Honda HA-420 HondaJet

HA-420 HondaJet - a twin-engine jet aircraft Business Class.

In December 2003 Japanese automobile company Honda has presented its first aircraft HA420 Honda Jet (first flight - 03 December 2003), which is intended for the serial production and sales. It is the first aircraft in Japan as a whole (including engines) manufactured by the same company without any government support.

Honda developed the HF118 bypass turbojet engine for the aircraft and tested it for a year, installing it on the left pylon of the CitationJet aircraft. Engines on the Honda Jet are mounted on pylons OVER the wing, like the German VFW614. This arrangement makes it possible to reduce the noise level that is directed downward (noise on the ground, especially during landing and takeoff).

HA-420 HondaJet interior photo

Besides, it is much better to wrap the upper part of the wing, and less likely to suck the runway foreign object into the air intake. But the complicated structure of the air flow, because it took extensive experiments using a wind tunnel. Stability of the motors for this arrangement tested for angles of attack up to 26. Fuel is saved in two integral fuel tank in the wing, rear fuselage tank and the supply tank. Centrally controlled refueling.

A special laminar wing profile SHM1 was designed. The wing section with this profile was tested on the T33 flying laboratory. To do this, directly on the T33 casing with the help of polyurethane foam formed the necessary profile and sheathed it with fiberglass. Under the new skin, the 119 pressure sensors were mounted. The transition to turbulent flow from the laminar flow is fixed by an infrared camera, which is installed on the Т33 cabin (the air in the turbulent flow warms up a little).

HA-420 HondaJet cockpit

Flaps are installed at 30 percent of the wingspan, which deflect 15,7 degrees during takeoff and 50 degrees during landing. The plumage and wing are aluminum. T-shaped plumage. The fuselage is made of carbon composite materials with reinforcing aluminum elements, the nose is smoothed for laminar flow. The company claims that the end result is a 10 percent reduction in fuselage drag compared to conventional fuselages of the same size. The length of the cab is 4,6 m, the height is only 1,5 m. A pressurized cabin, at an altitude of 13 km, maintains a pressure that corresponds to a pressure of 2,4 km above sea level (standard atmosphere, maximum boost - 0,61 atm). At the front end of the wing, the anti-icing system is powered by warm air from the engines. The cockpit windows are electrically heated.

But there is no data on protection of plumage and air inlets from icing. Three-column chassis, hydraulically retracted. At the bow stand the remote control system, which deviates to the right and left by 50 degrees when steered and at 10 degrees during takeoff. The fuselage and wing in static tests were loaded only up to 80 percent of design loads, and the behavior at 100 percent of the loads was modeled with computers. As a result, the glider, which passed the static tests, was used to build an airplane prototype. Only plumage is tested under full load. Honda plans to sell in the US Hondajet as a reactive low-cost, light business-class aircraft.

Construction of the plant for the production of airplanes Honda completed in the early 2011. A first aircraft customers received 2012 year. Cost HondaJet about 4,5 million. Dollars.