What is the MAD system?

[Rudel_chw]

Hi,

I have a doubt ... the F-15E manual says on page 40:

"Controls AHRS, Standby Attitude Indicator, MAD and EGI (if equipped)."

 

I have searched everywhere, but can't find what MAD stands for, does anyone know?  I'm sure that this is not a typo, as the TO 1F-15E-1 manual is identical on this respect.

I know that most likely this is a not simulated item, but I still would like to know what it stands for.

Thanks a lot for any help you can give me with this, and best regards to all.

 

Eduardo

[IanC58]

maybe - Magnetic anomaly detector

[strikeeagle]

6 minutes ago, IanC58 said:

maybe - Magnetic anomaly detector

Exactly 

[Rudel_chw]

35 minutes ago, IanC58 said:

maybe - Magnetic anomaly detector

Maybe if it were an antisubmarine aircraft, like the S-3 Viking, but unlikely on the F-15e  

[IanC58]

4 minutes ago, Rudel_chw said:

Maybe if it were an antisubmarine aircraft, like the S-3 Viking, but unlikely on the F-15e  

you quoted "if equipped" - I helped but you don't agree so not my problem, it has relevance with navigational equipment not just anti submarine

Edited July 12, 2023 by IanC58

[strikeeagle]

7 minutes ago, Rudel_chw said:

Maybe if it were an antisubmarine aircraft, like the S-3 Viking, but unlikely on the F-15e  

He answered your question correctly.  But those antennas and how they specifically work on the 15 are in a different TO that I hope no one here has access to.

[GGTharos]

8 hours ago, Rudel_chw said:

I have searched everywhere, but can't find what MAD stands for, does anyone know?  I'm sure that this is not a typo, as the TO 1F-15E-1 manual is identical on this respect.

Magnetic anomaly detectors can be used for very accurate navigation; detecting submarines is not their only use.   Combined with the world magnetic model and potentially some other inputs, recognition of where the aircraft is located as compared with the WMM could yield accuracy similar to GPS, or at least reasonably constrain INS drift.

Edited July 12, 2023 by GGTharos

[Rudel_chw]

7 hours ago, IanC58 said:

… it has relevance with navigational equipment not just anti submarine

 

7 hours ago, strikeeagle said:

He answered your question correctly. 

 

1 hour ago, GGTharos said:

Magnetic anomaly detectors can be used for very accurate navigation; detecting submarines is not their only use.   Combined with the world magnetic model and potentially some other inputs, recognition of where the aircraft is located as compared with the WMM could yield accuracy similar to GPS, or at least reasonably constrain INS drift.

Thank you all  .. you have taught me something new that I didnt knew 

Cheers!
 

[strikeeagle]

8 hours ago, Rudel_chw said:

 

 

Thank you all  .. you have taught me something new that I didnt knew 

Cheers!
 

Fun fact, light grey’s have a MAD antenna too.  On both types, those are those “knobs” on the end of the tailbooms.

Edited July 12, 2023 by strikeeagle

[eaglecash867]

If you want to get a little detail on how these systems work, civilian aircraft have a similar system that has evolved over the years from analog to digital.  The analog systems were called flux detectors/flux gates, and the digital systems they have now are called magnetometers.  Some systems even have other sensors, such as OAT and GPS all contained in the same "antenna" and those are called Remote Sensor Modules.  They all have the same purpose of providing more accurate navigation info to systems like the AHRS.

[jaylw314]

9 hours ago, Rudel_chw said:

Thank you all  .. you have taught me something new that I didnt knew 

Cheers!
 

If it makes you feel better, I totally thought @strikeeagle and @IanC58 were joking about what MAD meant as well  

[IanC58]

If you let your mind drift away and start going into "what ifs" - there is a scenario/subject of Nuclear/Magnetics

[Rainmaker]

The MAD stuff was all for AHRS, which has been gone for probably 25 years or so now.

Dunno what all these other conversations above are about…

[IanC58]

35 minutes ago, Rainmaker said:

The MAD stuff was all for AHRS, which has been gone for probably 25 years or so now.

Dunno what all these other conversations above are about…

Late to the party then