学Ka50的时候碰到个搞不太懂的名词。。Desired Track Angle到底是啥意思呢

LJQC

自己按照领航学相关知识写了个HSI说明：http://bbs.3gofly.com/thread-210245-1-1.html

然后还是没搞懂Desired Track Angle它到底想表示啥。。我看ED手册里到处都有Desired Track Angle，就是没有详细解释的说～

Regulus

相对DH来说，DTA表示了要按照航线来飞的话，飞机的航向应该是多少。

LJQC

Regulus 发表于 2014-6-27 15:08
相对DH来说，DTA表示了要按照航线来飞的话，飞机的航向应该是多少。

后来飞了好多圈，发现差不多跟美机HSI的NAV模式一样用法。。


这问题官网以前有人问过，回答是这样的：

The white arrow on the HSI is the desired track angle (DTA) pointer and displays the desired track angle along waypoints in a route (it only points at a waypoint when you are on the track and the steerpoint is also the waypoint.) I say steerpoint and waypoint since they are different. The angle is defined as the course from the previous waypoint to the current one. Since there is no waypoint previous to waypoint 1 the track angle for that leg is not defined and the DTA needle assumes a default position when waypoint 1 is selected.

所以我之前问的选好Waypoint 1之后怎么DTA pointer乱指，问题就在这儿。。Cheers～