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- Newsgroups: sci.military
- Path: sparky!uunet!cs.utexas.edu!sdd.hp.com!ncr-sd!ncrcae!ncrhub2!ciss!law7!military
- From: John Walker <walker-john@yale.edu>
- Subject: Re: Is this true?
- Message-ID: <C19o3I.3q4@law7.DaytonOH.NCR.COM>
- Followup-To: sci.military
- Sender: military@law7.DaytonOH.NCR.COM (Sci.Military Login)
- Organization: Yale University
- References: <C14405.3pn@law7.DaytonOH.NCR.COM> <C17vLw.Eo6@law7.DaytonOH.NCR.COM>
- Date: Fri, 22 Jan 1993 17:47:41 GMT
- Approved: military@law7.daytonoh.ncr.com
- Lines: 43
-
-
- From John Walker <walker-john@yale.edu>
-
- In article <C17vLw.Eo6@law7.DaytonOH.NCR.COM>, Geoff Miller
- <Geoff.Miller@corp.sun.com> wrote:
- >
- >
- > From Geoff Miller <Geoff.Miller@corp.sun.com>
- >
- >
- > drw@cbnewsg.cb.att.com (david.r.wells) writes:
- >
- > >But 5 meg bombs are awfully rare these days. Even US ICBMs don't carry
- > >much more than 350k warheads.
- >
- > Why are megaton-range weapons rare in this day and age? Also, what are
- > typical yields of the various nuclear gravity bombs still in inventory?
- >
- Multi-megaton warheads on missiles were largely necessary because of the
- inaccuracies of early-generation ICBMs and SLBMs. Modern missiles are
- accurate enough to obviate the need for large yields. As the saying goes,
- "Twenty kilotons on the roof does it every time."
-
- In general, larger yields require warheads that weigh more. Heavier
- warheads mean less range, or fewer RVs... So it is generally more
- efficient to make a missile more accurate, reduce the weight of the
- warhead, make the missile smaller, cheaper, etc.
-
- Gravity bombs are still usually pretty large. US bombs range from 1 to 5
- megatons, the FSU has bombs of 5, 25, and 50(!) megaton yields.
-
- Note that there are a number of limited production run missiles with large
- warheads. There is a SS-18 mod, for example, with a (I believe) 20 megaton
- single RV. Presumably with Cheyenne Mountain chalked on its side...
-
- For pretty complete details of current strategic weapon systems, check the
- IISS's The Military Balance. It is one of the better and less biased
- available sources.
-
- John Walker
- Yale University
- walker-john@yale.edu
-
-