LGM-35A Sentinel - Ground-Based Strategic Deterrent (GBSD) program

[Desertfox]

So which is it? New warhead same RV, new warhead new RV or old warhead new RV?

New warhead, same RV body, but new manufactured RVs

 

[Scott Kenny]

Are there any technical-papers available online concerning the Mk-21 and/or NGRV?

I'd be absolutely shocked if there were!

 

[Forest Green]

Wouldn't that be a Mk21B then?

In the case of the MMIII, Mk12s were equipped with W62s (170kt) and Mk12As got the W78s (335kt). So it's customary for the first to have no letter - the RV equivalent of a warhead -0.

Minuteman Missile Nuclear Warheads

The nuclear warhead, also known as the Reentry Vehicle, on a minuteman missile, went through a number of variations and improvements, to be used with the Minuteman missile.

minutemanmissile.com

 

[Forest Green]

Just something small I noticed in the details but W87-1 is described as a W78 replacement (note d), not a W87-0 replacement, so this may well imply something W78-sized physically but with W87-1-like yield, which is good because it suggests MIRVs. Also 5o ICBMs in storage - are they MMIIIs or Peacekeepeers?

 

[Scott Kenny]

Also 50 ICBMs in storage - are they MMIIIs or Peacekeepeers?

Strongly suspect MM3s.

 

[Desertfox]

The Peacekeepers are in storage, I don't think any MMIIIs are. Don't expect the Peacekeepers to be reactivated, but I do think the motors are being used for space launch boosters.

-1 and -0 use the same RV body so same size. But yes MIRVed