The introduction of the most modern technologies in production is not only the pursuit of progress, but also ensuring the maximum level of safety in those areas of activity that require it. In particular, this applies to aviation, because if certain elements of the aircraft do not work correctly, this can lead to tragic consequences. That is why the production of all aircraft parts is of particular importance. Here are 5 of the most modern technologies that are used in the production of aircraft landing gear.
1. Shock absorbers
Shock struts play a critical role in the operation of aircraft landing gear and require high production standards, as they are the most stressed parts. Shock struts are essential to ensure maximum ride comfort when driving on the runway, as well as damping impacts that occur upon landing.
To achieve the required level of quality, multi-chamber nitrogen-oil long-stroke shock absorbers are most often used. Additional shock absorbers - stabilizing dampers - are installed on the multi-wheeled chassis of heavy aircraft.
2. Complex high-tech structure
Airplane wheels are a complex structural system, each element of which is archival. They are designed in such a way that they are of the highest quality and can be easily changed after wear.
As a rule, wheel disks are made collapsible, from two halves connected by bolts. To increase the tightness of the wheels, a special adhesive is applied to both halves of the disc and the outer sides of the tire before assembly. On modern high-speed aircraft, the wheels are tubeless and pumped with technical nitrogen - this prevents the landing gear from freezing at altitude. The shape of the tire in cross-section is close to round. All three requirements must be met, because an aircraft tire is a complex high-tech structure that faces tremendous speeds and loads.
3. High pressure
According to aviation standards, an aircraft tire must withstand 4 times the pressure. In addition, they need to cope with colossal static and dynamic loads.
To absorb and distribute these loads, as well as to protect the body from impact damage, two narrow layers are laid between the wheel body and the tread, pressed into thick rubber layers - the so-called belt belts. They help the chassis to cope with high pressures and loads.
4. Tire strength index
Durability is inherent in all things, especially aircraft landing gear. And because of the huge loads, the latter have a relatively short service life. To prevent catastrophic situations, constant monitoring of their technical condition is carried out, such as checking the pressure after landing and before departure. If there are any defects that, in the opinion of mechanics, are critical to the chassis, they are replaced.
5. Test checks
Immediately before being put into service, all chassis must undergo a series of test checks, which will either confirm their suitability or show structural defects. All tests are divided into two large groups: statistical and dynamic.
During statistical tests, the chassis is tested in several laboratory conditions: the strength is measured by pumping water into the tire, and the dimensions are determined by leaving the inflated chassis at room temperature. On the other hand, dynamic checks involve testing under conditions as close as possible to real operation.
Despite high technologies and serious checks, all incidents cannot be prevented: In Zhukovsky, a plane crashed due to birds: what other incidents in aviation occurred due to birds