1,204 karma · joined June 15, 2014
maybe "What are the computing performance numbers developers should know in 2019?"
that's nothing.
FYI, the self-replicating robots is kinda the hard part.
The 737 horizontal tail externally looks like 3 moving parts:front-to-back (and large to small) is: Stabilizer : Elevator : Balance Tab.
see here: http://www.b737.org.uk/flightcontrols.htm#Pitch
Stabilizer moves in response to trim - this is what we are mostly looking at.
Elevator moves in response to the control column.
Balance tab has several modes depending on flaps and hydraulic system health - but it mostly serves to offset aerodynamic force on the elevator in case the hydraulics fail and the elevator has to be controlled manually.
(there is one other pitch control, I learned - the spoilers on the wing can give some help in landing in case the elevator controls fail.)
There are many modes of operation and simple generalizations will not help.
they are a fantastic way to project power without having land bases, obviously. We have used them quite a lot for this purpose in the 60 years since cruise missiles were developed - including in the wars we are currently fighting.
also they are major sources of money for industry in important congressional districts, and have symbolic power that politicians and leaders crave.
no one else does it because they are expensive, difficult to develop, and no one else has the need to support global operations like we do (though China is getting there, and the UK fondly remembers when it used to).