Technology and Operations
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Re: Speed settings on T1 torpedos
Posted by:
SnakeDoc
()
Date: May 24, 2011 07:15AM
Hello
SImon D Wrote:
-------------------------------------------------------
> I've read that the T1 air driven torpedo motors
> could be set at variable speeds of 44KTs, 40KTs
> and 30KTs. I also heard that U-Boats never used
> the fastest speed, setting as there was a chance
> that running at 44KTs could burn out the motor,
> and thios fastest setting was restricted to motor
> torpedo boats. I'm just wondering if anyone could
> confirm this restriction.
Well, I have met such a notice only on few web pages.
The U-Boats were adapted to launching torpedoes with that speed -
the TVRe (TDC) as well as Vorhalttabelle (tables with angle shots for
specific conditions) have position with torpedo speed 44 KTs.
But I have reviewed some torpedoes firing reports available on the
page uboatarchive.net - the G7a shots were performed with maximum speed
40 KTs. The interesting thing is, that the commanders marked the 40 KTs
speed as "voll" - full speed. So probably it was the fastest setting used
on the U-Boats.
On the uboatarchive.net I have found two more related fragments:
"FAT-1 – Air-propelled, always. Has three speeds (30, 40, and 44 knots), but is shot
with only 30 and 40 knots—and practically always with 30 knots."
[www.uboatarchive.net]
"A red bar on G7a, torpedo indicates that it is not to be fired with
a speed setting of 44 knots during trials, in order to preserve its mechanism."
[www.uboatarchive.net]
> Also could these speed settings be configured
> while the torpedos were in the tubes and ready for
> shooting, or did the torpedos need to be removed
> and physically opened up to set the motor?
Yes, look at chapter III - "TORPEDO ARMAMENT AND EQUIPMENT" - External
Adjustment Fittings in the british report on U-570
(http://www.uboatarchive.net/U-570BritishReport.htm):
"Speed - High, medium and low."
The setting gear for the speed was located on the torpedo tube near the
bow bulkhead, close to the housing enclosing the torpedo stop bolt
and triggering latch.
--
Regards
Maciek
[www.tvre.org]
SImon D Wrote:
-------------------------------------------------------
> I've read that the T1 air driven torpedo motors
> could be set at variable speeds of 44KTs, 40KTs
> and 30KTs. I also heard that U-Boats never used
> the fastest speed, setting as there was a chance
> that running at 44KTs could burn out the motor,
> and thios fastest setting was restricted to motor
> torpedo boats. I'm just wondering if anyone could
> confirm this restriction.
Well, I have met such a notice only on few web pages.
The U-Boats were adapted to launching torpedoes with that speed -
the TVRe (TDC) as well as Vorhalttabelle (tables with angle shots for
specific conditions) have position with torpedo speed 44 KTs.
But I have reviewed some torpedoes firing reports available on the
page uboatarchive.net - the G7a shots were performed with maximum speed
40 KTs. The interesting thing is, that the commanders marked the 40 KTs
speed as "voll" - full speed. So probably it was the fastest setting used
on the U-Boats.
On the uboatarchive.net I have found two more related fragments:
"FAT-1 – Air-propelled, always. Has three speeds (30, 40, and 44 knots), but is shot
with only 30 and 40 knots—and practically always with 30 knots."
[www.uboatarchive.net]
"A red bar on G7a, torpedo indicates that it is not to be fired with
a speed setting of 44 knots during trials, in order to preserve its mechanism."
[www.uboatarchive.net]
> Also could these speed settings be configured
> while the torpedos were in the tubes and ready for
> shooting, or did the torpedos need to be removed
> and physically opened up to set the motor?
Yes, look at chapter III - "TORPEDO ARMAMENT AND EQUIPMENT" - External
Adjustment Fittings in the british report on U-570
(http://www.uboatarchive.net/U-570BritishReport.htm):
"Speed - High, medium and low."
The setting gear for the speed was located on the torpedo tube near the
bow bulkhead, close to the housing enclosing the torpedo stop bolt
and triggering latch.
--
Regards
Maciek
[www.tvre.org]
| Subject | Written By | Posted |
|---|---|---|
Speed settings on T1 torpedos
|
SImon D | 05/01/2011 01:03PM |
|
Re: Speed settings on T1 torpedos
|
SnakeDoc | 05/24/2011 07:15AM |