B-52
It has 8 engines, four on each side, two per boom.
A B-52 has 8 TF33-P-3 turbofan engines
I believe the B-52 Bomber with 8 jet engines if I remember right. I can't think of anything with more.
The military bomber with six engines is the Convair B-36 Peacemaker. It was a strategic bomber used by the United States Air Force during the Cold War, notable for its large size and long range. The B-36 was designed to carry nuclear weapons and was in service from 1949 until 1959, serving as a deterrent during the early years of the Cold War. Its unique design featured four piston engines and two jet engines, allowing it to operate efficiently at high altitudes.
Any bomber's use is ONLY for the military.
Engines (8), engine pods (4), pylons (2), external weapons (depends on the weapon)?
The Russian Tupolev Tu-160 is the world's largest bomber.
Good aerodynamics and powerful engines.
There was no bomber of any kind that had 8 propellers.
The question of the cost of a military aircraft is hard to answer. The reason is the military will buy a production run that includes, support, technical documentation & drawings, training, and manuals, spare parts and spare engines. The Army does not usually go out and buy 1 airplane like we buy a car. The B-29 is an old airplane that is no longer made. So are you referring to the original cost of this bomber or the cost to buy a restored, flying bomber?
I assume you mean during World War 2. They made the Jeep, Tanks, Military Trucks, Half Tracks, Grenades, Landing Craft, Bomber Engines, B24 Liberator Bomber and possibly other war material.
There are no current military aircraft with 6 engines.