Table of Contents
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Table of Contents
Summary of Contents for ProJet Hornet-III
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Page 2: Table Of Contents
LIST OF CONTENTS INTRODU CING EXCLUSION OF LIABILITY AND COMPENSATION CONNECTION DIAGRAMM PROPANE INGNITION/KEROSENE IGNITION KOM P ONEN TS POWERSUPPLY FUELSUPPLY SENSORS ELEK TR CAL CONN E CTI ON STARTER GLOWPLUG VALVES IO-B OARD G RU N D SU P P OR T U N I T (G SU ) FUNKTIONS STATUSDISPLAY 11f. - Page 3 INTRODUCING The HORNET-III is a modern engine control unit for model aircraft turbines to controll and regulate the engine in a safety operation area. Additional all important engine data are observed and the engine is shut down if an error occures, i.e.
- Page 4 CONNECTION DIAGRAMM PROPANE IGNITION...
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Page 5: Powersupply
CONNECTION DIAGRAMM KEROSENE IGNITION COMPONENTS Listed accessories are needed for engine operation: HORNET ECU I/O BOARD (with LED and buzzer) Sensor – amplifier pcb Sensors (rpm and temperature) Fuel pump Power supply battery POWER SUPPLY Al components are supplied by one battery. The capacity should be at least at 2500 mAh. If the ecu is not operated more than a week, the battery must be disconnected. -
Page 6: Fuelsupply
FUEL SUPPLY The whole reliability of the running engine system depends on a perfect fuel supply. Using a high quality fuel pump Using high quality valves Hopper Tank No filter before fuel pump Largest cross-section of the fuel pipeline ELECTRICAL CONNECTION DIAGRAM STARTER To start the engine you can use a fan or an electrical motor. -
Page 7: Valves
VALVES To realize the automatic start you could connect a propane /kerosene valve. Further there is the opportunity to plug in a smoker valve. IO-BOARD: To lengthen the in-and output port and the serial port the io-board could be plugged in between the ECU and GSU. - Page 8 GROUND SUPPORT UNIT (GSU) OPERATION All important settings are transmitted from the GSU to the ECU. The following diagram shows a menu overview. The input is done by four buttons UP( ), DOWN( ), ESC( ) and Enter( ). The GSU can be connected during operation to change or show adjustments. With -button the menu is scrolled up and down or adjustments are in/ decreased.
- Page 9 ATTENTION !The GSU must not be mounted inside the model aircraft, because of electric magnetic disturbances! POWER ON MESSAGES After connecting the GSU to the ECU two messages appear. HORNET-III V1.4a HOMEBUILDER ECU-Version SENSOR: OPTIC IGNIT : KEROSENE...
- Page 10 STATUSDISPLAY With -bottons the different status displays could be showed. STATUSDISPLAY 1 – ENGINE STATE The status display appears with following information : Temperature – RMP x 1000 – Throttle position (%) 26°C ---/--- †0.0V Operation state pump voltage Temperature : current egt : RMP x 1.000 Operation state...
- Page 11 STATE MESSAGES engine off, standby STANDBY standby – waiting for start sequence (throttle stick to 0% and next to 100%) PROP IGNIT Start engine– propane ignition BURNER ON Kerosene ignition– Burner plug on FUELIGNIT Kerosene ignition FUELHEAT Heat – Engine will be heated with constant rmp and pump voltage RAMP DELAY Starter will accelerate slowly without increasing pump voltage RAMP UP...
- Page 12 EMERGENCY Emergency program – engine will be regulated over pump voltage SLOW DOWN Engine turned off – waiting for still stand COOL DOWN Cool down engine with constant starter rpm DEV. DELAY The engine speed could not follow the increasing pump voltage – Acceleration ramp too fast!
- Page 13 STATUSDISPLAY 2 - KEROSENE Status display 2 informs about kerosene consumption and remaining fuel. STATUSDISPLAY 3 - POWERSUPPLY Status display 3 informs about battery state. STATUSDISPLAY 4 – ERROR MESSAGES Status display 4 show last turn off reason. ERROR MESSAGES START-PHASE: RPM <...
- Page 14 ERROR MESSAGES AUTO-CALIBRATION FLAMEOUT DURING CALIBRATION REASON: Temperature felt short of 250 degree during calibration-run. EXPLANATION: Fuel supply interrupted -> User error FELT SHOR T OF MIN. CALIBRATION RPM REASON: Necessary rpm felt short of to ramp up engine EXPLANATION: Disturbance at speed sensor (Light, electrical error), Fuel supply interrupted (Bubbles) -> User error ERROR DURING CALIBRATION REASON: Calibrations rpm could not stabilized...
