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Mi-24P autopilot and weapons guides, + Aerodynamics


AeriaGloria

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The autopilot part helped me alot 👍.

Although the largest part was it helping me realize something was wrong. Like the "control helper" having been reactivated since I last played. 😅

 

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1 hour ago, Rover said:

The autopilot part helped me alot 👍.

Although the largest part was it helping me realize something was wrong. Like the "control helper" having been reactivated since I last played. 😅

 

Oh damn. Maybe I should add a disclaimer about making sure control helper is off? 

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On 3/8/2023 at 11:55 AM, aaronwhite said:

Just wanted to add my thanks! I'd take this all as gospel just seeing how frequently I saw you motoring around on Rotorheads in the Mi-24! 😄 

Glad to help. I love answering questions and helping. 
 

I just finished the hopefully FINAL version, 6.0. It includes the new special options settings, so if you want to learn more about “PEDALS AUTO MOVE” or another special option is should all be there for the autopilot and flight controls. First post is updated with 6.0 on Google drive

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@AeriaGloria Hello, I cannot download your weapons guide. The google drive link in the first post leads me to a message saying the file is in the recycle bin. Autopilot guide downloads without any issue. Would it be please possible to check the accessibility of weapons guide file? Thank you.

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13 hours ago, kikimora said:

@AeriaGloria Hello, I cannot download your weapons guide. The google drive link in the first post leads me to a message saying the file is in the recycle bin. Autopilot guide downloads without any issue. Would it be please possible to check the accessibility of weapons guide file? Thank you.

It is fixed, thank you for letting me know. There have been many changes lately. https://drive.google.com/file/d/1Dm9sjbkrQebwGf3FlnFha_vSj8XBLY6g/view?usp=drivesdk


Edited by AeriaGloria
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  • 3 months later...

Thx for this guide, I was looking something about bombs :).

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Updated AP guide with control laws/gear ratios of autopilot at the end. This way you exactly know what autopilot will do and when in precise amounts.
 

I got these from translating the avionics maintenance manual, the AP performance in attitude hold/dampening/compensation can be adjusted by maintenance, but usually kept near these values with a 20% margin of error or so. 

 

IMG_1648.jpeg

IMG_1649.jpeg


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  • 1 month later...

@AeriaGloria Thank you for your guides. I am trying to fly using the route mode (section D.1 in your guide) but I am not able to fly the set course. The set course usually deviates some degrees from the course I fly (checked on the bottom of the F2). I guess there is no need to add or subtract magnetic variation or drift angle when entering the course or play with the Greben setting. As a pilot I should simply enter the desired (true) course and  that's it. Is this inaccuracy to be expected or am I doing something wrong? Thank you.


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2 minutes ago, kikimora said:

@AeriaGloria Thank you for your guides. I am trying to fly using the route mode (section D.1 in your guide) but I am not able to fly the set course. The set course usually deviates from the course I fly (checked on the bottom of the F2). I gues there is no need to add or subtract magnetic variation or drift angle when entering the course. As a pilot I should simply enter the desired (true) course and  that's it. Is this inaccuracy to be expected or am I doing something wrong? Thank you.

 

I made my own graphic for this. The doppler can determine drift angle from wind, and magnetic variation is already compensated for by Petrovich/CPG adjusting KM-2. Since these errors are known they are corrected. One of the biggest advantages of route mode over normal heading hold 

IMG_2841.jpeg

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11 minutes ago, kikimora said:

Ok, so is the operation as simple as entering the course to SFPA and the roll channel takes care of the rest?

Great graphic, btw. Thanks!

Yeah just be aware it’s easy to overpower roll channel with 18% cyclic, and it will not bank you more than 15 degrees. It deflects 15% for every degree difference, so within 6.5 degrees from set course it will give less and less output, and is even easier to overpower 

In addition, you have to press the “OFF” button when done using if you want it to work right. Hover hold/Route hold both do this, that if they are deactivated by exceeding doppler limits (7 degrees pitch, 30 degrees roll, or by passing the 50 kmh ground speed threshold, or 3,000m AGL limit) then their last input is saved in your autopilot. If it gets deactivated becuase I pitch below 7 degrees while it wants me to turn 6.5 degrees left, it will constantly be trying to turn me left with full deflection in circles over and over again until it’s either turned off or re-engaged. Fun fact, pressing “OFF” will also re center your pitch/roll attitude hold as if you had just pressed and released trim or just turned them on…….

You will know you are on the right course when the roll channel is at 0 deflection, and using the hat trim is especially helpful for adjustments. 

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  • AeriaGloria changed the title to Mi-24P autopilot and weapons guides, + Aerodynamics

  I have updated my weapons guide with bomb lofting section and autopilot with new graphics, but much more importantly…….

   I have added my own translation of an aerodynamics document that explains the aerodynamic features and issues of the Mi-24, including graphs giving control deflection/trim needed for level flight at different speeds, and for different flight modes. It includes many other graphs and information that may be of interest. 
 

I have put a lot of work into interpreting the graphs and doing my best to explain them, let me know if I got anything from or if there is any suggestions

Aerodynamics Translated:

https://drive.google.com/file/d/1ooc_8euzYEI21G2IV7X1xWMd1mlv7ess/view?usp=drivesdk


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