All very good questions, which I am happy to answer.
The pipes at the end are in fact spinal-mount particle beam weapons, the retro-thrusters can be seen directly to left and right of them.
![Image](http://img695.imageshack.us/img695/2033/andromedashieldgenerato.jpg)
This is one of the eight primary shield generators, which are arrayed to give total coverage to the main hull. In an updated model I have independent generators on the wings as well.
![Image](http://img39.imageshack.us/img39/8291/andromedaescapepods.jpg)
This is one of the escape pod "docks", and there are of 16 of them, bringing the total number of escape pods to 80, with five pods per dock.
![Image](http://img517.imageshack.us/img517/7370/andromedathrusters.jpg)
This is one of the four maneuvering thrusters intended for rolling, mounted on the upper and lower parts of the superstructure.
![Image](http://img842.imageshack.us/img842/521/andromedahangar.jpg)
This is one of the two hangars, although I am debating whether or not to move them from the back of the wing to the sides of the forward hull.
![Image](http://img33.imageshack.us/img33/4264/andromedahyperdriveequi.jpg)
These, of course, are the main engines. The structures connecting the two in the center and the structures on the side engines are part of the hyperdrive infrastructure.