Vyzkumny a zkusebni letecky ustav a.s. (VZLU)

Flow computations, including CFD (Computational Fluid Dynamics) are employed in many industrial branches.

• Computer Fluid Dynamics For CFD computations there are used both in-house codes and commercial software.

• Flight Mechanics Complete computations of aircraft performance and properties based upon geometric data set by the customer.

• Optimization Multi-criterion optimization of aircraft aerodynamic shapes and other industrial applications.

• Aicraft Design Complete aerodynamic design and optimization of aircraft of various categories.

Despite the massive use of CFD codes wind tunnel measurements remain the essential part of development procedures.

• Low Speed Wind Tunnels LSWT are situated in Prague-Letňany. Here measurements are taken of aircraft, cars, trains, aerials, traffic signs, athletes, simply everything that moves and causes air drag to play a major role.

• High Speed Wind Tunnels Subsonic, transonic, supersonic tunnels located in Prague Palmovka neighbourhood. They are designed for ultrasonic measurements particularly for customers from aviation industry.

• A wind tunnel for turbo machinery purposes Located in Prague – Palmovka neighbourhood, this tunnel is used by customers from power engineering, aeronautics, and other engineering fields up to a flow velocity of Mach 3.5.

• Boundary Layer Wind Tunnel BLWT BLWT in Prague is designed to test wind load of buildings and bridges, pedestrians´ weather comfort simulation, propagation of dust emissions and hazardous stuff in urban agglomerations.

The VZLU´s strength testing shop ranks among largest test facilities in the Czech Republic.

• Strength tests We perform static and fatigue tests of complete structures in whole or in part.

• Landing gear and their parts tests We perform a wide spectrum of tests on landing gears, dampers, wheels, brakes and tyres.

• Modal tests We conduct modal tests on complete assemblies, dynamically similar models, structural parts, including establishing modal parameters.

• Non Destructive Evaluation We provide our customers with services in the field of non-destructive material testing.

• Material Testing and Experimental Stress Analysis Trials are conducted on the loading machines MTS, Instron Schenck, Tira, Inova, Instron, Amsler up to 500 kN.

We offer complex assistance covering design, calculation, and testing of the whole assemblies and their parts.

• Structure analyses and computing FEM calculations and analyses, limit values calculations taking into consideration plasticity, fatigue damage calculation and other analytical methods.

• Aeroelasticity Analyses Aeroelasticity optimization, modal calculation (modes of shape and eigenfrequency), dynamic models tuning into the results of modal experiments and other services.

• Analyses of fractures and materials Fractographical analysis of fracture surfaces and materials´ micro structures.

Mechanical resistance and vibration tests, climatic and corrosion tests, tests on hydraulics and LPG/CNG systems, electric systems tests.

• Mechanical resistance tests Resistance tests of products exposed to linear acceleration, vibrations, shocks, including combined environmental trials.

• Environmental and corrosion tests of products and surface treatment Weather-corrosion tests on products´ design, construction and surface protection.

• Certification tests on LPG and CNG Certification tests on LPG and CNG alternative fuel systems conforming to EHK regulations.

• Tests on electrical systems Certification tests on instruments and equipment for LPG / NCG automobile fuel systems to EHK international regulations.

• Pollution measurement of hydraulic oil, fuel and other working liquids Determination of working liquid´s contamination level including microscopic analysis.

• Chemical analyses We perform spectral analyses and atomic absorption spectrometry to determine chemical composition of materials.

Industrial fans, air propellers for UAVs, development of turbine engines and combustion chambers.

• UAV Propellers VZLU has been working on the design and manufacture of propellers for unmanned air vehicles for years.

• Aicraft propellers VZLU provides comprehensible services in the field of air propellers.

• Industrial fans We provide complex services in the field of developing axial fans and other rotor types from preliminary studies via design and development to testing and ensuring series production.

• Engines – control systems Providing assistance in developing turbines and compressors.

• Combustion Design, development and optimization of combustion chambers, turbine engines and other plants.

Advanced manufacturing technologies for composite parts, development of micro accelerometers to be used in space and friction stir welding (FSW) technology.

• Composite technology VZLU has worked for years on employing advanced composite materials in primary structures.

• Development of accelerometers to be used in space Development of high precision micro accelerometers to measure micro gravitation in space.

• Friction Stir Welding Precision machining, manufacture of composite parts, 3D measurement and other production services.

Highly efficient technologies for joining hard-to-weld materials.

• Prototype and Small Batch Manufacture Precision CNC machining and other production services for prototype and small batch production.

• Composites Many years of experience in using composites in primary structures.

• 3D Measurement On request coming from external users we ensure 3D measurement of prototypes and models on ACCURA measuring equipment.

Providing services in gauge calibration for external users.

• Metrological laboratory Calibration of strain gauge dynamometers in range from 0.1 kN to 500 kN.

• Other calibration activities Calibration of physical and chemical variables with our own standards conforming to ČMI (Czech Metrological Institute).