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Design of the de Havilland DHC-2
Beaver light transport was started in Toronto during late 1946. The concept behind this first of de Havilland Canada's line of effective STOL transports was influenced by the specific requirements of the Ontario Department of Lands and Forests. The resulting aircraft also suited the exacting requirements of 'bush' pilots in North America and elsewhere for an effective, rugged and reliable STOL utility transport.
The prototype was flown for the first time on 16 August 1947, and the type was certificated in Canada during March 1948. Large-scale production had already begun, and the Beaver I was soon in service, powered by the Pratt & Whitney R-985 radial. Of the 1,657 Beaver Is built, no fewer than 980 went to the US forces (YL-20 service test, L-20A and L-20B production aircraft, redesignated U-6 in 1962) and 46 to the British Army. There followed a single Beaver II with the Alvis Leonides radial and, in 1964, a few 10-passenger Turbo-Beaver III powered by the 431kW United Aircraft of Canada Ltd (later Pratt & Whitney Aircraft of Canada) PT6A-6 or -20 turboprop. Most of the Turbo-Beavers were used by civil operators. In New Zealand one Beaver had an AiResearch TPE331 turboprop engine installed. Production ended in the mid-1960s as de Havilland Canada concentrated on the development of more ambitious projects and products.
At the height of its career, the Beaver was to be found in some 50 countries, where it won universal acclaim for performance, ground stability conferred by wide-track tailwheel landing gear, and versatility. Basic accommodation was provided for a pilot and seven passengers, the latter replaceable by up to 680kg of freight. Great flexibility was bestowed on the Beaver by its ability to operate on wheel, ski, float or amphibious float landing gears.
Airtech Canada of Peterborough, Ontario, has converted a number of Beavers to take the 447kW Polish PZL-3S seven-cylinder air-cooled radial piston engine driving a PZL four-bladed propeller.
 | A three-view drawing (592 x 877) |
| MODEL | DHC-2 Beaver I |
| ENGINE | 1 x Pratt & Whitney R-985 Wasp Junior radial piston engine, 336kW |
| WEIGHTS |
| Take-off weight | 2313 kg | 5099 lb |
| Empty weight | 1293 kg | 2851 lb |
| DIMENSIONS |
| Wingspan | 14.63 m | 48 ft 0 in |
| Length | 9.22 m | 30 ft 3 in |
| Height | 2.74 m | 9 ft 0 in |
| Wing area | 23.23 m2 | 250.05 sq ft |
| PERFORMANCE |
| Max. speed | 262 km/h | 163 mph |
| Cruise speed | 230 km/h | 143 mph |
| Ceiling | 5485 m | 18000 ft |
| Range | 1180 km | 733 miles |
 | A three-view drawing (844 x 1028) |
| Robert Wilson, paw_rdw=verizon .net, 11.11.2010 I was mechanic on the beaver for a tour in Korea easy to work on, cold in the winter and hot in the summer my a/c n numbers 770 & 442 wonder whhat happened to them. 15th av.bat first cav. | | stan schroder, stanschroder=hotmail.com, 20.10.2010 The DHC should be so proud of themselves. no other aircraft manufacturer in the world can have the bragging rights that DHC has.We build aircraft to last and aircraft that everyone could only dream about building ,Boeing,had to buy the company to get the bragging rights and the Canadian goverment can only sit back and wonder what the hell were we thinking when we sold DHC.Good on all those Canadians that were involved in building the D H C Beaver They make the best,they last,their reliable,and best of all their Canadian | | Biggs, bbiggs=shaw.ca, 29.09.2010 When Viking purchased the rite to manufacture the Beaver from the original plans I could hear a cheer around the world.
Living here on the Canadian Pacific coast they are part of our daily experience and we love every time we see one.
Viking thanks. | | Biggs, bbiggs=shaw.ca, 29.09.2010 When Viking purchased the rite to manufacture the Beaver from the original plans I could hear a cheer around the world.
Living here on the Canadian Pacific coast they are part of our daily experience and we love every time we see one.
