Summary of Contents for AeroDesignWorks HORNET-III
- Page 1 -III manual ORNET Firmware v3.0 AeroDesignWorks GmbH Wankelstr. 57 D-50996 Köln Germany 27th April 2022...
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Page 2: Table Of Contents
Contents 1 Introduction Hardware information ........Liability and limited warranty . -
Page 3: Introduction
III firmware source code together with a license to use, modify and redistribute the firmware in 2018. The goal was to be able to make modifications for the BF range of engines. AeroDesignWorks and ProJET continue to work together on the hardware, but starting in 2021, AeroDesignWorks distributes their H... -
Page 4: Liability And Limited Warranty
SECTION 1. 1.2 Liability and limited warranty By using this product, you agree to hold AeroDesignWorks GmbH free from any form of liability for damage or injury, direct or indirect, resulting from using this product. As AeroDesignWorks GmbH cannot supervise the proper installation and operation of the jet engine, the electronic components and the radio controller, the end user is responsible for all of this. -
Page 5: Components And Connecting
HP-Tech BZP21L40 pump. 5. A battery for power supply. All new AeroDesignWorks model jet engines ship with these accessories except for the battery. How these components are connected is shown in Figure 1a. Note that there are two fuel valves for the two fuel lines labeled KEROSENE and IGNITION on the engine. -
Page 6: Fuel System
(fuel pump and valves, connectors, . . . ). If you need to make adjustments or exchange components, some suggestions are: • Use a high quality fuel pump like the ones shipped with the corresponding AeroDesignWorks jet engines. • Use fuel valves of high quality. -
Page 7: Gps Module
SECTION 2. Components and connecting WARNING Carefully monitor the battery voltage, especially during and after the first few flights, as a low battery voltage can be fatal e.g. to maintaining a sufficient fuel flow. Disconnect the battery from the ECU if it is not operated for several days. 2.5 GPS module A GPS module can be connected to the corresponding outlet on the ECU. -
Page 8: Engine Operation Overview
To better leverage the brushless pump’s quicker response and the fact that different pumps of the same model have the same operating behaviour (pump voltage and flow at a specific pressure) up to negligible differences, AeroDesignWorks modified the firmware of the H -III-ClubSport. This new firmware is designated v3.0. -
Page 9: Ornet Ornet
SECTION 3. Engine operation overview Figure 2: Comparison of measurement data: B140F with H -III vs. B140F ClubSport with H ORNET ORNET III-ClubSport. • Pump pressure: This is plotted to visualise how quickly the pump reacts. As the engine has to slow down the acceleration towards maximum RPM to prevent overshoots, we meas- ured the time from the controller signal assuming its maximum value to the engine reaching 98% of the max- imum RPM (note the vertical green lines in Figure 2). -
Page 10: Using The Ground Support Unit (Gsu)
The GSU is a small terminal with an LCD with two lines and 16 characters each and four buttons (up , down , escape and enter ). Figure 3: An AeroDesignWorks GSU. WARNING Do not permanently install the GSU in the aircraft model, as the LCD might have a negative impact on the RC’s range! -
Page 11: Status Screens
SECTION 4. Using the Ground Support Unit (GSU) These messages will be repeated if the GSU is removed and reconnect, or if it is connected after the initial startup procedure. The following messages are printed by startup routines and will not be displayed again if the GSU is reconnected. -
Page 12: Engine Statuses
If the throttle is then set to full position within three seconds, the ECU will initiate the autostart sequence (see Section 5.2.2). Engine ignition using auxiliary gas. Not relevant for AeroDesignWorks engines. PROP IGNIT Burner is on for the engine start using fuel. -
Page 13: Termination Statuses
SECTION 4. Using the Ground Support Unit (GSU) Status Description Waiting for the acceleration to stop (nearing STEADY). WAIT ACC Waiting for the RPM to stabilise (at idle or calibration speed). STEADY The ECU tries to find the correct pump voltage for idle RPM. CAL IDLE The engine accelerates to calibration RPM and waits for the RPM to stabilise. -
Page 14: System And Periphery
SECTION 4. Using the Ground Support Unit (GSU) Status Description No error was encountered during the last run. WITHOUT ERRORS The RC’s throttle pulse failed, possibly bad signal reception or loss. FAILURE THROTTLE PULSE Failure of the RPM sensor, either no signal or errors detected. RPM SENSOR FAILURE The temperature sensor reported implausible values and might be malfunctioning. -
Page 15: Gps And Airspeed Value
SECTION 4. Using the Ground Support Unit (GSU) Menu item Description The full throttle RPM. Can be set lower than the default value, e.g. to limit RPM FULL THR. the resulting thrust and / or fuel consumption. Can be lowered slightly or increased from the default setting, e.g. in extreme RPM IDLE ambient conditions. -
Page 16: Test Functions
SECTION 4. Using the Ground Support Unit (GSU) 3. GPS V, GPS ALT: Current GPS ground speed in and altitude in m. 4. DISTANCE R, X, Y: Travelled ground distance, travelled distance longitudinal, travelled distance latit- udinal. 5. G MAX R, G MAX V: Maximum ground distance from the take off point in m and maximum ground speed 6. -
Page 17: Necessary Settings Before Starting
Therefor, the expert menu is not explicitly documented here. If you feel that you need to change settings that are not accessible through the normal menus, please get in touch with our support at turbines@aerodesignworks.com. 4.6 Necessary settings before starting At the start of each session (i.e. -
Page 18: Engine Operation Details
SECTION 5. Engine operation details 5 Engine operation details 5.1 Radio Control (RC) Only one channel is needed for the RC’s throttle signal. With the throttle channel, the engine can be started, controlled and shut down. The additional channel available (labeled AUX on the housing, see Figure 1a) can be used by connecting an auxiliary input patch cable (1-to-1) and can be configured either for digital trimming or a smoker valve (see Section 5.8). -
Page 19: Autostart
SECTION 5. Engine operation details For these reasons, it is very useful to use a convex combination of these relationships as the throttle curve to avoid the RPM or thrust to react too sensitively to the throttle position at either end of the range. Assuming the throttle position is mapped to 0 1 such that off corresponds to 0 and full corresponds to 1, we get the target relative RPM function as r : 0 1... -
Page 20: Auto Calibration
SECTION 5. Engine operation details 5.4 Auto calibration -III with analogue (brushed) pump needs to perform this step for a sufficiently precise guess of the ORNET pump’s voltage for full RPM for a correct throttle response until the correct voltage is known. The reason for this is that the brushed pump’s characteristic curves are not entirely consistent and may differ between between devices of the same model, or even due to different ambient conditions. -
Page 21: Auxiliary Channel
SECTION 5. Engine operation details 5.8 Auxiliary channel For using an additional smoker valve, it is possible to connect an AUX input patch cable to the H -III. ORNET 5.8.1 Using the auxiliary channel to replace the RC’s trimming The auxiliary channel can be configured to replace the trimming using the GSU menu (see Section 4.5.2), e.g. if the RC uses digital trimming. -
Page 22: Contact And Support
SECTION 8. Contact and support 6 Contact and support If you encounter any problems with one of our products or require support, please contact AeroDesignWorks • telephone: +49 (0) 221 / 98 43 11-50 • email: turbines@aerodesignworks.com 7 Changelog Firmware version 3.0 •... - Page 23 Thank you for your attention! Your team at AeroDesignWorks GmbH Wankelstr. 57 D-50996 Köln Germany Telefon: +49 (0) 221 / 98 43 11-50 Telefax: +49 (0) 221 / 98 43 11-02 https://aerodesignworks.com turbines@aerodesignworks.com...
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