IL Planes 120 Anniversary: a Peek into IL Labs

IL Planes 120 Anniversary: a Peek into IL Labs

The 120th anniversary of the famous Russian airplane creator, Sergey Vladimirovich Ilyushin, was celebrated in the House of Scientists yesterday. Here are some photos of the testing department of “IL” airplanes.

The creation of any aircraft is a long and complicated process. It includes a lot of tests, including tests for structural strength. During static and fatigue tests, the calculated limits and working loads are confirmed experimentally. Tests confirm the accuracy of the design process under the specified load, and the question of the accuracy of the load is answered by using flight strength tests.

 

IL Planes 120 Anniversary: a Peek into IL Labs

There are two independent disciplines of strength calculations. The first is a calculation of strength and the second is a static calculation of the resource.

IL Planes 120 Anniversary: a Peek into IL Labs

The wing, as the most vital part of the aircraft structure, is tested with calculated loads up to 120%. The fuselage has tests on 100% load.

IL Planes 120 Anniversary: a Peek into IL Labs

This IL-76TD (RA-76751) was born in 1988, it was at first used by “Aeroflot” where it logged 2500 flying hours. In 1994 it was decided to make it a testbed for the new PS-90 engines, but the engines were not installed. A special program was developed instead.

IL Planes 120 Anniversary: a Peek into IL Labs

The IL-76 was originally designed for 20,000 flights. However, in order to provide it with such characteristics, it was necessary to pass all the strength tests, and then the endurance tests, and now tests are continuing to determine any extension to the length of service.

IL Planes 120 Anniversary: a Peek into IL Labs

This laboratory is for such tests. The airplane is suspended by strong beams on special hangers, which include hydraulic cylinders capable of putting tens of tons of load on a structural element. Such loads are distributed evenly throughout the structural elements by using additional beams and brackets.

IL Planes 120 Anniversary: a Peek into IL Labs

To determine the longevity of the plane, they take into account an average flight of 3-4 hours and a service life of 20-25 years. These values ​​are used as initial values. Later, to increase longevity, they conduct additional tests that can last for years.

IL Planes 120 Anniversary: a Peek into IL Labs

Usually program flights last for 20 minutes and are performed with a full load on the structural elements of the wing and fuselage. Under the program, they need to perform 20,000 such flights.

IL Planes 120 Anniversary: a Peek into IL Labs

If damage occurs, the test will be stopped, and the damaged part will be repaired. After this, the testing process is resumed. Structural damage of the individual elements is identified in various ways, both visually and with instruments which are able to find even the smallest cracks.

IL Planes 120 Anniversary: a Peek into IL Labs

In order to extended the service life, restrictions are imposed on the operation of the aircraft. For example, they can limit flights due to weather conditions, or convert from passenger flights to cargo transportation. (“You will wear the helmet from that moment” – the picture says)

IL Planes 120 Anniversary: a Peek into IL Labs

This is how the load is simulated. Heavy red ingots are placed in different areas on the floor.

IL Planes 120 Anniversary: a Peek into IL Labs

The navigator’s place.

IL Planes 120 Anniversary: a Peek into IL Labs

The wiring harness for the sensor instrumentation is stretched around the cabin.

IL Planes 120 Anniversary: a Peek into IL Labs

A lot of IL-76s are in operation around the world, so it requires additional research into their service life. Therefore, these types of strength tests on this machine will continue.

IL Planes 120 Anniversary: a Peek into IL Labs

IL Planes 120 Anniversary: a Peek into IL Labs

IL Planes 120 Anniversary: a Peek into IL Labs

IL Planes 120 Anniversary: a Peek into IL Labs

This is another pair of aircraft. A full-sized wooden mockup of an IL-96-300 and an IL-103 5 seater, which has already passed the entire range of tests, and is now also in this department.

IL Planes 120 Anniversary: a Peek into IL Labs

A wooden IL-96 was created mainly for experiments regarding the layout of the cabin.
They say that this model was used in the development of the inside of the president’s IL-96.

 

IL Planes 120 Anniversary: a Peek into IL Labs

Inside the pilot’s cabin everything looks like real.

IL Planes 120 Anniversary: a Peek into IL Labs

Overall view on the laboratory.

IL Planes 120 Anniversary: a Peek into IL Labs

IL-62. The last lifetime S.V. Il’yshin job.

IL Planes 120 Anniversary: a Peek into IL Labs

IL-2 – the most mass produced plane during World War II.

IL Planes 120 Anniversary: a Peek into IL Labs

IL-18.

IL Planes 120 Anniversary: a Peek into IL Labs

IL-18’s cockpit.

IL Planes 120 Anniversary: a Peek into IL Labs

IL Planes 120 Anniversary: a Peek into IL Labs

IL-14.

IL Planes 120 Anniversary: a Peek into IL Labs

IL-86

IL Planes 120 Anniversary: a Peek into IL Labs

IL-80.

IL Planes 120 Anniversary: a Peek into IL Labs

IL-96-300 – from the President’s Squadron

IL Planes 120 Anniversary: a Peek into IL Labs

IL-96 – Cubana – flying in Cuba.

IL Planes 120 Anniversary: a Peek into IL Labs

IL-76

IL Planes 120 Anniversary: a Peek into IL Labs

IL-114.

IL Planes 120 Anniversary: a Peek into IL Labs

IL-38

IL Planes 120 Anniversary: a Peek into IL Labs

IL-103 with MIG-29

IL Planes 120 Anniversary: a Peek into IL Labs

IL-76 “Flying lab”

IL Planes 120 Anniversary: a Peek into IL Labs

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