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uAvionix AV-20 Pilot's Manual

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AV-20-E
Pilot's Guide
UAV-1004049-001
1
Rev A

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Summary of Contents for uAvionix AV-20

  • Page 1 AV-20-E Pilot’s Guide UAV-1004049-001 Rev A...

  • Page 2: Legal Notices

    Warnings / Disclaimers uAvionix is not liable for damages arising from the use or misuse of this product. This equipment is classified by the United States Department of Commerce's Bureau of Industry and Security (BIS) as Export Control Classification Number (ECCN) 7A994.

  • Page 3: Table Of Contents

    Document Revisions Revision Date Description of Change 6/28/2024 Initial Release Table of Contents Legal Notices ............................. 2 Warnings / Disclaimers ........................2 1. System Description ........................5 2. Unit Functionality .......................... 6 2.1. BeaconX Transponder Control (Optional) ................. 6 2.2. Angle of Attack ........................
  • Page 4 6.5. Attitude Page ........................22 6.6. BeaconX Transponder Control ..................22 6.7. Setup Pages ........................24 Setup – Top Level Menu ..................... 24 6.7.1. Setup – System Info ......................25 6.7.2. 6.7.3. Setup - Page Enable ......................25 Setup – Audio Alerts ......................26 6.7.4.

  • Page 5: System Description

    1. System Description The uAvionix AV-20-E Multi-Function Display provides a wide array of supplemental flight information. Features Include: ● BeaconX transponder control ● AoA Display (Voice Alerting & Peaks) ● G-Meter Display (Voice Alerting & Peaks) ● Attitude (Roll / Pitch) ●...

  • Page 6: Unit Functionality

    2. Unit Functionality 2.1. BeaconX Transponder Control (Optional) The AV-20-E has the option of being the control interface for select uAvionix transponders (including the BeaconX family). This provides pressure altitude, mode, squawk code and IDENT information to the transponder, and displays status and annunciations from the transponder.

  • Page 7: Attitude & Slip/Skid

    Resolution of the timers is 1 second. Timer values are saved even if the AV-20-E is powered off. 2.9. Engine Run Timer...

  • Page 8: Flight Timer

    The flight timer initiates counting based on airspeed above 40 kts and can be reset by the pilot. The timer will stop counting when the speed is below the threshold. The flight timer is reset when the AV-20-E is powered off. 2.11.

  • Page 9: Model Functionality

    The unit model and associated part number is shown on the splash screen on power-up. 2.14. Demo Mode The AV-20-E can be placed in Demo Mode to simulate sensor inputs and demonstrate functionality on the ground. To enable or disable Demo Mode, see Section 5.7. UAV-1004049-001 Rev A...

  • Page 10: Operating Limits

    3. Operating Limits The AV-20-E is supplemental and may not be used as a substitution for a certificated aircraft system. Except where otherwise recognized, no operational credit may be taken for installation of this equipment. The following operational limitations are applicable:...

  • Page 11: Power-On Stabilization

    4. Power-On Stabilization The AV-20-E model incorporates air data and inertial sensors that are temperature- sensitive. These sensors are thermally stabilized by an internal heater. During power-on, the heater warms the sensors to the operating temperature; thus, they require a few moments to stabilize.

  • Page 12: View Button

    If no text appears in this area, no action is assigned to the ●BOTH● command for this page. 5.5. Splash Screen The system splash screen is displayed on power-up. The unit model (AV-20-E or AV- 20-S) is shown, along with the software version number. The unit also displays the splash screen momentarily on power-down.

  • Page 13: Demo Mode

    The AV-20-E can be placed in Demo Mode to simulate sensor inputs and demonstrate functionality on the ground. The AV-20-E should not be used for flight when in Demo Mode. Actual sensor data is not displayed, including attitude, AoA and G load.
  • Page 14 UAV-1004049-001 Rev A...

  • Page 15: Main

    6. Main Pages 6.1. Clock Combo Page The Clock Combo Page displays multiple items of information as shown below. The VIEW button sequences through available data in the upper field. Note that the screen layout and available data will vary based on model and connected sensors. Density altitude, true airspeed and AoA are not available until after power-on stabilization completes.

  • Page 16: Fe Time - Flight And Engine Time Page

    6.2. FE Time – Flight and Engine Time Page The FE Time page displays (F)light Time and (E)ngine Run Time. These timers are automatically started and stopped based on measured data. The Flight Time counter runs when the airspeed speed goes above 40 Kts. The Engine Run Time counter runs when the bus voltage goes above the basic battery float level (alternator is running).

  • Page 17: User Timer

    6.3. User Timer Pages Two identical user timers are available. Each operates independently of the other and each can be configured for counting up from zero or counting down from a user-set value. 6.3.1. Count-Up Mode In the power-on default state, each timer is a count-up timer. The timer is started by pressing the VIEW button with the adjacent start icon .
  • Page 18 Once the set value is accepted, this value is loaded into both the upper (active) and lower (Set Value) fields on the timer page. The lower Set Value allows the same timer value to be reloaded without having to manually set the value again. When the timer is stopped, holding the VIEW button will reload the previously set count-down time.

  • Page 19: Mode Transition

    6.3.3. Mode Transition Once in the count-down mode, the timer can be changed back to a count-up timer by setting a value of zero. This can be done manually, or a shortcut can be used by entering the set mode and holding either of the left buttons down momentarily.

