Although Chuck Yeager first broke the sound barrier in 1947, the first flight of a commercial supersonic travel did not take place until 1969. Discuss the subject of supersonic flight, both military and civilian. Why were supersonic bombers, such as the B

• Although Chuck Yeager first broke the sound barrier in 1947, the first flight of a commercial supersonic travel did not take place until 1969. Discuss the subject of supersonic flight, both military and civilian.
• Why were supersonic bombers, such as the B-58 and the B-70, phased out, whereas the subsonic B-52 is scheduled to fly for up to 90 years?
• Why were the Concorde and Tu-144 supersonic transports commercial failures?
• Why did the United States end its SST project in 1971? 

The primary posting should be approximately 100 words.