PGRV was to go on a Mk-600 RV and was due to be a development for the D5.
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Those older FAS NWD publications weren't always 100% accurate.
You can see them claiming that the AMaRV was to be deployed aboard the Trident II in Table 5.10, yet we know from the published info on the dimensions of the Trident II missile and the published info on the dimensions of the AMaRV that the AMaRV's physical dimensions significantly exceeded the available space within the annulus under the shroud of the Trident II.
I suspect that the Mark 600 variant of the PGRV was likely similar to the E2 concept, in that it was a W76 warhead with a backpack extension containing an IMU, a GPS receiver (which is not the best idea given the likely suppression of GPS during nuclear exchanges – I suppose its possible that the initial concept did not include one and that this was only added later on for the E2 concept?), and flaps for maneuvering.
It is interesting that they imply there were at least two major variants of the PGRV, and that only one was being developed for use on Trident. Presumably the other variant would have been closer to the AMaRV in size and capabilities.
The oddest part is the terminal homing claim. True radar based terminal homing is an extremely bulky and heavy technology. I seriously doubt that they were considering including this on all PGRV variants, as doing so would make it impossible to fit it inside the Trident annulus, and extremely challenging to fit it inside other missiles.
I wonder if perhaps they actually meant terminal homing through an ultra-high-accuracy IMU? That is a far more plausible technology, and while it may or may not fit within an envelope capable of being stuffed onto a Trident II (you could probably only fit a downsized version with limited accuracy inside of it), it could definitely fit within an envelope capable of being stuffed onto other missile platforms.
It would be
exorbitantly expensive to do this, but the upside is that it would be completely immune to radar jamming (which can severely impair the accuracy of radar based terminal homing) and GNSS satellite constellation jamming/disruption (which can severely impair the accuracy of GPS-assisted terminal homing).
Either way, the only thing you've shown through these documents is that there was a special variant of the PGRV called the Mk-600 that was intended to be used on the Trident II, but this was not the same as the baseline version of the PGRV.
Like I said, this does not demonstrate that $175 billion has been allocated.
The only thing it demonstrates is that President Trump claims that he believes his wish list for Golden Dome should cost an estimated total of $175 billion dollars to implement.
President Trump's claim is not the same thing as Congress allocating that quantity of money!
Additionally, many people have argued that his $175 billion estimate is wildly inaccurate given the capabilities he is claiming Golden Dome will have.
The Congressional Budget Office (CBO) released an analysis on the cost of Golden Dome, which concluded that it will cost $831 billion dollars to implement.
The American Enterprise Institute conducted their own analysis, which concluded that it will cost $3.6 trillion dollars to implement.
So far, the only money actually allocated by Congress for the purposes of implementing Golden Dome amounts to a total of $37.4 billion dollars. This is a tiny fraction of the total cost of the system. There is no guarantee that Congress will continue to release further funding for the system (let alone well over $100 billion worth of further funding), especially so given that most of the money they have already released doesn't even seem to have been spent yet.
Remember, Trump can claim whatever he wants, but he does not control the purse strings. Congress does. And until Congress explicitly passes legislation authorizing spending, Trump does not get a dime towards his project. They have generously passed legislation authorizing $37.4 billion towards his pet project. There is no guarantee that they will authorize further funding, and if they do, there is no guarantee that they will authorize further funding in the amounts needed to fulfill President Trump's vision for the Golden Dome system.
insidedefense.com