  • Page 20: Large G-Meter Display Mode

    During power-on stabilization, the cyan lower bar will blink, indicating that no valid AoA can be determined. This applies to all color-coded AoA indications provided on different pages. Alerts will be generated just prior to the AoA reaching the upper calibration point. This display can be configured to automatically pop up when the AoA limit alert occurs.

  • Page 21: Dual Graph Mode

    A large textual version is also available showing the current G load: 6.4.3. Dual Graph Mode The dual graph mode is primarily utilized for determining the best upper and lower AoA calibration points and can be helpful for fine-tuning those thresholds. The left side of the display shows the current G load, along with the peaks experienced during the current flight.

  • Page 22: Attitude Page

    To utilize the dual graph mode as an aid for determining pre-stall calibration, the peaks can be cleared while slowing and approaching the pre-stall condition. For more information, reference Section 6.7.8. 6.5. Attitude Page The Attitude Page provides a small thumbnail presentation of roll and pitch, with a slip/skid and AoA overlay option.
  • Page 23 In the PAGE ENABLE sub menu of SETUP, activate the XPDR CTRL page by pressing ENA. A green check mark indicates enabled and a red X indicates disabled. Exit the PAGE ENABLE menu by pressing ●BOTH● the exit the setup menu by pressing ●BOTH●.

  • Page 24: Setup

    Quick Squawk 1200 (or the default squawk code saved in the tailBeaconX) • Press and hold the top button If the AV-20-E is not communicating successfully with the tailBeaconX, a red 'X’ will cover the screen and TMOUT will appear at the top of the page. 6.7. Setup Pages The Setup Pages allow an assortment of options to be configured by the pilot.

  • Page 25: Setup - System Info

    6.7.2. Setup – System Info System information can be viewed via the setup menu. 6.7.3. Setup - Page Enable The Page Enable allows each function / page of the unit to be individually enabled or disabled. When disabled, the function / page will not be shown, reducing the time required to navigate to any specific page.

  • Page 26: Setup - Audio Alerts

    6.7.4. Setup – Audio Alerts Audio alerts can be individually enabled or disabled. When disabled, the visual alert will still appear, but no aural alert will be generated. (See Alerts section of this document for more details on the alerting feature.) 6.7.5.

  • Page 27: Setup - Oat Trim

    6.7.6. Setup – OAT Trim The OAT sensor can be trimmed to account for variations in probe characteristics or to match other equipped gauges. The NEW value shows the currently measured OAT with the offset applied. 6.7.7. Setup – Miscellaneous Options The Misc Options menu allows for miscellaneous options to be set as follows: Blue Background on all pages (versus a black background) Temperature units set to C (versus units in F)

  • Page 28: Setup - Aoa Limits

    6.7.8. Setup – AoA Limits Angle of Attack (AoA) is estimated by comparing the aircraft pitch to the aircraft flight path angle through the air. The pitch is determined by the internal AHRS and flight path angle is determined by air-data based airspeed versus vertical speed measurements.
  • Page 29 • The upper limit (pre-stall angle) is configured to coincide with the onset of the aircraft’s existing stall warning system and is typically on the order of 10 to 15 degrees. This limit is set with the aircraft in its “base-to-final” configuration with flaps and gear set to their normal positions for this maneuver.
  • Page 30 • Select the Clock Combo Page (see Section 6.1) • Select a safe altitude suitable for stalls, minimum 1,500 feet AGL • Aircraft in “base-to-final” configuration, for example o Airspeed V or less o Flaps 20° o Power as required o Stable flight conditions •...
  • Page 31 6.7.8.3. Flap Setting Observations When the upper AoA limit is configured for the “base-to-final” flap setting, and the lower AoA limit is configured for the normal “cruise” flap configuration, the indicated AoA will vary from this baseline when flaps are configured for other phases of flight.

  • Page 32: Setup - G Limits

    6.7.9. Setup – G Limits G limits allow the desired G limits to be configured. Normal flight is 1G, not 0G. 6.7.10. Setup – Hard Calibration Hard Calibration performs an internal recalibration of the inertial gyros and may be required from time to time. The Hard Calibration function re-zeros the internal inertial sensors and may be required from time to time.

  • Page 33: Setup - Beaconx Ground Test Mode

    6.7.11. Setup – BeaconX Ground Test Mode The AV-20-E can command the BeaconX transponder to reply to interrogations while on the ground for ramp testing. Go to the SETUP page and scroll down to BEACONX. Press SEL to enter the Ground Test Mode menu tailBeaconX will now respond to All-Calls on transponder test sets.

  • Page 34: Audio And Visual Alerts

    7. Audio and Visual Alerts Audio and visual alerts are generated under various limit conditions. A visual alert appears as a colored annunciator that is displayed in the upper left corner of the screen, regardless of the unit’s mode or currently displayed page. Aural alerts are implemented via the audio output and require that the unit be interfaced to the aircraft audio panel.

  • Page 35: Clearing Alerts

    7.2. Clearing Alerts When an alert condition is present, pressing the VIEW button will clear the visual alert and mute the associated audio. If there are multiple alerts occurring simultaneously, clearing one alert will then allow the lower-priority alert to be displayed. The audio section of the unit is not powered by the internal battery;...

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