Speaker 1: Audible dot com is the leading provider of downloadable digital
Speaker 1: audio books and spoken word entertainment. Audible has over one
Speaker 1: hundred thousand titles to choose from to be downloaded to
Speaker 1: your iPod or MP three player. Go to audible podcast
Speaker 1: dot com slash brain stuff to get a free audio
Speaker 1: book download of your choice when you sign up today.
Speaker 1: Welcome to Brainstuff from how stuff works dot com where
Speaker 1: smart Happens. Hi Am Marshall Brain with today's question, how
Speaker 1: do the engines breathe in a diesel submarine? A diesel
Speaker 1: submarine is a very good example of a hybrid vehicle.
Speaker 1: Most diesel subs have two or more diesel engines. The
Speaker 1: diesels can run propellers, or they can run generators that
Speaker 1: recharge a very large battery bank. They can also work
Speaker 1: in combination, one engine driving a propeller and the other
Speaker 1: driving a generator. The sub surface, or it must cruise
Speaker 1: just below the surface using a snorkel to run those
Speaker 1: diesel engines. Once the batteries are fully charged, the sub
Speaker 1: can then head underwater. The batteries power electric motors that
Speaker 1: drive the propellers. Battery operation is the only way a
Speaker 1: diesel sub can actually submerge deep into the water. The
Speaker 1: limits of battery technology severely constrained the amount of time
Speaker 1: a diesel sub can stay underwater. This is the huge
Speaker 1: benefit of using nuclear power in a sub. Nuclear generators
Speaker 1: need no oxygen, so a nuclear sub can stand or
Speaker 1: water for weeks at a time. For more on this
Speaker 1: and thousands of other topics, is It how staff works
Speaker 1: dot Com? Streaming TV shows and movies directly to your
Speaker 1: home is a breeze with Netflix. As a Netflix member,
Speaker 1: you can instantly watch TV and movies on your PC, Mac,
Speaker 1: mobile device, or television. Get a free thirty day try
Speaker 1: our membership. Go to Netflix dot com, slash stuff and
Speaker 1: sign up today.