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CZ/EN

Center of Aviation and Space research

LRI-AAST: L1 laboratory: DYNO and CORE test cells

Lab Equipment Application
L1 DYNO – dynamometric test cell for turboprop engines without a propeller system and a reducer A power output of up to 3300 kW allows to monitor and capture not only the vibration characteristics of each part of the aviation engine but also the characteristics of all engine operating parameters (temperature and pressure fields, power, noise, consumption, etc.) for turboprop engine research and testing activities at a stationary site.
CORE test station The core test station is intended for research of processes in the combustion chambers of turboprop engines and their influence on the dynamic characteristics of the engines. CORE is equipped with a fixed test table, a removable cradle, a linear bearing/thrust measurement, an oil cooling system, a transport trolley, an inlet silencer, a secondary inlet, a heating inlet, etc.

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Dynamometric test cell for turboprop engine and the experimental core test cell for turboprop engine laboratory are located in Prague 9 – Letnany. The test cells share supporting infrastructure including conference room, control room, fuel and LPG management, compressors, exhaust management.

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DYNAMOMETRIC TEST CELL

Paratemeters

Dynamometer
Maximum braking power of dynamometer
Froude Hofmann RF47AVGT s/n: FT8042760
3281 kW (4400 BHP)
Maximum revolute speed 3500 min-1
Maximum torque 10 kNm
Control system of dynamometer
Froude Hofmann TEXCEL VX100, s/n: 8042845/1 -
Accessories
Air preheating power for LPG engine by heater 1 MW
Reciprocating compressor with water separator and air tank 11 kW/500 liters
Low frequency data measurement (LF DAQ)
Number of thermoelectric temperature sensors 400 pcs
Number of pressure sensors 304 pcs
Number of pressure sensors for liquids 40
Number of vibration sensors 32 pcs
Number of platinum resistance thermometers 4 pcs
Number of channels for strain gauges 20 pcs
Number of channels for analog signals (voltage / current) 64 pcs
High frequency data measurement  (max. 200 kS/s)
Number of channels for accelerometers 48 pcs
Number of universal channels 72 pcs

Dynamometric test cell for turboprop engine, located in Prague 9 – Letnany,  is a state-of-the-art testing laboratory of aircraft engines with a power output of up to 3300 kW allowing to monitor and capture not only the vibration characteristics of each part of the aviation engine but also the characteristics of all engine operating parameters (temperature and pressure fields, power, consumption, noise, etc.) site for turboprop engine research and testing at a stationary site.

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CORE TEST CELL

Paratemeters

Category Sub-category Unit Reference engine
Engine Core Weight Dry Lbm 445 - 775
Engine Core Weight Wet Lbm 460 - 870
Engine Core  Diameter   inch 15 - 23
Engine Core Length (without  accessories)   inch 50 - 75
Engine Core C.G. Locations – installed accessories   inch 2,56 – 3,61
Engine Core Airflow   Lbm/sec 8,1 – 11,5
Engine Core Speed 100% Core Speed Rotation rpm 20000 - 50000
Exhaust Gas Temperature Core only °F up to 2000
Engine Thrust (nozzle)   lbf 1250 - 1800
Engine Core  mounting Qty of mounts - 3 - 4
Fuel   Consumption Take Off Lb/h 494 - 900
Noise level of engine core Take Off dBA up to 145

The experimental core test cell for turboprop engine laboratory located in Prague 9 - Letňany offers an outstanding facility to research and investigate the processes taking place in the combustion chamber of a turboprop engine and their influence on the dynamic characteristics of engines. The laboratory state-of-the-art HW and SW equipment allows to observe and analyse the vibration characteristics of individual parts of the reduced motor (without the propeller and the speed reducer).

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Photogallery LRI-AAST: L1

Download the information brochure