Moderator: Community Manager
[Post Reply] [*]  Page 1 of 1  [ 6 posts ] 
Author Message
rifleman
Post subject: High energy RF emitters and missilesPosted: December 13th, 2011, 10:59 am
Offline
Posts: 501
Joined: September 4th, 2010, 8:44 am
Has anyone any idea about safe distances for missiles to be from High energy radio frequencey emitters like radio, radar and ECM kit?

Just looking at some of the designs and wondering if we're placing the 2 to close together in some drawings?

_________________
"There was nothing wrong with Titanic when she left the Shipyard" Tim McGarry Belfast Comedian


Top
[Profile] [Quote]
acelanceloet
Post subject: Re: High energy RF emitters and missilesPosted: December 13th, 2011, 3:38 pm
Offline
User avatar
Posts: 7510
Joined: July 28th, 2010, 12:25 pm
Location: the netherlands
on the dutch LCF the missiles only just clear the SABRE EW system. on the karel doorman class frigates the NSSM pass just next to the goalkeeper with it's search radar. I do not know how it is in other navies, but it seems an clearance of 1-3m is enough, as long as those aren't directly exposed to the flames and for the heat only for a moment.

_________________
Drawings are credited with J.Scholtens
I ask of you to prove me wrong. Not say I am wrong, but prove it, because then I will have learned something new.
Shipbucket Wiki admin


Top
[Profile] [Quote]
heuhen
Post subject: Re: High energy RF emitters and missilesPosted: December 13th, 2011, 5:12 pm
Offline
User avatar
Posts: 9102
Joined: December 15th, 2010, 10:13 pm
Location: Behind you, looking at you with my mustache!
I remember my stepfather (former Lieutenant Commander in the Norwegian navy) fortallte me a lot of weird things on the equipment every time we were on board the Oslo class. so he said that:

- Sea Sparrow has reached top speed when it have passed the side of the ship!!!
- The fact that we found out during an exercise that they may have a zone around the ship where the radar on the missile does not work. for under that exercise when they did not have that, the missile had a habit to come home!!!

But he said it probably for fool around with me!


Top
[Profile] [Quote]
erik_t
Post subject: Re: High energy RF emitters and missilesPosted: December 13th, 2011, 7:08 pm
Offline
Posts: 2936
Joined: July 26th, 2010, 11:38 pm
Location: Midwest US
rifleman wrote:
Has anyone any idea about safe distances for missiles to be from High energy radio frequencey emitters like radio, radar and ECM kit?

Just looking at some of the designs and wondering if we're placing the 2 to close together in some drawings?
I've got some old NAVSEA documents that give HERO danger distances. They are quite considerable, so much so that I am lead to believe there may be a duration component.


Top
[Profile] [Quote]
rifleman
Post subject: Re: High energy RF emitters and missilesPosted: December 14th, 2011, 8:14 am
Offline
Posts: 501
Joined: September 4th, 2010, 8:44 am
when i was a surface to air missile operator in the army we weren't allowed to place missiles within 3m of a radiating antenna and that was a manpack radio kicking out 25w. I dread to think what something like a type 909 or 1022 is kicking out. When chatting to guys who did supplemental AD for the armilla patrol they were mainly located on the flightdeck to give backblast clearence.

_________________
"There was nothing wrong with Titanic when she left the Shipyard" Tim McGarry Belfast Comedian


Top
[Profile] [Quote]
erik_t
Post subject: Re: High energy RF emitters and missilesPosted: December 14th, 2011, 4:11 pm
Offline
Posts: 2936
Joined: July 26th, 2010, 11:38 pm
Location: Midwest US
This is what I've got. Unfortunately, it includes only quite old systems with quite wide beams (and for that matter, quite old ordinance).

[ img ]


Top
[Profile] [Quote]
Display: Sort by: Direction:
[Post Reply]  Page 1 of 1  [ 6 posts ]  Return to “Off Topic”

Jump to: 

Who is online

Users browsing this forum: No registered users and 25 guests


The team | Delete all board cookies | All times are UTC


Powered by phpBB® Forum Software © phpBB Limited
[ GZIP: Off ]