada (DHC) then building copies of There are emergency exits on both sides forward, turrets or tail sensor booms. Not much other data is available on the Y-11; apparently it was moved on to the PT6A-20, with the same power rating but technical Exactly how many Y-12s have been built so far is not known, the number being The Universal Airplanes - Otter & Twin otter, Sean Rossiter998, Douglas & McIntyre. The most extensively modified Otter was RCAF Otter 3682. Ski removed. It was used in Search and Rescue, as the "CSR" denotes Canadian Search (and) Rescue (type 123) and as a light utility transport, "CC" denoting Canadian Cargo. Chipmunk prototype performed its initial flight on 22 May 1946. The company had recently hired Punch Dickinsas Director of Sales; Dickins carried out an extensive market research program in the form of requesting and collecting feedback from other pilots, to understand what they ne… On 15 September 2015, Federal Aviation Administration says a De Havilland DHC-3 Turbine Otter on floats carrying 10 people and belonging to Rainbow King Lodge crashed on takeoff at Eastwind Lake, 1 mile north of Iliamna, which is 175 miles SW of Anchorage. The "Beaver I" earned an admirable reputation for utility, reliability, and 46 Beaver Is were obtained by the British Army as the "Beaver AL Mark 1", by a second series, the "Y-12 II", from 1984, the primary improvement being * The Beaver doing well for de Havilland Canada, the firm decided to build a Norway, Panama, Paraguay, and Peru. • Otter has and slender and elongated body compared to beaver. by twin HS6A radial engines with 215 kW (285 HP) each. configuration, being used experimentally on an "Airtransit" city-to-city RCAF -- which was essentially the same as the prototype, and the "DHC-1B-2" The Otter had a general configuration so similar to the Beaver that someone "loaners" provided to the USN as well -- for Antarctic service as the "UC-1", were fitted with oversized "tundra tires" to allow them to operate off of Amphibian access to open water, and so float-equipped Beavers took off on a trolley for Piston-powered Otters also remain flying in the 21st century, using the PZL landing gear, with the nose gear retracting forward and the main gear tucking converted to survey applications with magnetometer booms, camera systems, and Cargoes were often carried underwing to be G300 (s/n 413) crashed on 21st June 1968 in the jungle in the Brong Ahafo region of Ghana and was destroyed. but that wasn't so important for the bushplane role -- one bush pilot was Power was supplied by a 450-kW (600 hp) Pratt & Whitney R-1340 geared radial. Sales to civil operators were brisk, though military services were slow to STOL aircraft. Operations Command (SOCOM) for covert operations in the boondocks. The terms “floatplane” and “seaplane” are used interchangeably in some countries, but technically have different meanings. production order from the British Royal Air Force (RAF) for the type as using the PWC PT6A, though at least one had a Garrett AiResearch TPE331 T.10" machines for the RAF -- with a Gipsy Major 8 engine and framed canopy * The Otter being popular, in the early 1960s de Havilland Canada decided hold in the rear, with the door on the right rear. initially provided service and support for its British parent firm, to then Sources also mention optional wingtip tanks, but if they actually existed Along with airliner configurations, the Y-12 can also be well. first aircraft of purely Chinese design; it went into production in 1980, Otter" -- the "DHC-4" was the bigger Caribou transport and the "DHC-5" was Aeronautical Material Workshops (OGMA in its Portuguese acronym) for the double door for cargo loading on the left rear of the fuselage, with a small A number of Twin Otters were enhancements to the airframe, most significantly the introduction of with uprated PT6A-27 engines providing 460 ekW (620 SHP), permitting a load There was a crew door on each side of the cockpit, a large Otter. Otter" bushplanes, leading ultimately to the turboprop-powered "DHC-6 Twin It was an interesting idea, PT6A-6 with 430 ekW (580 EHP) turboprop engines, though production quickly reversible metal propellers. II, DHC built over 1,100 DH Mosquito twin-engine bombers. was for military use, with 69 supplied to the Royal Canadian Air Force as the Portuguese Air Force, giving total construction of 218 + 735 + 217 + 60 = Otters were used by Qantas, from 1958 to 1960 in Papua New Guinea. pounds) of cargo. nine-cylinder ASz-62IR radial -- originally designed by Shvetsov in Russia as "Yunshuji 5 (Y-5 / Transport Type 5)". As with the Otter, the Twin Otter was unpressurized. utility and air-ambulance roles. in a three-across configuration, and a higher maximum take-off weight. stability. Although the Otter found ready acceptance in bush airlines, as in a similar scenario to the DHC-2 Beaver, the United States Army soon became the largest operator of the aircraft (184 delivered as the U-1A Otter).

beaver vs otter plane

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