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Hwurzburg authored Dec 15, 2024
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6 changes: 3 additions & 3 deletions plane/source/docs/quadplane-reliability.rst
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Expand Up @@ -15,11 +15,11 @@ Large commercial QuadPlanes not only represent significant investments, but also
Suggested Parameters (differing from defaults)
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- Although it requires setup per flying location, the use of :ref:`DO_LAND_START<do_land_start>` missions and :ref:`RTL_AUTOLAND<RTL_AUTOLAND>` is advised, to control approach direction.
- Although it requires setup per flying location, the use of :ref:`DO_LAND_START<common-do-land-start>` missions and :ref:`RTL_AUTOLAND<RTL_AUTOLAND>` is advised, to control approach direction.
- Be sure to configure the landing sequence with long enough base and final legs so as to assure the turn offshoots are corrected before the final transition to VTOL on landing. A vehicle moving at 30m/s with 30deg maximum bank angle will only turn at 9 deg/sec resulting a >200meter turn radius. Bear in mind that winds can widen the turn radius significantly.
- Be sure to set the :ref:`TECS_LAND_ARSPD<TECS_LAND_ARSPD>` parameter, it should be set to just above :ref:`AIRSPEED_MIN<AIRSPEED_MIN>`, which should be 25% above stall speed, otherwise the normal cruise airspeed will be used on the approach, greatly increasing the radius of turns and their recovery to the mission path.
- Test the above landing sequence in STIL with the -f quadplane frame, using your parameters for TECS, and pitch/roll angle limits, to assure it can execute the landing pattern correctly.
- Use :ref:`Q_OPTIONS<Q_OPTIONS>`, bit 5 = 1 to assure that RC failsafes while in VTOL modes are treated as QRTLs instead of QLANDs, if not operating on a mission with :ref:`DO_LAND_START<do_land_start>`.
- Use :ref:`Q_OPTIONS<Q_OPTIONS>`, bit 5 = 1 to assure that RC failsafes while in VTOL modes are treated as QRTLs instead of QLANDs, if not operating on a mission with :ref:`DO_LAND_START<common-do-land-start>`.
- Set :ref:`Q_ASSIST_SPEED<Q_ASSIST_SPEED>` to be about 3m/s less than :ref:`AIRSPEED_MIN<AIRSPEED_MIN>`, but still above the vehicles stall speed, to avoid undesired assist operation within the normal operating speed envelope.
- Set the transition failure timer :ref:`Q_TRANS_FAIL<Q_TRANS_FAIL>` to an appropriate time and set :ref:`Q_TRANS_FAIL_ACT<Q_TRANS_FAIL_ACT>` to QRTL, unless operating at BVLOS distances. In this case, it might be better to set the action to warning only and decide what do as the situation warrants.
- When setting up the Battery Failsafe, use :ref:`BATT_FS_LOW_ACT<BATT_FS_LOW_ACT>` = 6 for a fixed wing return, loiter down to :ref:`Q_RTL_ALT<Q_RTL_ALT>`, and QLAND.
- When setting up the Battery Failsafe, use :ref:`BATT_FS_LOW_ACT<BATT_FS_LOW_ACT>` = 6 for a fixed wing return, loiter down to :ref:`Q_RTL_ALT<Q_RTL_ALT>`, and QLAND.

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