3results about How to "Reduce reflective area" patented technology

The application relates to an antenna reflector plate, an antenna and a communication device. The antenna reflector plate comprises a first reflector plate and a second reflector plate connected to each other; wherein the first reflector plate has the characteristics of being able to transmit high-frequency signals and reflect low-frequency signals, and the second reflector plate has the characteristics of being able to reflect high-frequency signals and low-frequency signals. The antenna reflector plate can improve the distortion degree of the radiation pattern of the high-frequency band radiation unit and ensure the antenna radiation index.

This invention discloses a modular lift supply aircraft, a combined aircraft, and a method for operating the combined aircraft, relating to the field of aircraft technology. The modular lift supply aircraft is equipped with a lift-providing device, a male docking head, and a female docking head. The combined aircraft includes a main aircraft and a modular lift supply aircraft mounted on the main aircraft. This invention provides a modular lift supply aircraft, a combined aircraft, and a method for operating the combined aircraft, enabling fixed-wing aircraft to achieve vertical takeoff and landing capabilities while still maintaining large payload, long range, and good stealth performance.

The invention relates to the technical field of fastening connection of aerospace, and particularly discloses a high-shear-resistance slotless titanium alloy threaded self-plugging rivet and a preparation process thereof.The self-plugging rivet comprises a core rod, a pipe body, a rivet body and a driving nut, the driving nut, the rivet body and the pipe body are sequentially arranged on the core rod in a sleeving mode, and the rivet body is divided into a head part, a middle part and a tail part; the end face of the end, close to the driving nut, of the nail body head is flat, the driving nut abuts against the end face, a threaded groove allowing the core rod to penetrate through is formed in the center of the end face, the surface roughness of the end face is 1.6-2.2 micrometers, and the diameter of the outer circle of the end face is larger than that of the circumcircle of the driving nut. The end face of the head of the rivet body is flat, the center of the end face is only provided with the threaded groove allowing the core rod to penetrate through, after the core rod is broken, the core rod can completely shield the threaded groove in the center of the end face, and the structure can reduce the radar reflection area and improve the stealth performance of an airplane.