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Howto:Carrier Landing Assistant in HUD: Difference between revisions
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Howto:Carrier Landing Assistant in HUD (view source)
Revision as of 20:22, 30 December 2015
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* The heading needle is really only there to get within the last few hundred metres as it points towards the centre of the carrier model rather than the arrester cables. | * The heading needle is really only there to get within the last few hundred metres as it points towards the centre of the carrier model rather than the arrester cables. | ||
* It is based on an offset angle of 8 degrees for the landing deck from the ship's heading and a 3 degree glideslope. These may need to be changed. | * It is based on an offset angle of 8 degrees for the landing deck from the ship's heading and a 3 degree glideslope. These may need to be changed. | ||
== Interpreting the Display == | |||
[[File:CLA-display.jpg|For Howto:Carrier_Landing_Assistant_in_HUD wiki]] | |||
[1] is the bearing to the carrier (226) and so, with the current heading of 249, it is off to the left. Within about +/- 30 degrees of the aircraft centreline the carrier symbol will show up at the top of the HUD (see [6]). | |||
[2] is the heading of the landing deck, which in this case is defined as 8 degrees to the left of the carrier's heading. | |||
[3] is the down angle to the carrier. The "''needle''" is set to align with "''Centre''" at 3 degrees. | |||
[4] is the offset angle between [1] and [2]. The "''needle''" is set to align with "''Centre''" when they are equal. The idea is to give a steer to get on the approach centreline to the landing deck. | |||
[5] is the difference in headings between that of the aircraft and the landing deck. This angle is also shown graphically in [6]. It indicates how much of a turn is required once the centreline of [4] is acheived. | |||
[6] is a graphical representation of the carrier location and orientation. In this example it is off to the left and the landing deck is even further to the left. This would imply a gentle sweep to the left is required for the approach. | |||
Ideally (with a stationary carrier and no wind) the perfect approach would be where Heading == BrgTo == DeckHg (so RelHdg == 0). But with the carrier moving away and a wind it will be unlikely to be that simple. | |||
== The Canvas graphics elements == | == The Canvas graphics elements == | ||