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Page 15: 1-Setup
EXPLANATION: Disturbance at speedsensor (Light, electrical error,losing contact), Fuel supply interrupted (Bubbles) FAIL TEMPERATURE-SENSOR REASON: Incorrect temperature measurement EXPLANATION: Temperature-sensor broken, Disturbance at sensors(electrical error, losing contact) MAX. TEMP EXCEEDED REASON: Max temperature of 800 degrees was exceeded EXPLANATION: Mechanical problem of engine FLAMEOUT DURING RUN REASON: Temperature felt short of 200 degree during run. -
Page 16: 2-Adjustments
1.8 FUEL-VALVE PULSE After successful ignition, the fuel supply will regulated with the entered value. Engine will exhaust with less values. 1.9 GAS-EXPO Setting of throttle stick – RPM-Curve. 0% = Linear (no EXPO) 100% = max. EXPO. 1.10 TEST GLOWPLUG Glow plug test can be switched on or off during starting phase. -
Page 17: 3-System
2.3 ADJUSTMENT TEMPERATURE Adjustment of the temperature element 2.4 FUEL CONSUMPTION To use the fuel gage the characteristic pump curve is necessary. Set in the fuel-flow at 1 Volt (FUEL-FLOW @1.0V) and 2 Volt (FUEL-FLOW @2.0V) pump voltage. For calculating the remaining fuel set in the size of the fuel tank. - Page 18 9.3 CALIBRATION SPEED This speed will reached for calibration run after starting engine. This speed fix a crossing point between slow /fast acceleration resp. delay(Menu 9.8 – 9.11) 9.4 CALIBRATION RATE Input of pump voltage increasing rate during automatically calibration. If voltage is too high, flaming results and calibration speed could be exceeded (9.3).
- Page 19 9.20 HEATING TIME After fuel ignition the combustion chamber will be heated up for this adjusted time. 9.21 FUEL DELAY After heating the starter will rise up slowly in adjusted time, without increasing pump voltage. (STATUS: RAMP DELAY) 9.22 RAMP-UP TIME Engine will increased to idle rpm in adjusted time.
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Page 20: Autostart
FUNKTIONS & PROGRAM FLOW RUN AUTO-START Fuel ignition BURNER ON –Burner on for 8 seconds FUEL IGNIT – Pushing burner valves– Starting fuel pump FUELHEAT – Heating time (Segue from burner supply to fuel ignition) RAMP DELAY – Slow starter acceleration with constant fuel supply RAMP UP –... -
Page 21: Auto-Calibration
IGNITION – Glow plug on / starter , gas valve open PROP HEAT – Heating with propane FUEL IGNIT – Fuel ignition FUELHEAT – Heatin time(Segue from gas supply to to fuel ignition) RAMP DELAY – Slow starter acceleration with constant fuel supply RAMPUP –... -
Page 22: Radio Control
RADIO CONTROL THROTTLE The throttle controls the engine: Initiation starting sequence Speed / Thrust controlling during flight Shut-off Before starting the engine, the radio control has to be teached in. (see Menu 2-Adjustments). STARTING ENGINE: Triming + throttle to maximum -> STANDBY Throttle to minimum Within 3 secs throttle to full ->... - Page 23 FAIL SAFE Settings Menu 3.4 FAILSAFE DELAY: Time between error impulses and depressing to fail safe rpm (Menu FAILSAFE THRUST). FAILSAFE TIMEOUT: Engine will shut off, if there is no valid impulse recognized or the receiver is already in fail safe modus. FAILSAFE THRUST: When „FAILSAFE DELAY“...
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Page 24: Technical Details
Battery voltage (Menu 3.1) TECHNICAL DETAILS Efficient RISC Microcontroller Easy update by FLASH-MEMORY Modern USB PC-connection Gas-/Fuel Start Operation with only one receiver channel Starting by GSU (Models with more engines) Integrated logger: Dates will be recorded from the last 30 operating minutes. Recording resolution are 5 points per second Telemetry: Data could be transmitted to an local groundstation (Laptop ) Emergency operation: In case of an sensor error (speed/temperature) engine run can safety... - Page 25 ENGINE DATA – SELF SELECTION Fill in here your individual settings. 1-SETTING 1.1 MAX SPEED 1.2 IDLE RPM 1.3 DYNAMIC BEHAVIOUR FAST MIDDLE SLOW 1.4 PUMP VOLTAGE START VOLT 1.5 PUMP VOLTAGE IDLE VOLT 1.6 MAX. PUMP VOLTAGE VOLT 1.7 PULSE GAS-VALVE 1.8 PULSE FUEL 1.9 GAS-EXPO...
- Page 26 9-EXPERTE MASTERMODUS 9.1 MAXIMUM RPM 9.2 MINIMUM RPM 9.3 CALIBRATION RPM 9.4 CALIBRATION RATE VOLT 9.5 MAX. VOLTAGE CALIBRATION VOLT 9.6 MAX. CORRECTION FACTOR X- FACTOR 9.7 MAX. CORRECTION STEP VOLT 9.8 ACCELERATION SLOW SECONDS 9.9 ACCELERATION FAST SECONDS 9.10 DELAY SLOW SECONDS 9.11 DELAY FAST SECONDS...
- Page 27 9.12 ACCEL./DELAY TEMPERATURE °C 9.13 SPEED SENSOR OPTICAL MAGNETCAL 9.14 IGNITION FUEL 9.15 STARTER-V IGNITION VOLT 9.16 STARTER-V HEAT VOLT 9.17 STARTER-V MAXIMUM VOLT 9.18 SPEED STARTER OFF 9.19 STARTER ACCELERATION VOLT 9.20 HEATING TIME SECONDS 9.21 FUEL DELAY SEDONDS 9.22 RAMP-UP TIME SECONDS...