Filton Low Speed Wind Tunnel
Lecture Overview Why do we need low speed wind tunnel testing Wind tunnel technology Instrumentation overview Expected daily tasks Individual projects Conclusions Questions and answers
Why Low Speed Wind Tunnel Testing is Needed Take of and landing Refuelling of aircraft in the air Testing ground effects
Wind Tunnel technology 2
Wind Tunnel technology 3
Wind Tunnel technology 4
Details Date built 1955 MAX.SPEED 97 m/s, 318 f/s, 218 m.p.h, 188 knots. (0.28 MACH No.) (EMPTY TUNNEL) 6 - components, electro-mechanical, virtual centre under floor Balance Fluorescent, Ultra Violet and Photo-floods Used for tests on Concorde
Wind Tunnel Instrumentation Analogue to digital conversion o Tail plain pressures o Wing pressures o Fuselage pressures o Modal Temperature o Incidence o Vibration Control and automation o Pitch o Yaw o Needle valve control for HP air engine simulation
Wind Tunnel Instrumentation Hardware used o NI instrument DAQ modules o NI PXI Software o PIC Microcontroller o PSI8000 System o GE Druck pressure sensors o Custom Built LOLA Actuator Software o Lab view o MP Lab IDE o C Compiler o C++ For tunnel specific applications
Wind tunnel Responsibilities Report writing for every wind tunnel modal o Modal Instrumentation Report o Facility Instrumentation Report o Operations Report Wind tunnel electrical stock control Wind tunnel instrumentation support Modal configuration support Support from Co workers o Good team spirit o Every one willing to help o Manufacturing team a little hard sometimes
Individual Projects 1 Remote DVD Controller o PIC Microcontroller o RS232 communications o IR Interface o PWM Output o PCB component design and manufacturer Modal position DAQ o PIC microcontroller o TCP/IP communication protocol o RS232 capability o 24 bit ADC implementation
Individual Projects 2 Remote control for DC Motor o Analogue circuit principles o Unipolar switching circuit for two directions o Limit and safety circuit implementation HP Air (Torbar) DAQ o PIC Microcontroller o 64 bit ADC via SPI o RS232 protocol o TCP/IP Protocol o Time crucial code expectation o Used to test IPEKA Counter rotating prop blades for aircraft
Biggest Success DAQ Instrumentation for use with real live projects Worst Mistake Destruction of actuator costing around £10,000
Most usefull module Digital Signal Processing-2 nd year Embedded systems -2 nd year Analogue circuit principles -1 st year Least useful module Group project management
Conclusions Valuable experience in the work place Practical experience to enhance the subjects learnt at UWE Real sense of being part of a team Real team work experience Pressure to meet deadlines Gave me a real interest in Engineering as a whole Return job possibilities
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