(WIP) Ship's Acceleration Physics

JREX53 · 04-28-09, 08:39 PM

Thank you Soundman for your encouragement. I hope people understand how much work goes into working on mods. Especially a mod like this, a lot of testing, and for me, writing down a lot of numbers.

NEON DEON · 04-28-09, 10:22 PM

Maybe after this mod is complete we could have Fleet boat drag racing.

Ok T3 does the quarter mile in 6.7

Seconds!

no

Minutes.

JREX53 · 04-28-09, 10:56 PM

Neon Deon,

According to my spreadsheet it takes the T3 to go from 1 kt to 18 kts in approximately 14 mins and 10 secs.

I will look into it though.

Thanks

JREX53 · 04-29-09, 09:34 PM

Quote:

Originally Posted by NEON DEON

Maybe after this mod is complete we could have Fleet boat drag racing.

Ok T3 does the quarter mile in 6.7

Seconds!

no

Minutes.

Neon Deon,

I just reran my test mission for the T3 Tanker and I still come up with the acceleration from 1 kt to 18 kts, that I mentioned, at about 14 min and 10 sec.

NEON DEON · 04-29-09, 10:42 PM

Here is a bit on the Missouri stopping.

"A full crash back is almost a non-event. That's where all four screws are reversed from full ahead to full astern. It takes a little over a mile for the ship to come to a stop before going in reverse, but there is no feeling of inertia throwing you forward - unless you turn the rudders inboard toward each other to close off the passage of water between the twin keels. That is called a "Barn Door Stop" and only the Wisconsin has ever tested it. A former XO of Whisky said that when they threw a piece of wood over the side from the bow at the onset of that maneuver, the ship came to a stop with that wood no further aft than turret III. That's stopping a 57,000 ton ship traveling at 33 knots in about 600 feet, which means that anything that is not tied down winds up on deck or against a forward bulkhead."

As Huel Howser would say"

"ISN'T THAT AMAZING!"

http://www.navweaps.com/index_tech/tech-054.htm

vanjast · 04-30-09, 01:19 AM

Not to mention the loose rudders - Pretty amazing stuff.

I notice that happens with Websters mod that I'm using (maybe it's hard-coded), counteracted by this.

As you know I set up the TDC with false info. I fire one torpedo on the intended target. When this torp is gone I turn slightly towards the ship, anticipating the 'barn door stop'.
Sure enough the ship slams on the brakes, and the first torp misses. But the ship has left itself in a vulnerable position and I slam the the other 3 torps straight at it... and it now cannot accelerate away fast enough... Boom, (dud), Boom.

NEON DEON · 04-30-09, 11:11 AM

Quote:

Originally Posted by JREX53

Neon Deon,

I just reran my test mission for the T3 Tanker and I still come up with the acceleration from 1 kt to 18 kts, that I mentioned, at about 14 min and 10 sec.

JREX53

I am sorry I meant that to be a joke but did not qualify it as such. Not to mention it was a very bad one too. So please disregard the statement.

JREX53 · 04-30-09, 08:30 PM

Quote:

Originally Posted by NEON DEON

JREX53

I am sorry I meant that to be a joke but did not qualify it as such. Not to mention it was a very bad one too. So please disregard the statement.

Oh ok!!

No harm done. But please left me know if you do find something weird happening.

JREX53 · 05-20-09, 11:16 AM

New Version of the Mod is up on SUBSIM and FileFront.

This version has the Light Cruisers completed. There are 2 separate downloads on the servers. One for the People who only play Stock or RFB without RSRDC, and the second one is for the people who play Stock or RFB with RSRDC.

Please enjoy the Mod

Links can be found in the First Post of this thread.

JREX53 · 05-20-09, 01:07 PM

I just found out I have to reupload the mods, I improperly zipped the mod.

I forgot to put the 2 folders into the "Data" Folder.

Sorry for the mix up, will have them uploaded tonight.

04-28-09, 08:39 PM	#1
JREX53 Frogman Join Date: Jan 2006 Posts: 300 Downloads: 353 Uploads: 13	Thank you Soundman for your encouragement. I hope people understand how much work goes into working on mods. Especially a mod like this, a lot of testing, and for me, writing down a lot of numbers. __________________ Jim

04-28-09, 10:22 PM	#2
NEON DEON Ace of the Deep Join Date: Apr 2005 Location: Los Angeles, CA Posts: 1,207 Downloads: 39 Uploads: 5	Maybe after this mod is complete we could have Fleet boat drag racing. Ok T3 does the quarter mile in 6.7 Seconds! no Minutes. __________________ Diesel Boats Forever!

04-28-09, 10:56 PM	#3
JREX53 Frogman Join Date: Jan 2006 Posts: 300 Downloads: 353 Uploads: 13	Neon Deon, According to my spreadsheet it takes the T3 to go from 1 kt to 18 kts in approximately 14 mins and 10 secs. I will look into it though. Thanks __________________ Jim

04-29-09, 10:42 PM	#5
NEON DEON Ace of the Deep Join Date: Apr 2005 Location: Los Angeles, CA Posts: 1,207 Downloads: 39 Uploads: 5	Here is a bit on the Missouri stopping. "A full crash back is almost a non-event. That's where all four screws are reversed from full ahead to full astern. It takes a little over a mile for the ship to come to a stop before going in reverse, but there is no feeling of inertia throwing you forward - unless you turn the rudders inboard toward each other to close off the passage of water between the twin keels. That is called a "Barn Door Stop" and only the Wisconsin has ever tested it. A former XO of Whisky said that when they threw a piece of wood over the side from the bow at the onset of that maneuver, the ship came to a stop with that wood no further aft than turret III. That's stopping a 57,000 ton ship traveling at 33 knots in about 600 feet, which means that anything that is not tied down winds up on deck or against a forward bulkhead." As Huel Howser would say" "ISN'T THAT AMAZING!" http://www.navweaps.com/index_tech/tech-054.htm __________________ Diesel Boats Forever!

05-20-09, 11:16 AM	#9
JREX53 Frogman Join Date: Jan 2006 Posts: 300 Downloads: 353 Uploads: 13	New Version of the Mod is up on SUBSIM and FileFront. This version has the Light Cruisers completed. There are 2 separate downloads on the servers. One for the People who only play Stock or RFB without RSRDC, and the second one is for the people who play Stock or RFB with RSRDC. Please enjoy the Mod Links can be found in the First Post of this thread. __________________ Jim Last edited by JREX53; 05-20-09 at 11:33 AM.

04-30-09, 01:19 AM	#6
vanjast Sea Lord Join Date: Jun 2006 Location: Somewhere else now Posts: 1,740 Downloads: 825 Uploads: 4	Not to mention the loose rudders - Pretty amazing stuff. I notice that happens with Websters mod that I'm using (maybe it's hard-coded), counteracted by this. As you know I set up the TDC with false info. I fire one torpedo on the intended target. When this torp is gone I turn slightly towards the ship, anticipating the 'barn door stop'. Sure enough the ship slams on the brakes, and the first torp misses. But the ship has left itself in a vulnerable position and I slam the the other 3 torps straight at it... and it now cannot accelerate away fast enough... Boom, (dud), Boom.

05-20-09, 01:07 PM	#10
JREX53 Frogman Join Date: Jan 2006 Posts: 300 Downloads: 353 Uploads: 13	I just found out I have to reupload the mods, I improperly zipped the mod. I forgot to put the 2 folders into the "Data" Folder. Sorry for the mix up, will have them uploaded tonight. __________________ Jim