Services and products > Aircraft construction: Services

AVIATION BUILDING: SERVICES

The work of strength specialists is extremely important at all stages of aircraft design, production and operation and is aimed at ensuring the strength and reliability of structures.

The company's engineers perform:

analysis of the static strength of the airframe structure under the influence of calculated loads that are at least 1.5 times higher than the maximum possible operational values;
analysis of fatigue strength under conditions of multiple repetition of loads, which makes it possible to determine the number of take-off-flight-landing cycles of the aircraft before the initiation of a crack and, if necessary, recommend changes in the design to ensure a given resource;
analysis of damage and fatigue strength — to ensure the necessary operational durability of the structure.

The airframe is the basis, the "skeleton" of such elements of the airframe as the fuselage, wing, wings and engine pylon. It contains a power set of beams, rods and various profiles. Such structures have high strength and minimal weight. Together with the cladding, the frame forms a single structural and strength scheme capable of accepting all active loads.

When designing the frame, the designer combines the recommendations received from strength experts and technologists regarding the selection of materials, optimization of the parameters of parts, their configuration and layout. As a result, we get a strong structure resistant to various loads. To create it, optimal modes of manufacturing and assembly of components are used, ensuring reliable protection of the product against corrosion and unification of the materials used.

Conventionally, several main functional systems of the aircraft can be distinguished: energy, life support, protection in special conditions, aircraft control, and pilotage and navigation. Some systems, for example, hydraulic, electrical and others, have many consumers and are extremely extensive (this can be seen in the image).

The task of the designer is to design an efficient, maximally reliable system with the minimum possible weight and simple layout.

The reliability and survivability of the system depends on the perfection of the design, management, control and additional circuits of duplicating the work of its components. In addition, for the purpose of safety, the performance of all basic functions is repeatedly backed up by various on-board systems, independent of each other.

The order for designing the interior of the cabin received by the company from the aircraft manufacturer, as a rule, already takes into account the wishes of its final buyer. The configuration and equipment of the cabin is determined by many factors, in particular, the type of aircraft, the duration of the flight, as well as the level of service provided by the airline.

Based on the received order and in accordance with aviation regulations, the company designs all wall-forming surfaces, which, in fact, create the space of the passenger cabin. Such surfaces primarily include luggage shelves, facing (top and side) and window panels, partitions between cabins. In addition, the project provides for the creation of fasteners and installation of all interior elements, including components supplied by the customer.

Technological engineers develop a technological process for all stages of aircraft production on the basis of design documentation. In this work, technologists necessarily take into account the latest methods of processing parts and assembly, available means of automating production operations and new materials that have found application in modern aircraft construction.

After that, special devices for the production of parts and assembly work are designed - technological equipment. For example, it cannot be done without it, if the part must be placed at an angle to the tool during processing.

To support production for any of the phases of the technological process (including the final assembly of the aircraft), the company's technologists, if necessary, travel to the customer's enterprise.

FULL LIST OF SERVICES

Structural strength analysis

Analysis of output loads.
Static calculations.
Providing recommendations for structural design.
Creation of finite element models.
Calculation of the detailed strength of aircraft structural elements, including composite materials.
Fatiguing calculations.
Calculations for survivability.
Preparation of strength tests.
Design of samples for static tests of airframe structural elements and development of test programs.
Design of samples for resource tests of airframe design elements and development of test programs.
Weight optimization of the structure at all stages of design, as well as after conducting static, resource and flight tests.
Certification calculations.
Strength analysis at the request of aircraft operators.

Design of structural elements

Aircraft frame:
- fuselage,
- wing,
- plumage,
- engine pylons.

Aircraft systems:
- aircraft control,
- air conditioning,
- automatic pressure regulation,
- oxygen
- electric,
- hydraulic,
- fuel,
- drainage and inflation of fuel tanks.

Interiors:
- heat and sound insulation elements,
- facing panels,
- luggage racks,
- partitions and dividers between cabins,
- installation of all interior elements of the salon, including equipment and systems of service areas, kitchen and toilet modules.

Technological support of production

Development of technological processes of manufacturing and assembly of assemblies and units.
Development of technological processes of the final assembly of the aircraft, support of assembly works at the customer's enterprises.
Tool and tool design.
Optimization of technological processes.

Preparation of operational documentation

Manuals for technical operation (AMM).
FIM Guidelines.
Airframe Repair Manual (SRM).
Manuals for technical operation of component products (CMM).