The T30 Heavy Tank was a World War II American tank project developed to counter new German tanks, such as Tiger I, Tiger II, and the Jagdtiger or Soviet heavy tanks, such as IS-1 or IS-2. It weighted 142,000 pounds, had a 155mm gun and 11 inches of.
F-14 Tomcat using afterburners for take off. The original Pratt & Whitney TF30 engines were replaced with GE F100's not requiring afterburners to be used on take off.