2results about How to "Low cost design" patented technology

The application relates to a waveguide coplanar slow wave line, belonging to the technical field of frequency scanning antennas, and solves the problem of large space occupation caused by independent design of the slow wave line and the radiation unit of the frequency scanning antenna in the prior art. The waveguide coplanar slow wave line is integrated with a rectangular waveguide; the slow wave line has multiple omega-shaped bends. One radiation unit is arranged on the slow wave line every interval of the omega-shaped bends. The application realizes the longest length of the slow wave line under the premise of fixed spacing of the radiation units, and realizes low profile design by arranging the slow wave line and the waveguide to be coplanar.

This invention proposes a full-size hybrid laminar flow vertical tail prototype structure for low-speed wind tunnels, belonging to the technical field of special test model design for low-speed wind tunnels. The aim is to achieve a lightweight and low-cost design for the full-size hybrid laminar flow vertical tail body while ensuring stability and maneuverability. In this invention, the upper, middle, and lower sections of the vertical tail are connected sequentially. The external body of the vertical tail is covered by a vertical tail skin and a cover plate. Heating wires are laid inside the vertical tail skin on one side of the middle section. Several pressure measurement holes are arranged on the upper and lower sections of the vertical tail. An air intake chamber is installed on the middle section of the vertical tail, comprising 21 independent air intake chambers. Each independent air intake chamber has four air intake holes and one independent air intake chamber pressure measurement hole on its sidewall. Steel pipes from the upper, middle, and lower sections of the vertical tail pass through reinforcing ribs to form a grid structure, with positioning rulers on both sides of the grid. This invention achieves a lightweight and low-cost design for the vertical tail, facilitating model installation in the wind tunnel and alleviating pressure on the support system.