The United States gives us the B2 blueprints, but we may not be able to build them.
As the world's only stealth strategic bomber, the B-2 bomber has always attracted much attention from countries around the world, and many countries are also very interested in its technology. As a country with strong reverse engineering capabilities, our country may not be able to build the B2 if the United States gives us the blueprints. If China really gets a B-2 bomber, it will probably not be able to imitate a strategic bomber similar to the B-2 bomber.
Because reverse engineering imitates the structure of the product, and the most difficult technology to overcome on this kind of stealth fighter aircraft is not the structure, but the materials and aerodynamic layout. Structurally, the principle of the B-2 is very simple. It is just to make the shell first and then install the parts inside, so as to reduce the performance gaps of the fighter and reduce the radar reflection wave. However, the materials used by the B-2 and its aerodynamic layout cannot be copied through reverse engineering. Time and resources must be spent to study it piece by piece.
B-2 bomber
The B-2 does not have a vertical tail, unlike traditional aircraft. The aircraft is yaw neutral, which means that when the B-2 turns left or right, it will not generate aerodynamic force to return to center. The B-2 is controlled by Northrop's patented airbrake-rudder on the outer trailing edge of the wing. The airbrake-rudder can be split up and down on both sides, and the cracks act as speedbrakes at the same time. When cracked asymmetrically, they are used as rudders.
Most of the surface of the B-2A is covered by a layer of special elastic material to maintain uniform conductivity on the surface to reduce radar wave reflection from joints or seams. In the design, parts that cannot rely on appearance for stealth (such as air intakes) must be coated with radar absorbing material (RAM), and its composition is still highly confidential.
Four GE F118-110 non-afterburning turbofan engines are installed in the engine nacelles on both sides of the B-2A's central fuselage, each with a rated static thrust of 8,618 kilograms. The F118 is developed on the basis of the F101-X, which is a fighter version of the B-1 bomber's F101 engine.
Reference for the above content: Baidu Encyclopedia—B-2 Bomber