Rates of climb and descent

Bellman · 07-12-05, 04:55 AM

Having noticed a significant change from SC I set out to do some tests of the relative rates

Both at 100 ft. (Same locations) Descend to 300 ft. TA deployed.

Akula 2
Descend - SC 1.8 - 39 sec. DW - 1m 53 sec. (An increase of 250 % appx)
Ascend - SC 1.8 - 41 sec. DW - 1m 53 sec

SW
Descend - SC 1.8 -44 sec. DW - 2m 19sec. (An increase of 330% appx.)
Ascend - SC 1.8 -44 sec. DW - 2m 19 sec.

At first blow this looks bad for the SW - further tests to 600 ft confirmed the disparity.

However it soon became apparent that the SW was taking much longer to level-off, particularly in the
last 20 ft or so. So when this was allowed for by measuring the time both took, to achieve the ordered depth,
but less those last 20 ft. both subs had almost identical performances.

This may not be new info. to many but others may wish to allow for this in the SW - those 20 ft. can account
for as much as a minutes loss of time, which could be vital in many situations.

I cannot help but feel that 1 minute to travel 2o ft while levelling is a little 'unrealistic' ? :hmm:

Kapitan · 07-12-05, 07:38 AM

what about the speeds i made the akula hit 47knots while at flank and blowing ballast tanks

did the same for the sea wold and i hit 51

Qppralke · 07-12-05, 07:47 AM

I guess the seawolf is simply faster.

Nexus7 · 07-12-05, 08:06 AM

Then that is still like in SC, Kapitan, when performing E-Blows from a sufficent depth.

Good point Bellman. Did you use the same speeds the same map and the same location (water currents) and did you repeat the test?

If so that's curious that the SW takes more time to level off, as the inertia should be lower with lower tonnage and dimensions i thought? :hmm:

Kapitan · 07-12-05, 08:46 AM

in sc i never managed to pass 37 knots so ?????

Nexus7 · 07-12-05, 09:32 AM

with the Akula II load 100% air, go deep and do an E-Blow: 40 Knots. SW i didn't try but i remember bewteen 40 and 50 knots.

Kapitan · 07-12-05, 09:34 AM

i did an eblow and managed about 47 knots

Nexus7 · 07-12-05, 10:03 AM

Kapitan i meant in SC...

Kapitan · 07-12-05, 10:07 AM

lol sorry it me who become confused

Bellman · 07-12-05, 11:19 AM

Nexus7 - yes to all.

I am converting to the Ak for DW after concentrating on the SW in SC/SCX2.

As you would need to know the relevant comparative performance characteristics I wondered whether SA
had adjusted anything (else) in favour of the Ak.

I cannot understand the protracted SW leveling off process, which I have replicated several times. :hmm: :hmm:

Kapitan · 07-12-05, 11:22 AM

why is it when i do e blow in dw my stern is the first thing to bounce out of the water ?

Bellman · 07-12-05, 11:24 AM

Mein Kapitain,

The hot weather here has led to small increase in alcohol consumption, so I am rather concerned that I now see TWO sheep.
I am sure there was only one before ?

Do you intend to let them breed ?

Will your posts be guarded by massive flocks of sheep ?

Kapitan · 07-12-05, 11:27 AM

oooo yeah :P lol they will breed untill they fitt on subsim no more lol

Bellman · 07-12-05, 11:30 AM

Good on you - meatey

Sorry typo - matey.

Kapitan · 07-12-05, 11:31 AM

i fancy lamb for dinner

hear lenie lenie lennie come to uncle kapitain

07-12-05, 04:55 AM	#1
Bellman Sea Lord Join Date: Feb 2004 Posts: 1,945 Downloads: 220 Uploads: 0	Rates of climb and descent Having noticed a significant change from SC I set out to do some tests of the relative rates Both at 100 ft. (Same locations) Descend to 300 ft. TA deployed. Akula 2 Descend - SC 1.8 - 39 sec. DW - 1m 53 sec. (An increase of 250 % appx) Ascend - SC 1.8 - 41 sec. DW - 1m 53 sec SW Descend - SC 1.8 -44 sec. DW - 2m 19sec. (An increase of 330% appx.) Ascend - SC 1.8 -44 sec. DW - 2m 19 sec. At first blow this looks bad for the SW - further tests to 600 ft confirmed the disparity. However it soon became apparent that the SW was taking much longer to level-off, particularly in the last 20 ft or so. So when this was allowed for by measuring the time both took, to achieve the ordered depth, but less those last 20 ft. both subs had almost identical performances. This may not be new info. to many but others may wish to allow for this in the SW - those 20 ft. can account for as much as a minutes loss of time, which could be vital in many situations. I cannot help but feel that 1 minute to travel 2o ft while levelling is a little 'unrealistic' ? :hmm:

07-12-05, 07:38 AM	#2
Kapitan Sub Test Pilot Join Date: Mar 2005 Location: UK + Canada Posts: 7,090 Downloads: 68 Uploads: 7	what about the speeds i made the akula hit 47knots while at flank and blowing ballast tanks did the same for the sea wold and i hit 51 __________________ DONT FORGET if you like a post to nominate it by using the blue diamond Find out about Museum Ships here: https://www.museumships.us/ Flickr for all my pictures: https://www.flickr.com/photos/131313936@N03/ Navy general board articles: https://www.navygeneralboard.com/author/aegis/

