minesweeper design

[imrankhaled]

i am designing a preliminary design of minesweeper.i have already done with lines, ga, scantling, shellplating, hydrostatic calculation. i have no opportunity to test that wheather it is right or wrong. if anyone interested plz email me at imrankhaled@yahoo.com i am also facing some problem in rudder design, shafting and engine arrangement . anyone can help me in this case plz mail me at imrankhaled@yahoo.com .

[mydauphin]

A. Why do you need a Minesweeper.
B. It would be better to post question on forum to get then answered.

[imrankhaled]

my adviser has given me the task to design a minesweeper. and i just want to check that my design is correct or not. actually i want to upgrade my task. can you help me plz . do you have any rulebook regarding warship design . i am really especting co operation from seniors and if this happen i will be greatly helped

[mydauphin]

Warship design.... Jane fighting ships are reference here...
Make it Fast, heavy, redundant, crew quarters, lots of electrical capacity, cranes, winches, masts...
But Minesweepers have particular needs. Made so ship is not Magenetic, they used be made of wood, now made of composites or Aluminum.

[Luckless]

Biggest thing for a modern mine sweeping boat is that it should actually be a small fleet, not a single boat. The boats doing the actual sweeps shouldn't carry crew. Modern mines are far too dangerous to bother risking humans to deal with them. If you are going to try designing a new mine sweeper, design it as a drone!

[apex1]

todays minesweeping technique

http://abeking.com/publish/marinePOP/Eminen02.html

http://abeking.com/publish/marinePOP/troika.html
http://abeking.com/publish/english/flash.html

Regards
Richard

[YuriB]

Link to the drawings of Russian minesweeper 1258 "Evgeniya"
http://forums.airbase.ru/2008/02/t60495--Rejdovyj-tral~schik-pr1258-Evgeniya.html
You may need to enter through www.anonimyzer.com to download the prints.

[imrankhaled]

THANK YOU ALL . CAN ANYBODY HELP ME OUT HOW TO DESIGN A MINESWEEPER ENGINE ROOM ARRANGEMENT.YuriB , CAN YOU GIVE ME THE MINESWEEPER DESIGNS YOU REFFER BY MAIL. I WILL BE GREATLY HELPED. THANK YOU ALL AGAIN. IF ANY BODY INTEREST TO TEST MY DESIGN I AM THERE TO CONTACT WITH YOU.

[Guillermo]

Minesweepers are nowadays included in the wider concept of Littoral Combat Ship, easy to reconfigure for different roles, including anti-submarine warfare, mine countermeasures, anti-surface warfare , intelligence, surveillance and reconnaissance, homeland defense, maritime intercept, special operations and logistics. Search internet for the concept.
http://en.wikipedia.org/wiki/Littoral_combat_ship
http://www.naval-technology.com/projects/littoral/

Cheers.

[Ad Hoc]

How detailed does your ER layout need to be?

[mydauphin]

Man... Wish I could play with one of those Littoral Combat Ships....Sweet

[imrankhaled]

Here Is An Example . I Need A Arrangement Like This But I Cound Not Find The Engine Drawing , Can Anybody Help In This Case

[Ad Hoc]

Since you already have a "typical arrangement" and you wish yours to be like that, you have all the information you need?

If you want a dwg of a 750BHP engine, then just contact the engine suppliers or try the CAD blocks in this website.

[Boston]

Biggest thing for a modern mine sweeping boat is that it should actually be a small fleet, not a single boat. The boats doing the actual sweeps shouldn't carry crew. Modern mines are far too dangerous to bother risking humans to deal with them. If you are going to try designing a new mine sweeper, design it as a drone!

way to make the modern observation Mr Luckfull ( what can I say Im a glass is half full kind of thinker ) I love that idea although I have nothing for the US military but Ill throw you a few points for that one
seems the age of fighter jets is moving into highly maneuverable remote swarms as well. I just never thought it would apply to surface ships.

[imrankhaled]

with your help i am somehow done with engine foundation. now i am going to design propeller shaft, can anyone help me with any reference book. any body have the book "PROPELLER HANDBOOK" by DAVE GIRR.

[Ad Hoc]

For books, see your university or local library.

