56results about How to "Easy power adjustment" patented technology

The invention discloses a cook-off test device for testing the reaction level of a slapper detonator with regard to high-temperature stimulation. The cook-off test device is used for carrying out a cook-off test on the slapper detonator, and comprises an electric heating ring, a barrel body, a barrel cover, a test support and a witness plate used for bearing an impact of the slapper detonator after burst during the test, wherein the electric heating ring is installed outside the barrel body in a sleeving manner and used for heating the barrel body; the test support is installed in the barrel body; the barrel cover is installed at one end of the barrel body; the slapper detonator and the witness plate are installed on the test support respectively; and the witness plate is located between the slapper detonator and the barrel cover. The cook-off test device disclosed by the invention is convenient for adjusting the power of the electric heating ring to control the temperature rising rate of air in the barrel body through heating of the electric heating ring, thus controlling the temperature rising rate of the slapper detonator on the test support in the barrel body; and the reaction level of the detonator is calculated through the degree of destroy of scattering fragments of a shell of the slapper detonator on the witness plate when the slapper detonator reacts with regard to the high-temperature stimulation.

The invention relates to a plasma flowing control technology and discloses a device and method for relieving separation stalling of an airfoil profile through radio-frequency discharge plasma excitation. The device comprises a radio-frequency exciter mounted at the front edge of the airfoil profile, and a high-voltage source for providing a high-voltage environment for the radio-frequency exciter;the radio-frequency exciter comprises a covered electrode, an insulating medium layer and a bare electrode which are sequentially attached in a stacked mode, wherein the face, deviating from the insulating medium layer, of the covered electrode is attached to the front edge of the airfoil profile, and the covered electrode is attached in the extending direction of the front edge of the airfoil profile; and the high-voltage source comprises a radio-frequency plasma power source, a signal modulation computer and a variable-voltage circuit, the output end of the radio-frequency plasma power source is connected to the primary terminal of the variable-voltage circuit, the signal modulation computer is connected with the radio-frequency plasma power source through a COM interface data line, andthe secondary terminal of the variable-voltage circuit is connected with the radio-frequency exciter. Reattachment of a separated adherent layer is promoted through radio-frequency plasma excitation,the aerodynamic performance of the airfoil profile is improved, and the stalling angle of attack and the lift coefficient are increased.