Knisley Welding caters to the aircraft exhaust system for some of Bell’s aircrafts. Let’s take a look into the brief history of Bell aircraft and how it has come about, how it has contributed to the aircraft industry, and how it is doing now. Bell Aircraft Corporation was a US aircraft manufacturer that is known for creating the first ever supersonic aircraft, the Bell X-1. Bell Aircraft has built numerous fighter aircrafts for World War II, as well as different types of civilian and military helicopters. Bell Aircraft was bought by Textron in 1960 and is now known as Bell Helicopter.