Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

The Lounge A place to talk about almost anything but politics and religion.

737 Max
737 Max
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 17th January 2020, 12:45 AM   #1071
jan.didden is offline jan.didden  Europe
diyAudio Member
 
jan.didden's Avatar
 
Join Date: May 2002
Location: Westende Resort, BE coast
Quote:
Originally Posted by rsavas View Post
Like driving a car without a license or a clue?

Iraq reasoning, use them up or they will expire anyways.
Military reasoning mentality, it can be reckless, as DT says, people can get hurt.

Iraq logic
Sorry Rick, I don't agree with any of that. I understand you are angry and/or sad, but this has NOTHING to do with Iraq. It's all plain logical choices.

That what you call military reasoning mentality is plain logic. Isn't it a good choice to expend two $500k missiles to stop an enemy $50M jet from bombing the bejezus out of you??

Don't make the mistake that in hindsight you should have done something else. You can't use that argument.

You may take the position that war itself is immoral. That's a valid position.

Jan
  Reply With Quote
Old 17th January 2020, 02:10 PM   #1072
Vovk Z is offline Vovk Z  Ukraine
diyAudio Member
 
Join Date: Oct 2011
Location: Kyiv
Quote:
Originally Posted by rsavas View Post
is there a need to launch two?
Launch two missiles is usual rule for such systems. Because usual hit probability of one missile can be somewere about 0.3-0.8 (of cause it is close to 0.9-0.99 for civil airliner).

Last edited by Vovk Z; 17th January 2020 at 02:18 PM.
  Reply With Quote
Old 17th January 2020, 02:11 PM   #1073
Vovk Z is offline Vovk Z  Ukraine
diyAudio Member
 
Join Date: Oct 2011
Location: Kyiv
Quote:
Originally Posted by rsavas View Post
Iraq reasoning,
- it was Iran, not Iraq.
  Reply With Quote
Old 17th January 2020, 02:18 PM   #1074
Vovk Z is offline Vovk Z  Ukraine
diyAudio Member
 
Join Date: Oct 2011
Location: Kyiv
Quote:
Originally Posted by rsavas View Post
It could not calculate the targets speed? determine what is was, where it was?
processing, damn that target is big & slow, going in that direction
TOR-M1 (NATO "SA-15 Gauntlet") which shut that missiles has a calculator inside. It has a "Full auto" mode too.
Of cause it was a mistake, even Iran militaries recognised it.
  Reply With Quote
Old 17th January 2020, 03:38 PM   #1075
jan.didden is offline jan.didden  Europe
diyAudio Member
 
jan.didden's Avatar
 
Join Date: May 2002
Location: Westende Resort, BE coast
The SA-8 is command-guidance. That means that it is directed toward the target by ground-based equipment. Typically you have a dedicated missile tracking radar and a target tracking radar whose data are compared in a computer and missile guidance corrected as necessary.
The advantage is that you'd have a relatively simple missile, but the larger the range becomes, the larger the error becomes.
That is why you see this only with low range close-in defense.

For larger ranges you'd have (semi)active homing where the missile has its own nose-cone tracking radar and homes on a target that is 'lit' by a ground based target tracking radar. Missile gets more complicated (and expensive) but accuracy does not suffer with range.
Of course the missile wouldn't just fly to the target, it continuously calculates an intercept point and flies there.

If you go to later systems like the US Patriot (but other countries have similar) you use TVM, track via missile, where the missile acts as (airborne) target tracking radar and does it all by itself. It still send target and its own data downlink for coordination of multiple engagements. You don't want all missiles to fly to the same target and other get through.
Its complicated, but in multiple engagement situations, each target is 'lit' periodically with a different code modulation so both the missile and ground control know which target they are talking about.
But then you start to get in the $5M price range per missile.

Another story I'll explain later is how they modified Patriot to counter Saddams' Scuds at 6000km/hr. And no, it did not involve replacing the capacitors with Black Gates ;-)

Jan
  Reply With Quote
Old 19th January 2020, 04:08 PM   #1076
Charles Darwin is offline Charles Darwin  United Kingdom
diyAudio Member
 
Join Date: Nov 2009
Location: Birmingham, UK
Back to the 737 Max and yet another ooopsie:

Source: Boeing discovers issue with 737 Max flight computers - CNN
  Reply With Quote
Old 20th January 2020, 11:17 AM   #1077
Stuey is online now Stuey  Australia
diyAudio Member
 
Join Date: Mar 2006
Location: Perth, Western Australia
Definitely interesting Jan!
  Reply With Quote

Reply


737 MaxHide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


New To Site? Need Help?

All times are GMT. The time now is 09:49 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Copyright ©1999-2020 diyAudio
Wiki