de Havilland Beaver




https://www.youtube.com/watch?v=9rvvo5afCjQ

YouTube - de Havilland Beaver

Specifications
Primary Function:
Seats:
Engine:
Power:
Length:
Wingspan:
Weight Empty:
Max. Weight:
Fuel:
Payload:
Cruise Speed:
Max. Speed:
Climb Rate:
Ceiling:
Range:
First Flight:
transport
four
P&W R-985
450 h.p.
30 ft. 4 in.
48 ft.
2,850 lbs.
5,211 lbs.
141 U.S. gals.
2,100 lbs.
130 mph
160 mph
1,020 fpm
18,000 feet
470 miles
8/16/47



deHavilland_Beaver

de Havilland Beaver

The de Havilland Beaver is a high wing monoplane powered by a single radial engine that was produced to take off and land in short distances while equipped with heavy loads and optional floats. The design can withstand the rigors of sub zero temperatures and less than perfect landings on unimproved air strips, ice, snow, or choppy waters.

The de Havilland Beaver first flew in 1947 with production continuing through 1967. A total of 1,692 were produced of which some 718 were sold throughout the world. The remainder were purchased by the United States government for use by their army, navy, and air forces. The airplane was even used by the U.S. as a utility transport over Korea during the Korean War. Several hundred de Havilland Beaver aircraft continue to fly today.

The de Havilland Beaver has a one ton load capacity, even when equipped with floats. Its rear doors are large enough for easy loading and unloading of 55 gallon drums. It is a true workhorse.

Three fuselage fuel tanks, with a total capacity of some 95 gals., are located in the bottom front of the airplane. This makes for easy refueling. The wing tanks of the de Havilland Beaver hold an additional 46 gals. of fuel. When flying the de Havilland Beaver, extra attention must be paid as fuel is consumed in order to keep the airplane properly balanced.

Cold starting the radial engine is a bit more involved than with a conventional engine. To prevent locking that can result from the pooling of oil, the propeller is hand turned several times. Once started, the engine is run at idle for twelve or so minutes to make sure its oil supply and total mass is properly warmed.

Throttle management during take off acceleration is necessary so as not to build up excessive manifold pressure. This is a relatively large, heavy, single engine airplane, and while it will not get into the air as quickly as a lighter airplane, its short take off, especially when fully loaded, is impressive. The flaps of the de Havilland Beaver operate in conjunction with its ailerons to help produce exceptional lift.

Although the de Havilland Beaver has a rather large side profile, cross wind landings and take offs are not difficult for experienced pilots. The controls are not heavy as one would expect, and are pleasant to handle. However, no one could ever say that the de Havilland Beaver is quick to respond to control inputs.

The radial engine of the de Havilland Beaver and overall bulk produces lots of drag. Landings are made with the nose down and extra attention paid to speed on final. Bringing the nose up, even under full power, will just make the airplane mush. To regain altitude, the stick must first be moved forward. So long as the limitations of the airplane are observed, landings are easy.

In 1964 a turbine engine de Havilland Beaver was produced. Its engine had about 125 more h.p. than the standard radial engine and the airplane was some two feet longer. However, only 60 were built.

A total of some 1,657 de Havilland Beaver aircraft of all types were built before production ended in 1967.

deHavilland_Beaver

de Havilland Beaver

The de Havilland Beaver pictured just above from HobbyKing has a 71 in. wingspan and is 47 in. long.  Included with the ARF are flaps. Weight is around 6 lbs.

HobbyKing has a smaller de Havilland Beaver with a wingspan of 40 in. and length of 28 in.  It is of all wood construction.

The de Havilland Beaver from Ever Soaring Models - ESM has a 95 in. wingspan and is 61 in. long. The ARF has a glass fibre fuselage and all wood wings with working flaps. It can be propelled by 35 cc to 56 cc engines and should weigh about 17 lbs. all-up.

E-flite's de Havilland Beaver is made from balsa and ply.  Its wingspan is 68 in., length is 43 in. and weight is about 5 1/2 lbs.

The GWS de Havilland Beaver has a 40 in. wingspan and 27 in. length. It weighs only 13 oz. ready to fly. Included is a geared 370 motor.

The de Havilland Beaver from Texas RC Planes has a 118 in. wingspan and is 78 in. long. It comes with optional floats. A 6.10 engine is recommended to power it.

The de Havilland Beaver from MR Aerodesigns comes as a kit or plans. It has a wingspan of 104 in. with a length of 65.5 in. Recommended is a 38 cc engine.  Weight is from 19 to 21 lbs.

The de Havilland Beaver from Easy Build Models comes in a kit. It uses three channel control and an Speed 500 type motor for power.  Wingspan is 57 in.

The VQ Models de Havilland Beaver has a 63 in. wingspan and comes as ARF. You have a choice of power from up to 870 Wt. electric motors, .52 two cycle or .70 four cycle engines. Weight is about 7 lbs.

Slip Stream has a de Havilland Beaver that comes ARF. Its wingspan is 87 in. and length 62 in. It needs a 1.8 engine for power.

Complete-A-Pac (CAP) makes a de Havilland Beaver that comes as a kit that has a six foot wingspan. Balsa and plywood are used in its construction. Power can come from a .40 to .60 four cycle engine.

The AMA Plans Service has plans for a de Havilland Beaver with a 72 in. wingspan for engine power. The plan comes from the Oct. 1989 issue of Model Airplane News. Plan number is 26657.

Flying Styro has a de Havilland Beaver. It has a wingspan of 43 in. and a length of 28 in. Both floats and wheels come with it. Weight is around 1 lb. 4 oz.

Kondor Model Products - KMP has a de Havilland Beaver available with or without floats.  It has a wingspan of 96 in., weight around 16 lbs. ready to fly w/o floats, and uses 1.6 to 1.8 four cycle engines.

Ikon N'wst has a de Havilland Beaver in a kit. Wingspan is 96 in. and weight is around ll lbs. You will need a 1.20 four cycle engine for power.

Air Age Store.com has plans for the de Havilland Beaver. It has a 70 in. wingspan and a 46 in. length. You can use from .40 to .50 2C engines for power.