Viking thanks. | | Bill Scharff, bill.scharff=columbus.rr.com, 23.09.2010 What a fun plane to fly. Flew Army Beavers in Vietnam and Germany. During my year flying OV-1's in Vietnam our Beaver was the only airplane I took combat damage in. | | Bob Pedigo, pedigob=bellsouth.net, 18.09.2010 I took instrument training in the L-20/U-6 at Ft Rucker, AL and it was love forever after. I went on to Europe and flew it for three years in some terrible weather conditions and it always came through. I agree that you could always seem to get one more bag on board and if you could get it on board, you could get it off the ground. I've gone into a lot of unimproved field strips and it is terrible to say even one thng bad about the Beaver but the crosswind component of 20 knots was too high. The wind would blow those boxy sides into the bushes unless you could drag the upwind wing on the ground, land it on one main gear, slowly lower the tailwheel to get some control and then lower the downwind wheel to the surface. | | Dave Smart, cobrabird55=cfl.rr.com, 24.08.2010 While in the USAF in the mid '60's when we were needed in a hurry, we were sometimes shuttled to the outling Atlas F missile silos 20 to 50 miles outside of Abilene Tx in Beavers. They would land in the farmer's fields adjacent to the silos, clean out the farmer's crops from the landing gear and depart. Very short landing and takeoff runs. | | Ron Susi, rsusi14=comcast.net, 23.08.2010 Flew the U-6 in Thailand in 1966 from NKP. I will testify that you can fly it into the side of a mountain and walk away. Did it on the Thai Cambodian border. | | Eugenio Gallardo, elpilotogallardo=gmail.com, 13.05.2010 Please if somebody has a new of a plane for sale write to me , my mail is elpilotogallardo@gmail.com. I am a chilean pilot so I need a plane to fly in the south of Chile . Tks All Eugenio Gallardo | | Nick Parkinson, nickp=soloy.com, 31.03.2010 I remember the Alvis powered version while working at DH's in Hatfield. Probably late fifties. I will look for photos in a DH company journal if I stillhave it. | | Benny C. Wallace, waldopepper9=aol.com, 14.02.2010 I am looking for a company that can make me a model of the USAF version (L-20) of the Beaver (equipped with snow skis,if possible.)I flew it from a remote radar station in Canada in 1959. B.C.Wallace | | murray k, airdatanz=yahoo.com, 11.02.2010 No Beaver ever flew in New Zealand with an AiResearch TP331 turbine engine. This conversion was done in Australia where the aircraft was used for parachuting among other thinds | | John Coleman, johndcolemanemail=yahoo.com, 22.01.2010 I was in the last Army Instrument Class that trained in the Beaver, then for a year with the MIBARS in Vietnam, then in Germany.....you could even fly this baby into a mountain and if you hit with the nose up about 15 degrees you were going to walk away to fly another day. Scotty MacDonald..are you out there? | | Barrie Davies, trendyt=tele2.nl, 16.01.2010 I flew a British Army Beaver for 6 years, 3 of them in Borneo on active service during the mid 60's. It was a pleasure to fly, reliable, easy to use for military purposes and as Chuck said above it could land on a dime and was very very forgiving, especially for over-loads out of short strips. I'm sure I'm still here today because it was a Beaver I had strapped to my behind and not any another single engined aircraft. I have suffered from "Beaver Fever" ever since ! Thank you DHC. | | Bob Leslie, Monicabobb24=aol.com,, 08.01.2010 I flew many hours in the L-20 Beaver in Alaska 1950-52 flying out of Ladd Field. Flew on skis from Uniat positioning fuel drums and supplies for oil exploration north of the Brooks range. Great Airplane | | Dick Beck, beckon1=verizon.net, 01.01.2010 I was stationed in Iceland in the early 60's. We used the Beaver to get around the island. It does everything at about the same speed. You could bounce it into some pretty remote spots with great confidence. And, like the family station wagon, you can always get something else in it! | | Tony Chapa, tony.chapa=sbcglobal.net, 09.12.2009 I learned to fly instruments in a U.S. Army L-20 in 1961 and flew it in Vietnam for a year in 1963-1964. Great airplane. I loved it and wish I had an opportunity to fly one again. | | Mike Green, 22.07.2009 Canada's greatest contribution to the world of aviation, the Beaver wouldn't go away even after the advent of the "Turbo-Beaver" I think of all the nicknames stuck on this little airplane, my favorite is "The flying pick-up truck" | | John Redmond, redmond724=aol.com, 03.06.2009 Looking for a DHC2 deHavilland, hi wing monoplane, balsa wood model airplane to assemble-can you help--Thanks, John | | Chuck, chopper27=aol.com, 17.05.2009 I flew Beavers in Vietnam in 1972, flying into Cambodia on radio relay missions. It took us forever (it seemed) to climb to 15,000 feet to orbit at a predetermined location. The mission took about 20 minutes but I could feel the effects of hypoxia setting in. It took no time to get below 10,000 feet. With full flaps, it could land on a dime. It was a very forgiving aircraft and a joy to fly an aircraft with a round engine. |
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