Dean,
I found a couple more items. I'm having trouble finding a picture of the flaps
open. I had one a while back.
http://imageevent.com/albacore/albacorehistoricphotos;jsessionid=r9qabaad11.tiger_s?n=25&z=2&w=0&x=0&c=4&m=24&p=24
"The parachutes were attached to the after end of Albacore's fairwater
and successfully streamed while the ship was cruising submerged. The resulting
deceleration curves indicated that such a system effectively aided in
emergency recovery."
Project "Bailout" might not have been the most successful of Albacore's
tests but it certainly showed some creativity was at work."
http://www.hazegray.org/navhist/albacore.htm
From:
brenthartwig@hotmail.com
To: personal_submersibles@psubs.org
Subject: [PSUBS-MAILIST] Stopping Flaps
Date: Mon, 25 Aug 2008 17:03:24 -0700
Dean,
You could install some sort of stopping flaps (speed brakes) on both sides of
your sub that are curved to fit the shape of your hull. Much like a US Navy
test sub USS Albacore. Then operate them with hydraulics or adapted electric
actuators starting with a unit like the Lenco Trim Tab actuators.
I've been planning on having this type or braking system on my winged
underwater gliding subs. With two stopping flaps on the training edge of the
wings. One opening up, and one down at the same time.
"Built as a test bed for the U.S. Navy, the Albacore featured a
tear-drop shaped hull, new diving controls, a dorsal rudder and a new
high-yield steel for her pressure hull. In addition, the Navy, at one time
or another, experimented with speed brakes, contra-rotating screws, a
drag chute, camouflage paint and three different arrangements of stern
control surfaces.
The NSF report ignited debate within Navy circles over a variety of
issues such as the merits of twin propellers vs. singles, and the sacrifice
of surface stability for undersea speed. The result of the recommendations
and ensuing debate was the U.S.S. Albacore.
The Dorsal rudder was reinstalled and enlarged and the boat
was outfitted with speed brakes. These brakes - another concept borrowed
from aviation - technology, consisted of 10 hinged panels ringing the
after part of the ship. When needed, they were hydraulically opened into
the waterflow, bringing the boat to a rapid stop."
http://www.hazegray.org/navhist/albacore.htm
http://en.wikipedia.org/wiki/USS_Albacore_(AGSS-569)
From:
Recon1st@aol.com
Date: Mon, 25 Aug 2008 18:55:44 -0400
Subject: Re: [PSUBS-MAILIST] Air Tanks
To: personal_submersibles@psubs.org
Frank I
am using 12hp for my main propulsion. I gave up trying to calculate speed but I
should have
plenty.
The reason for so much maneuverability is the bottom of Lake Superior many
granite boulders
etc. I
will need to travel pretty fast to cover any amount of the Lake. I am thinking
of a 20 to 30' above the
bottom
but at 6 knots or so when one of those big beast jumps up in front of me, I am
going to need
options.
A transfer pump or sliding weight for sure would not fit my needs. I may even
have an
emergency
sea anchor deployment for quick stops. Reverting back to my drag racing days.
I loved
the dry dive video. I learned much watching it maneuver I have greater
confidence that my
efforts
should yield the kind of performance I am looking for. Not to mention it oughta
be a real
In a
message dated 8/24/2008 8:15:39 P.M. Central Daylight Time, ShellyDalg@aol.com
writes:
Hi Dean.
I think you're chasing the right idea with front and back dive planes. I
had considered that but let it go because of the extra work. It just seems to
me that back dive planes would be a real plus if you have enough power to make
them work. Did you see the "dry dive" videos? With the center mounted
dive planes the sub stays level when ascending/diving but it would be nice to
be able to angle the sub just with the dive planes. Like you say, much like
flying. I don't know how much speed you'd have to get to make the dive planes
overcome the front/back balance, but if it's close enough to neutral, it may
not take that much power.
Twin trim
tanks front and back with a transfer pump would help if the pump was able to
shift weight fast enough. Maybe a sliding drop weight would be less trouble to
make. I will be able to shift the seat forward and backward a little and
I'm hoping that will give me a little angle change. Damn, I wanna get this
thing wet soon! Frank D.
It's only
a deal if it's where you want to go. Find your travel deal here.
It's only
a deal if it's where you want to go. Find your travel deal here.
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