Why in the world the Boeing 767 landing equipment tends forward?

the Boeing 767

He has four wheels for each of Main Landing Equipment sets (MLG). Also known as Bogies, this is the main support for the weight of the plane and is the first point of influence in lands 767. The vehicles are also 767 with a tendency, as one of the axes rises above the other when the plane is in the air. Most of the aircraft with the landing of vehicle equipment is characterized by a tendency. However, what is unique in 767 is the fact that the gear tends forward.

On most commercial aircraft with four or six wheels, the gears tend to be back. Visually, the rear axle is reduced while lifting the front axis. This is the most common composition in aircraft, especially with Boeing. In fact, 767 is the only one Boeing

A plane to have a tendency forward. Why this?

Make everything suitable for a small space

Although the aircraft looks great, aircraft engineers should fit with many elements in a relatively pressing package. Mlgs, for example, usually retreat to the abdomen of the plane, but this space is shared. Globally, the pavilion box is large, structural, and goes between the wings, directly in front of the gear bay. Several aircraft also include central fuel tanks, and emergency exit slices directly behind the gear wells, along with the suspension of goods. To make room for other items, the gear is tilted to take less, and the equipment can be smaller.

Other parts of the plane provide benefit. Fuel tanks are necessary, shipments provide additional revenues for airlines, and the wing box is a structural component. But the gear wells do nothing along with the landing equipment in the store. So the engineers prefer to tilt the mlg vehicles and make the dirty wells smaller.

The result? From the current plane you produce Airbus

Buring is four or six wheels, all except Airbus A350-1000 has a landing equipment. However, Bogie consisting of six A350-1000 wheels is actually slightly larger than Bogie Quad wheel on A350-900, as their wheels are smaller and separated from each other. In addition to the design changes between the two planes, the A350-1000 is required.

Aircraft processing

The tilt of the gears is common on the planes, but a Rear The tendency is more common. The 767 anterior mile is a less popular option, especially among Boeing aircraft. The reason for 767 to have tilt is to fit the gear bay. However, the reason that it tends forward is primarily due to Aircraft processing.

Boeing 767 is famous for a pilot. In fact, similar to the 757 pilots as well, 767 is incredibly strong, and has lighter controls preferred by some pilots, making it fly more like a large sports car instead of a sports car like 757. However, engineers discovered that 767 tend to retreat quickly during the landing.

It may be dangerous for the plane to start suddenly when the pilots land, as this can put excessive pressure on the nose equipment and cause structural damage. In fact, this happened exactly to United 767-300ER in 2023 When the nose equipment was allowed to move to the runway, which wrinkle the fuselage. To help in facing this, engineers had a tilt forward. The front axes that touch first help reduce this movement, although the pilots should be careful to prevent the plane from retreating.

Other benefits of inclined landing equipment

Aircraft include computers that teach computer on board when the plane is on the ground or in the air. For diagonal aircraft, the sensor can discover when the hurry is on the ground. The posterior inclination is also useful specifically for landing. When the background landing equipment touches the Earth first, this results in an effect that reduces the nose with a decrease in the front axis, which makes the landing more smooth in general. This is especially noticeable on Airbus A330

And A340.

Boeing 777-300ER also provides a unique feature that MLG Swies is semi -reserved. Basically, the front axes are raised from the ground when the plane begins to spin, which increases the lifting and reduces the distance of the boot. Other aircraft, including the rest of the 777 family, their equipment remains completely down until the plane completes its rotation. In some way, 777-300er equipment helps lift it in the air.

Tilt Aircraft Gear is a simple solution to help broad vehicles overcome the integrated gear wells, but the engineers have since been invented to add additional features. In addition, Airbus A330 and A340 is known as some of the most landing operations on any plane in the service, while Boeing 777-300ER uses it as aid for take-off. What was the simple solution to an engineering problem is now a group of different design features.

Mile of the aircraft in the past and today

The aircraft had long been present with the four gear vehicles, but the tilt of gears was not initially understood. Boeing 707 nor Douglas DC8 was tilted to Mlgs. Boeing 747 had a complex gear arrangement with four groups of MLG Swies, so the MLGS under the wings has an extreme rear tendency to suit the integrated gear bay. This way, there was space for the central gear groups. However, MCDONNNELLLLS DC-10, Lockheed L1011 Tristar and Airbus A300 did not have a tilt of gears.

Boeing 757 and 767 have a diagonal pivotal, and since then, all newly designed devices include this design. While Boeing has since preferred to tilt the rear landing equipment, Airbus has been used both. Both are the A330 and A340, which were released in the 1990s, are distinguished by the rear landing equipment, while the latest A380 and A350-900 use front tilt. As previously discussed, the A350-1000 equipment is not inclined.

Unique in Boeing 777 and 787 Dreamliner is that the gear changes its tendency. Although both planes are characterized by a rear tendency during flying, the vehicles actually revolve forward to the front when pulling the gear, most likely to the gear design well. When the landing equipment is reduced, the gear is transmitted again to the rear mile.

Difficult landing

Here is the problem with the tilt of the front gear. If you are ever in the Boeing 767, Airbus A350, or A380, you have noticed that the landing could be completely firm. As previously discussed, the posterior tilt tends to soften the landing, which is a particularly clear effect on the A330s and A340s. But when the front hub is first touched, this tends to pull the rear axis down on the ground, putting the full weight of the plane on the ground more quickly.

Since release 767, Boeing has decided to avoid it. As we mentioned before, both 777 and 787 change their MLG tilt angle to be back, allowing the most smooth landing. Giving these aircraft an additional mechanism to this change in the tendency adds the cost and complexity, but for Boeing, it was worth making this plane easier to land smoothly.

For Airbus, they simply decided to allow the equipment to comment on the A380 and A350-900, giving simplicity of priority. This shows the different design priorities between Airbus and Boeing, with companies different from a wide range of features ranging from the airline surface controls to Wingtip devices as well as landing designs.

Thicker

Often the pilots Lad Boeing aircraft to perform them and deal with properties. Although the landing equipment in 767 is not ideal for the production of grease, in this case, it was a conscious option to help the pilots to land on the plane safely. After all, the fixed landing is better than breaking the nose equipment in the ground.

Moreover, oblique landing equipment is now an advantage everywhere on large aircraft. Almost all the aircraft are merged to suit more compact gear wells, allowing engineers more space for other elements. Although Airbus and Boeing differ in their approach to this, these differences help in distinguishing between each plane from each other, which adds more diversity to an increasingly homogeneous sky.