I have been working on some of the weapons systems as you build your ships around them, not the other way around!
This is a yet unnamed or RPed missile concept that will be the primary armament of the embarked fighter wing on the HX. Details:
Class: ASMS (Anti Ship Missile Space, ie not surface boost capable)
Size: 9.5 meters
Warhead:25 Mt nuclear warhead
Primary Propulsion: Nuclear Salt Water Rocket
Secondary Propulsion: Conventional Solid Chemical Rocket
So basically this is what I would imagine a missile designed solely for space use would look like. I used the P-70 Moskit as my size guide as its a big robust ASM with hefty engines. It measures 9.7 meters so I am close. Given the speed needed in a short period of time I opted to go two stage. The first is a nuclear salt water rocket for which the fuel is a solution of 20% enriched Uranium Tetrabromide in water. The tanks around the center body are for water. The fuel is kept in a series of boron carbide coated pipes acting as a neutron damper that keep the fuel from reacting (these are inside the ring of water tanks). As the fuel leaves the pipes it enters the plenum immediately aft where the uranium in the fuel reacts, essentially a continuous explosion, which vaporizes and ejects the water and reacting fuel that exits the exhaust bell to provide thrust. I haven't done the calculations yet but this engine should provide extreme thrust so it will meet the needs of a missile. Targeting is provided by a secure link to the HX's fire control but more likely a dedicated sensor ship or fighter via the antennas on the warhead.
As for the picture:
-The first frame shows the two parts of the missile as they are stored in the magazines. The missile was designed to be in two parts so that each is small enough to be moved inside the carriers cargo conveyor which can only accommodate items with a maximum of 6m length. Since this is a two stage missile this was easy to design. Both sides are encased in a protective storage casing which when joined in the hanger ammo handling room also acts as the fighter hardpoint hookup (this can also double as the magnetic launch harness if being launched by a shipboard launcher)
The HX has a standard size four missile launcher intended to handle sensor buoy launches and other specialized munitions but as this is a size four missile the HX could launch these itself in needed.
- The second frame shows the assembled missile as well as a cutaway of the missile inside the casing.
- The third stage shows the primary burn configuration. The casing has been jettisoned and the exhaust end cap blown off during engine ignition. The radiator panels unfold to remove heat from the engine.
- In the fourth frame the primary engine has finished its burn and has been jettisoned. The remaining warhead and secondary engine will coast towards its target. This engine consists of a small solid chemical rocket to provide a single large maneuver if needed and a ring og RCS thrusters for fine homing maneuvers.