The facilities are used to performs Ground Vibration Tests of aircraft and resonance tests other objects, the purpose of which is to determine the dynamic properties of the tested structure or its components. In addition, for aircraft, based on the results of Ground Vibration Tests, numerical analyzes of aeroelasticity are carried out to determine the speed and modes of flutter, which is required by aviation regulations.
The facilities may be used to performs vibration tests, acoustic tests and measurements of other quantities and parameters characterizing the work and enabling the diagnosis of the condition of the machine, device, vehicle or aircraft under their operating conditions.
Equipment (all facilities are mobile):
Multi-channel analyzers and recorders (up to 256 channels in total, sampling up to 204kHz),
Polytec PSV 500 3D laser vibrometer (non-contact vibration measurement),
Accelerometers: (mass: 0.3 – 210 grams; frequency range: 0.5 Hz to 40,000 Hz; acceleration range: 0.001 g to 1000 g),
Modal hammers (from 4.8 grams: 222N, up to 5.5 kg: 22 kN),
Electrodynamic exciters (maximum force: 1600 N).
MicrodB HDCamV2 acoustic camera (36 microphones).
G.R.A.S. intensity probe 50AI-L.
G.R.A.S. surface microphone 40LS (thickness 2.5 mm).
1 ”free field microphones PCB 377 B02.
SVAN 912AE portable sound and vibration analyzer.
Scope of services:
Investigations into aeroelastic characteristics of aircraft, including: Ground Vibration Tests (GVT), Determination of the speed and shape of flutter on the basis of the GVT, Calculations of free vibrations and flutter using the finite element method (FEM), Preparation of the flutter test program in flight, Support for flutter tests in flight, Support for the certification of new or modified aircraft.
Vibration Tests, including: Vibration measurements and analysis, Resonance tests of structures – measurement of modal parameters: frequency, generalized mass, damping, mode shapes, Testing of the object’s response to excitation by a force impulse, Testing the object’s response to excitation with a random signal, Object vibration tests on a shaker table, Calculations and verification of vibration properties of the structure.
Acoustic tests, including: Sound source localization, Determination of the sound power level, Sound intensity measurements, Measurements of the sound pressure level.
Operational tests: measurements of operational vibrations of machines, devices and vehicles under their operating conditions. The data acquisition system used for this purpose enables the measurement of vibration acceleration at many points (up to 256 channels), also, with the use of appropriate sensors, measurement and registration of other physical quantities needed to monitor the operation and assess the condition of the tested device. The high sampling frequency of the measurement system (up to 204 kHz) enables the implementation of tests on fast-changing phenomena such as, for example, collisions with the structure of objects fired from a pneumatic cannon, or transient states such as starting or braking the device.
Łukasiewicz Research Network – Institute of Aviation
al. Krakowska 110/114
02-256 Warsaw, Poland
central: (+48) 22 846 00 11
fax: (+48) 22 846 44 32
e-mail: ilot[at]ilot.lukasiewicz.gov.pl
KRS 0000862006, NIP 1070046338, PL 1070046338, Regon: 387193275
Bank PKO SA
90 1240 6247 1111 0000 4977 2760
Directions to the bus stop “Instytut Lotnictwa”
by tram: 7, 9, 15
by bus: 141, 154, 317, N38, N88