VAL Avionics NAV 2000 Przewodnik Instalacji Pobierz pdf (Strona 101)

SV-ADAHRS-200/201 Installation and Configuration

SkyView System Installation Guide - Revision R 5-11

When a pitot or static test is performed the ADAHRS is being exposed to dynamics that are

impossible to achieve in a real aircraft flight environment, namely, large airspeed changes

without the accompanying accelerations and rotations. This false condition will cause a well-

calibrated unit to incorrectly adjust its calibration. Furthermore, when a unit is in a test

situation a change in applied pitot or static pressure will cause the attitude to pitch up or down.

This is expected.

Performing the following Dynon-prescribed pitot and static test procedure to a Dynon ADAHRS

will prevent problems with the unit’s performance in flight.

Pitot/Static Test Instructions

Basic Principles

 Ensure SkyView is warmed up during each test reading.

 SkyView should be powered off when changing pressures.

 Keep aircraft still (do not move) when pressure is applied.

Steps

1. The aircraft itself should be temperature stable. For example, if the aircraft is moved

from outside in the sun to a hangar for testing, tests should not be started until the

airplane has stabilized at the hangar temperature.

2. Turn SkyView on and let it warm up until the altitude reading is stabilized. This period

should be at least 5 minutes, but may take longer depending on environmental

conditions.

3. Turn SkyView off.

4. While SkyView is off, apply the pressure required by your test to pitot and/or static port

via your test equipment.

5. Turn on SkyView (external or internal battery power is acceptable). Keep aircraft still

while SkyView is powered on. Do not adjust the pitot or static pressures being applied to

the ADAHRS while it is powered on.

6. Verify airspeed and/or altitude reading.

7. Turn SkyView off (using button 1 is a good option for this operation).

8. Repeat steps 4-7 for each required pressure point in the test.

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VAL Avionics NAV 2000 Przewodnik Instalacji Strona 101