From 0f7f5d926d25b6f7802ac611c36cab9211f18039 Mon Sep 17 00:00:00 2001 From: Henry Wurzburg Date: Thu, 9 May 2024 15:10:17 -0500 Subject: [PATCH] 4.6:add TECS option for speed increase in descents --- plane/source/docs/automatic-landing.rst | 2 ++ 1 file changed, 2 insertions(+) diff --git a/plane/source/docs/automatic-landing.rst b/plane/source/docs/automatic-landing.rst index 818497d14d..90376c4931 100644 --- a/plane/source/docs/automatic-landing.rst +++ b/plane/source/docs/automatic-landing.rst @@ -50,6 +50,8 @@ The above shows a planned approach with the pre-approach waypoint 440m away from .. note:: You can use QGroundControl to automatically setup your approach and landing waypoints, but it will use a slightly different approach. Using the "LAND" button on the Plan screen, QGroundControl will add a "LOITER_TO_ALT" waypoint (NAV_LOITER_TO_ALT) at a distance determined by its wizard's glide slope parameter to bring the vehicle down (or up) to approach altitude, add a DO_LAND_START (See :ref:`aborting-autolanding`) marker, and a NAV_LAND. +.. note:: Very low drag vehicles will normally require a much shallower approach angle (glide slope) since they cannot lose altitude quickly while maintaining :ref:`AIRSPEED_CRUISE` (for vehicles with airspeed sensors) during the glide slope. Often a much steeper approach is required to clear obstacles. In those cases, there is an option (:ref:`TECS_OPTIONS` bit 1) that when set allows the speed in descents to exceed :ref:`AIRSPEED_CRUISE` up to :ref:`AIRSPEED_MAX` in order to get up the the :ref:`TECS_SINK_MAX` descent rate,if required. This would apply not only to autolandings but any TECS speed controlled flight stage. + .. _automatic-landing_key_parameters: The key parameters that control automatic landing are: