The paper presents the results of experimental studies of an arcjet thruster in pulsed mode of operation on nitrogen with a thrust value of up to 32 mN and energy consumption of up to 30 watts. The pulse mode of operation of the arcjet thruster is provided by the developed power source. At measured values of temperature at the nozzle and pressure in the arc chamber of the engine in a pulsed mode of operation define the basic characteristics of gas-dynamic functions of gas flow. The forecast of the achieved values of the specific impulse when using ammonia as a working fluid is carried out

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This paper presents the results of an experimental study of the parameters of nitrogen, argon and helium plasma obtained in high-frequency capacitive ring discharge at a pressure of 35 Pa. The parameters were determined by a single Langmuir probe. Work is being carried out as part of a project to develop a backlash ion microwave plasma generator. The object of study is ionized gas formed in the ring capacitance gap of a microwave solid-state generator emitter on the MOSFET transistor MRF284. The power consumed by the microwave generator in the study is no more than 5 W. The work resulted in getting the volt-ampere characteristics of a high-frequency discharge in low-pressure gas and determining the main plasma parameters.

В настоящей работе представлены результаты экспериментального исследования параметров плазмы азота, аргона и гелия, полученной в высокочастотном ёмкостном кольцевом разряде при давлении 35 Па. Параметры определялись одиночным зондом Ленгмюра. Работа проводится в рамках проекта по разработке зазорного ионного микродвигателя с СВЧ-генерацией плазмы. Объектом исследования является ионизированный газ, образованный в кольцевом ёмкостном зазоре излучателя твердотельного СВЧ-генератора на MOSFET-транзисторе MRF284. Мощность, потребляемая СВЧ- генератором в исследовании - не более 5 Вт. В результате работы были получены вольт-амперные характеристики высокочастотного разряда в газе низкого давления, определены основные параметры плазмы.

The article is devoted to the measurement of the ion beam velocity of an accelerator two-gap ion thruster. A theoretical representation of the physical process of capturing charged particles using a cylindrical sensing element is given. A schematic diagram and a printed circuit board for detecting an accelerated ion beam have been developed. The expression for calculating the signal current of the sensing element is defined. A condition for capturing charged particles using the critical mobility of charges is formulated.