2025年3月13日 · Let’s dive into the difference between HSI and CDI and how to use them correctly. Key Takeaways. CDI shows course deviation; HSI combines CDI with a heading indicator. On an HSI, the CDI is the center of the needle; the course needle sets the course. HSI reduces workload by providing more navigation info in one display.

A standalone CDI (Course Deviation Indicator) is an instrument that shows your deviation from a VOR radial that is selected using the OBS (Omnibearing Selector) knob located on the instrument itself. An HSI (Horizontal Situation Indicator) is an entirely separate instrument that combines a CDI and a heading indicator.

Horizontal Situation Indicator (HSI): Is a CDI and Heading Indicator packed into one unit. it provides both left right deviation along with glide slope information as well as heading indication in turns. Many HSI's are coupled to auto pilots and may allow course selection via a heading knob if they are connected to do so.

hsi很简单，偏离杆在左就向左飞，杆在右向右飞，同向追杆即可；cdi则要结合航向判断，例如仪表大纲图中a飞机可以跟杆向右转飞到预选r30，但b如果跟cdi的杆往左飞就越追越远了：

A course deviation indicator (CDI) [1] is an avionics instrument used in aircraft navigation to determine an aircraft's lateral position in relation to a course to or from a radio navigation beacon. If the location of the aircraft is to the left of this course, the …

2019年7月12日 · I have flown a CDI for many years and feel quite comfortable reading and using one. The only exposure I have ever had to an HSI is on the private and instrument written tests and it didn’t seem very intuitive to me. Maybe flying one would be easier than figuring out the FAA’s questions about them.

2024年10月4日 · A Horizontal Situation Indicator (HSI) is a more advanced navigation instrument that combines a heading indicator with a course deviation indicator (CDI) to give you a complete picture of the aircraft's position relative to a selected navigation course. The HSI takes in several navigation inputs and combines heading with course guidance.

HSI is the acronym for Horizontal Situation Indicator. Sometimes it is also called Pictorial Navigation Indicator. It combines a standard Directional Gyro and Course Deviation Indicator (CDI) into one single instrument and reduces the pilots workload by displaying the aircraft's heading and position relative to a desired course in a compact manner.

2024年9月1日 · The Horizontal Situation Indicator is a more advanced navigational instrument that combines the functions of a heading indicator with a course deviation indicator (CDI), providing a comprehensive view of the aircraft’s position relative to a selected navigation course.

HSI & RMI Tips Set the HSI to your primary nav source (the course you’re trying to maintain) Set the RMI to the cross-radial nav source(s) Alternatively, set one bearing pointer to the station when flying a DME arc so you don’t overshoot the lead-in/out radials. In 07B, the HSI and CDI always show the same nav source.