[Boston]

basically you want large diameter low pitch, with a cowling ( sometimes ) for best efficiency
depends on your speed

http://www.google.com/url?sa=t&source=web&ct=res&cd=4&url=http%3A%2F%2Fwww.alberg30.org%2Fmaintenance%2FMechanicalPropulsion%2FPropeller%2Fpropcalc.xls&ei=EawBSvPLPOKGmQeO2-WcCA&rct=j&q=propeller+calculator&usg=AFQjCNFB6br-uMSOLFpUfjJA1b-BWz1lHA&sig2=dV4CgSRQjDWJVVY2PzJ8aA

there will be a download you will have to open but this is the most detailed one I found

Ive heard Javaprop is also good

for basic shaft size and materials there is a great desk reference call "the wily engineers desk reference" that is kinda a condensed engineers handbook of formulas and there uses.

best
B

[imrankhaled]

i have calculated the heel angle caused by gunfire of my ship. plz check this out and if you have any good options plz let me know. here AH is taken the height between the nozzle and the point of action of I ( moment of inertia) so any good option plz mail at imrankhaled@yahoo.com

[imrankhaled]

i am expecting answer for gun any one have any advice?

[Luckless]

Don't know if you still care about this thread, found it again while looking for something else.

But anyway, are you sure on your numbers for that gun fire. The weight of your projectile outweighs the largest shells fired from a naval gun by over 1000lbs.

I wouldn't expect a minesweeper to carry much more than an 88mm, but more likely a 20mm, if not even just .50 cal guns.

[thudpucker]

Lordy I wonder sometimes what these guys are going to do with these things?

[imrankhaled]

actually the weight is taken from bofore 70 series guns.the weight is given 4568 lbs so i used that.
more over i care about your advice and i will again go through this. thank you

[Boston]

Even the German Bismark only fired a shell of about 1600 lbs
if your building something in that size range or say
three times that size
you might be stretching it to say its a mine sweeper

[liki]

4568lb is likely the weight of the gun itself, atleast L/60 variant is listed with that weight on Wikipedia. An artilleryman hauls a cartridge of 40mm shells easily enough.

The same article lists a ligher 40mm variant at 870g which sounds quite about right based on my field artillery experince.

http://en.wikipedia.org/wiki/Bofors_40_mm_gun

[mydauphin]

I imagine a 4000lb depth charge should take out any subs around...

[thudpucker]

From the Riverboats in Viet Nam hitting mines and breaking the crews Ankles and other bones, I'd bet the 4K depth charge would just about destroy the Mine sweeper as well.

[Boston]

My bad
I thought you guys were talking about a really big pumpkin gun http://www.coolthingsinrandomplaces.com/pumpkinchunkin/DSC00152_jpg.jpg

[Stumble]

I can't believe that a modern minesweaper would really have any offensive weaponry and even it's defensive stuff is going to be limited by the magnetic signature of the gun, between the barrel and the shell. Not to mention that minesweeers don't really want to cary a lot of explosives on board to minimize the risk of secondary explosions in the event that a mine does go off. I wouldn't imagine that you would have more than a Phalanx system or two (http://www.military-heat.com/49/phalanx-closein-defense-system-aircraft-navy/)

Even the assault ships now have gotten rid of the big guns. I think the Navy's largest gun is down to 16" since the larger ones have been replaced with missles and faster fireing auto loading small guns. For these the weight of the projectile is going to be much less than 4k lbs.

[YuriB]

Only machine gun to destroy floating mines and airplanes.http://files.balancer.ru/cache/forums/attaches/b6/3f/300x300/b63ff6db9c44b57bb94dcbf7295c5ebe.jpg

[thudpucker]

JuriB.
No need for those Machine guns.

We have Torpedos that will go out and wait for a target. The world will probably never see another mine.
I dont know who might use mines other than Terrorists using home-made floating bombs or suicide bombers in a Rubber boat loaded with explosives.

Snipers would take them out from the Conn.

Those Machine guns wont reach any airplane endangering a ship.

[YuriB]

There still a lot of WW2 lost mines with ropes. And still many countries use similar to protect their shores.
As for planes, there are no too many planes that could spot the GRP made ship on radar and no missiles for that small one.

[Stumble]

A little research on wikkipedia turns up that modern armerment on the USN Svenger class minesweaper is nothing more than two .50 caliber machine guns... I think you are over arming your battleship/sweaper.