07-12-05, 07:47 AM	#3
Qppralke A-ganger Join Date: Jan 2002 Location: from Poland , in Wales . . Posts: 72 Downloads: 0 Uploads: 0	I guess the seawolf is simply faster. __________________

07-12-05, 08:46 AM	#5
Kapitan Sub Test Pilot Join Date: Mar 2005 Location: UK + Canada Posts: 7,090 Downloads: 68 Uploads: 7	in sc i never managed to pass 37 knots so ????? __________________ DONT FORGET if you like a post to nominate it by using the blue diamond Find out about Museum Ships here: https://www.museumships.us/ Flickr for all my pictures: https://www.flickr.com/photos/131313936@N03/ Navy general board articles: https://www.navygeneralboard.com/author/aegis/

07-12-05, 09:34 AM	#7
Kapitan Sub Test Pilot Join Date: Mar 2005 Location: UK + Canada Posts: 7,090 Downloads: 68 Uploads: 7	i did an eblow and managed about 47 knots __________________ DONT FORGET if you like a post to nominate it by using the blue diamond Find out about Museum Ships here: https://www.museumships.us/ Flickr for all my pictures: https://www.flickr.com/photos/131313936@N03/ Navy general board articles: https://www.navygeneralboard.com/author/aegis/

07-12-05, 08:06 AM	#4
Nexus7 Commander Join Date: Jun 2004 Location: Switzerland Posts: 469 Downloads: 2 Uploads: 0	Then that is still like in SC, Kapitan, when performing E-Blows from a sufficent depth. Good point Bellman. Did you use the same speeds the same map and the same location (water currents) and did you repeat the test? If so that's curious that the SW takes more time to level off, as the inertia should be lower with lower tonnage and dimensions i thought? :hmm:

07-12-05, 09:32 AM	#6
Nexus7 Commander Join Date: Jun 2004 Location: Switzerland Posts: 469 Downloads: 2 Uploads: 0	with the Akula II load 100% air, go deep and do an E-Blow: 40 Knots. SW i didn't try but i remember bewteen 40 and 50 knots.

07-12-05, 10:03 AM	#8
Nexus7 Commander Join Date: Jun 2004 Location: Switzerland Posts: 469 Downloads: 2 Uploads: 0	Kapitan i meant in SC... __________________ If you are going through hell... keep going (Winston Churchill)

07-12-05, 10:07 AM	#9
Kapitan Sub Test Pilot Join Date: Mar 2005 Location: UK + Canada Posts: 7,090 Downloads: 68 Uploads: 7	lol sorry it me who become confused __________________ DONT FORGET if you like a post to nominate it by using the blue diamond Find out about Museum Ships here: https://www.museumships.us/ Flickr for all my pictures: https://www.flickr.com/photos/131313936@N03/ Navy general board articles: https://www.navygeneralboard.com/author/aegis/

07-12-05, 11:19 AM	#10
Bellman Sea Lord Join Date: Feb 2004 Posts: 1,945 Downloads: 220 Uploads: 0	Nexus7 - yes to all. I am converting to the Ak for DW after concentrating on the SW in SC/SCX2. As you would need to know the relevant comparative performance characteristics I wondered whether SA had adjusted anything (else) in favour of the Ak. I cannot understand the protracted SW leveling off process, which I have replicated several times. :hmm: :hmm:

07-12-05, 11:22 AM	#11
Kapitan Sub Test Pilot Join Date: Mar 2005 Location: UK + Canada Posts: 7,090 Downloads: 68 Uploads: 7	why is it when i do e blow in dw my stern is the first thing to bounce out of the water ? __________________ DONT FORGET if you like a post to nominate it by using the blue diamond Find out about Museum Ships here: https://www.museumships.us/ Flickr for all my pictures: https://www.flickr.com/photos/131313936@N03/ Navy general board articles: https://www.navygeneralboard.com/author/aegis/

07-12-05, 11:24 AM	#12
Bellman Sea Lord Join Date: Feb 2004 Posts: 1,945 Downloads: 220 Uploads: 0	Mein Kapitain, The hot weather here has led to small increase in alcohol consumption, so I am rather concerned that I now see TWO sheep. I am sure there was only one before ? Do you intend to let them breed ? Will your posts be guarded by massive flocks of sheep ?

07-12-05, 11:27 AM	#13
Kapitan Sub Test Pilot Join Date: Mar 2005 Location: UK + Canada Posts: 7,090 Downloads: 68 Uploads: 7	oooo yeah :P lol they will breed untill they fitt on subsim no more lol __________________ DONT FORGET if you like a post to nominate it by using the blue diamond Find out about Museum Ships here: https://www.museumships.us/ Flickr for all my pictures: https://www.flickr.com/photos/131313936@N03/ Navy general board articles: https://www.navygeneralboard.com/author/aegis/

07-12-05, 11:30 AM	#14
Bellman Sea Lord Join Date: Feb 2004 Posts: 1,945 Downloads: 220 Uploads: 0	Good on you - meatey Sorry typo - matey.

07-12-05, 11:31 AM	#15
Kapitan Sub Test Pilot Join Date: Mar 2005 Location: UK + Canada Posts: 7,090 Downloads: 68 Uploads: 7	i fancy lamb for dinner hear lenie lenie lennie come to uncle kapitain __________________ DONT FORGET if you like a post to nominate it by using the blue diamond Find out about Museum Ships here: https://www.museumships.us/ Flickr for all my pictures: https://www.flickr.com/photos/131313936@N03/ Navy general board articles: https://www.navygeneralboard.com/author/aegis/