The Mark 21 nuclear bomb was a United States thermonuclear gravity bomb first produced in 1955. It was based on the TX 21 "Shrimp" prototype that had been detonated during the Castle Bravo test in March 1954.

Exploded diagram of the Mk21 reentry vehicle for the W87 [clarification needed] The W87 is an American thermonuclear missile warhead formerly deployed on the LGM-118A Peacekeeper ("MX") ICBM. 50 MX missiles were built, each carrying up to 10 W87 warheads in multiple independently targetable reentry vehicles (MIRV), and were deployed from 1986 ...

The Mark 21 free-fall nuclear bomb was adopted in service in 1955. It was developed on the basis of the prototype TX-21 "Shrimp", which was tested in March 1954 (the Castle Bravo test).

In terms of identification, the W59 refers to the nuclear warhead manufactured, and the term Mk-5 refers to the reentry vehicle used with that specific warhead. Combined, the warhead and reentry vehicle had a width of 16.3 inches, height of 47.8 inches and weighed 550 pounds. The W59 had a yield of 1 megaton, MT.

2001年9月1日 · Mk-21 RV formerly known as the ABRV (Advanced Ballistic Reentry Vehicle) developed by AVCO Systems Division. Heavier, but higher accuracy and lower cost than the Mk-12A. Tests of the Mk-21's hardness to nuclear effects were conducted in 1984-86:

2023年10月31日 · Known as the B-21 Raider, the bomber is set to replace both the B-1 and B-2 and is also built by Northrop Grumman. (The Air Force can also launch nuclear weapons from fighters.) The real advantage...

侏儒的弹头为MK-21型核弹头，它可以在整流罩内携带1枚MK21型弹头，以194kg质量产生当量30万吨TNT的爆炸，或者通过增加核装药，以质量206kg产生当量47.5万吨TNT的爆炸。

The W87 warhead/Mk21 reentry vehicle (RV) is the leading candidate for a single RV option for the Minuteman III ICBM. It is the most modern and safe U.S. nuclear warhead. It incorporates all...

The Mark 21 nuclear bomb was a United States thermonuclear gravity bomb first produced in 1955. It was based on the TX 21 "Shrimp" prototype that had been detonated during the Castle Bravo test in March 1954.

Mk21A is an integrated reentry vehicle (RV) being designed to deploy the W87-1 warhead for the U.S. Air Force’s future Sentinel ICBM. It is an adaptation of the Mk21 reentry vehicle. The Lockheed Martin Mk21A design is maturing using advanced Digital Engineering tools, including advanced modeling and simulation.