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Battery: How Big?

 
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Battery: How Big? - 3/28/2018 10:53:31 PM   
c3k

 

Posts: 369
Joined: 4/25/2017
Status: offline 		I've looked. ;)

Yep, just cutting my teeth and now playing apache85's excellent Submarine Tutorial 1.3. It starts me with a Russian Diesel Electric submarine, the Rostov-on-Don.

The sub has a battery. I see the endurance and other information. The battery status is shown as "### fuel units remaining".

Pulling up the sub's stats, I don't see how many "battery fuel units" the sub can "fill up" with. I see that "creep" has 133.3 hours of endurance and that at creep (in all 3 different depth's speed bands) uses "1 battery unit per minute".

Some simple maths would show that 133.3 x 60 (hours to minutes), gives 8,000 minutes. At 1 unit/minute, that would mean the battery could hold a full charge of 8,000 units.

Is that written anywhere in the stats? Should it be? Or, am I extrapolating beyond what the battery can do? (It starts at ~800 "fuel units" in the battery.)

If I've missed it, I'd appreciate a hint where the battery capacities are listed.

Thanks,
Ken
Post #: 1
RE: Battery: How Big? - 3/28/2018 11:15:36 PM   
Puciek

 

Posts: 63
Joined: 1/10/2017
Status: offline 		It would be nice to list it, as I could do basic pixel math and figure out the capacity. And that's what I did: the bar is 200px wide, the full at 10px is 500 points, so the total capacity will be 200/10*500=10000 units. No reason to not have it in the database though, same for diesel capacity.

(in reply to c3k)
Post #: 2
RE: Battery: How Big? - 3/29/2018 11:07:39 AM   
c3k

 

Posts: 369
Joined: 4/25/2017
Status: offline 		Yeah, there are stats for EVERYTHING when you look at a unit's database entry. Even how many damage points it can take.

I'd love to see total fuel capacity and total battery capacity.

Why?

If I want to fully charge my DE boat, I need to know WHEN it is fully charged. Does every battery fill the green bar? Or, is that a generic bar and different batteries stop at different distances?

Also, as I'm planning my master operation, how long will it take to fully charge the battery? If I don't know how much capacity it has, I can't even come close to knowing how long it'll take to charge.

(in reply to Puciek)
Post #: 3
RE: Battery: How Big? - 3/29/2018 6:16:17 PM   
Schr75


Posts: 803
Joined: 7/18/2014
From: Denmark
Status: offline 		Hi guys

The easiest solution to this is just to use the editor to add a new sub.
The new sub will be fully fueled, so the fuel bars will show full capacity of the battery/AIP/diesel tank.
See attached pic.

Regarding battery charge time.
The time to fully charge the battery depends not only on the charge left in the battery.
Modern subs are electric powered with the diesels only driving the generators, so if you run at full speed on the surface, the batteries will still discharge as the electric motors consume more power than the diesel generators can deliver.
Therefore the charge time depends on the subs speed as well as the remaining charge in the batteries.

Hope this helped.

Søren




Attachment (1)

(in reply to c3k)
Post #: 4
RE: Battery: How Big? - 3/29/2018 6:41:19 PM   
c3k

 

Posts: 369
Joined: 4/25/2017
Status: offline 		Thanks.

Yeah, I understand the difference in charge rate based on submarine speed and what the diesel is doing.

The total capacity is the thing...

I like the way you used the editor to show that the Type 212A has a 6,000 unit capacity battery. (And 60,000 diesel units.)

(in reply to Schr75)
Post #: 5
RE: Battery: How Big? - 3/30/2018 10:07:42 AM   
TyphoonFr

 

Posts: 138
Joined: 11/23/2017
From: FRA
Status: offline 		Hello,

II did several tests, the submarines have a reloading rate that is different.

For example,the electric motors of an A-19 Gotland consume 4 bu/min to advance CREEP surface or pericopes depth, generatrices driven by diesel engines provide 12,5 bu/min, the battery are recharged of 8,5 bu/min (12,5 - 4 = 8,5 bu/min).
If the consumption of electric motors varies with speed, the power of the generator is constant and does not vary with speed, for the A-19 Gotland is still 12.5bu/min.

For an A-19 Gotland:
At stop: 12,5 - 0 = the battery are recharged by 12,5 bu/min.
At Creep: 12,5 -1 = the battery recharge by 11.5 bu/min.
At Cruise: 12,5 - 4 = the battery are discharged by -8,5 bu/min.
At Full: 12,5 - 25 = the battery are discharged by -12,5 bu/min.

As the generators of the PL641 Foxtrot provide more than 25 bu/min and the electric motors consume 25bu/min max at FULL, the PL641 Foxtrot battery recharge at all speeds in diesel mode.

At each submarine, the reloading rate is different so you have to do the test with each of them.

In Database viewers, we do not tell you the total capacity of the battery, the electric power provided by the diesel and without calculation, you do not know the total amount of fuel that an A/C transports, nor its consumption, which vary with its load.In addition the units of measurement are different, so you have to do conversion (Kg,liter,USG,G imp)

But with the Database viewers, you know the size of your crew, it's very important for the cook, when he prepares dinner, you also know the number of sailor dead in a shipwreck.Or if you must evacuate your submarine, counting the sailors who have come out and are in the lifeboats, you know if all the crew has evacuated.
Oops we do not know the number of lifeboats on board)

In the meantime, since you can not modify the DataBase, you can use the descriptions to complete it and save your data (Battery capacity, driver size ...)

If it does not exist, a thread on the lack of the Database viewer, could be interesting. (With prohibition to children to fight)

A commander goes to war with what he has, not with what he would like to have.
Hold good commander, the reinforcements arrive ... .



< Message edited by TyphoonFr -- 3/30/2018 10:11:28 AM >

_____________________________

Christophe

To all English teachers of the forum, sorry if English is not my mother language.

(in reply to c3k)
Post #: 6
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