U.S. Army Upgrades Howitzers

U.S. Army Upgrades Howitzers

MILITARY U.S. Army Upgrades Howitzers PROBLEM The M777A2 howitzer, artillery equipment used by the U.S. Army, has a breech spindle that seals the chamber to hold pressure and prevent gas leaks during firing. Chromium plating applied to the spindle was corroding while...