Редуктор для "Огайо"
Сборка редуктора ГТЗА для американского подводного атомного ракетоносца "Огайо" в 70-х гг. Вид со стороны выходного вала, в нос. С той стороны подключались две турбины, как пишет Вепрь.
ИИ с переводом не справился, а мне не досуг
We are looking at the aft end of the reduction gear set. The two turbines are mounted on the opposite side, presumably to the shaft visible just under the man's head. A train of gears and pinions, some of which are visible on the exposed shafts, transmit and magnify the turbines' torque to drive the bull gear. The bull gear, not visible in the photo, drives the shaft directly.
I served on an Ohio class, I know slot about that reduction gear set. If you notice the bull gear on the left upper see how the face is different? That is where the Emergency Propulsion Motors gear set interfaces with the reduction gears. Also I'm surprised it's not in a clean room environment. When we opened the gears we had to tent off that section of the engine room. The Navy leases the gear sets. We don't own them unless we mess them up through neglect or something else.
Power plant is so over designed, it's kind of ridiculous. At max speed, it's a regular thing to slam it in full reverse. If you did that with a truck or bus, bye bye transmission. When it happens on a sub, the whole boat 'torque steers' over a few degrees and you shockingly stop pretty damn quick considering the thing is nearly 7000 tons. I don't remember the number we arrived at for horse power, but I want to say it was 5+ million or something. Like you referred to above, the torque is the crazy part. Stop the shaft with all it's weight & momentum, stopping the screw with all it's hydrodynamic force against it, then full crank in reverse. Numbers have to get bananas at that point. It's only the little stuff like electrical relays & small valves that break. No big part is really at risk and most systems are crazy over designed.
I was walking back from smoke pit in shaft alley when the call came back for all back full. I was right in ERML-aft where I could see the shaft come to a stop & then reverse. That's when I was looking forward & saw the whole room move (actually it was the reduction gears..) or what looked like it. Super crazy when the largest thing in the room moves, you have to 2nd guess your senses that YOU are not the thing moving. It made me reach out for the railing, deck plates started rattling, etc.. That's 100% one of those things I'll never forget.
All that cool engineering covered up in engine room green and gray :) It was always very warm
I was on two Lafayette class boats in the 1960's. I always wondered what the reduction gear looked like inside. They wouldn't let me peek.
They had locks even on the inspection doors. I shocked the hell out of my qualification board when one of the board members asked me where the locks on the reduction gear doors were made. I immediately replied with Rochester NY. I didn't have the nerve to tell them it was my home town and that was the only reason I remembered.
They have locks because nobody on the crew is qualified to work inside them. There was an incident years ago when a sailor who didn't want to go to sea cut a lock and threw something inside. He didn't go to sea; he went to a court martial.
Там ещё ссылки на первоисточники, можете полудить. Там есть интересное.
https://babel.hathitrust.org/cgi/imgsrv/download/pdf?id=mdp.39015076084030;orient=0;size=100;seq=291;num=5407;attachment=0
https://catalog.hathitrust.org/Record/003217424