The difference between B 1 and B2 and B52 bombers is that the test flight time is different, the maximum flight speed is different, and the maximum takeoff weight is different.

First, the test flight time is different.

The bombers 1 and B 1:B- 1 made their first test flight at 1974.

2.B2 bomber: The B-2 bomber made its first test flight in July 1989.

3.B52 bomber: The B-52 bomber made its first test flight in April 1952.

Second, the maximum flight speed is different.

1 and B 1 bomber: B- 1 the maximum flight speed of the bomber is 1530 km/h (1.25 Mach).

2.B2 bomber: The maximum flight speed of B-2 bomber is1170 km/h (Mach 0.95).

3.B52 bomber: The maximum flight speed of the B-52 bomber is 1 0,000 km/h (0.81Mach).

Third, the maximum takeoff weight is different.

Bombers 1 and B 1:B- 1 The maximum takeoff weight of bombers is 2 16400 kg.

2.B2 bomber: the maximum takeoff weight of B-2 bomber 170600kg.

3.B52 bomber: The maximum takeoff weight of the B-52 bomber is 220,000 kg.

Baidu encyclopedia -B- 1 bomber

Baidu encyclopedia -B-2 bomber

Baidu encyclopedia -B-52 bomber