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Atomic Emission Spectroscopy: Interference01:30

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In atomic emission spectroscopy (AES), high-temperature atomizers excite a broad range of elements and molecules that generate complex emissions from sources such as oxides, hydroxides, and flame combustion products in the flame or plasma. Several strategies can be employed to minimize spectral interferences caused by overlapping emission lines or bands. These include increasing instrument resolution, choosing alternative emission lines, optimally placing the detector in low-background regions,...
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The driving force for the motion of any vehicle is friction, but in the case of rocket propulsion in space, the friction force is not present. The motion of a rocket changes its velocity (and hence its momentum) by ejecting burned fuel gases, thus causing it to accelerate in the direction opposite to the velocity of the ejected fuel. In this situation, the mass and velocity of the rocket constantly change along with the total mass of ejected gases. Due to conservation of momentum, the...
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A rocket's velocity in the presence of a gravitational field is decreased by the amount of force exerted by Earth's gravitational field, which opposes the motion of the rocket. If we consider thrust, that is, the force exerted on a rocket by the exhaust gases, then a rocket's thrust is greater in outer space than in the atmosphere or on a launch pad. In fact, gases are easier to expel in a vacuum.
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Improving the Combustion Performance of a Hybrid Rocket Engine using a Novel Fuel Grain with a Nested Helical Structure
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Study on Electromagnetic Radiation Interference Caused by Rocket Fuel.

Yuanbo Cui1, Jian Jiang1, Deren Kong1

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Sensors (Basel, Switzerland)
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Rocket fuel combustion creates electromagnetic radiation that can disrupt spacecraft electronics. This study analyzes these radiation characteristics to improve spacecraft electromagnetic compatibility.

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electromagnetic radiationfuelinterferencemodellingspacecraft

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Area of Science:

  • Aerospace Engineering
  • Electromagnetics
  • Combustion Science

Background:

  • Spacecraft launch and return phases involve intense propellant combustion.
  • This combustion generates significant electromagnetic radiation.
  • Electromagnetic radiation can interfere with sensitive onboard electronic equipment.

Purpose of the Study:

  • To investigate the electromagnetic radiation characteristics of rocket fuel.
  • To enhance the electromagnetic compatibility of spacecraft electronic systems.

Main Methods:

  • An antenna-based electromagnetic radiation measurement system was developed.
  • Data analysis was performed on measured electromagnetic radiation.
  • Comprehensive analysis included spatial, time-domain, frequency-domain, and energy-domain characteristics.

Main Results:

  • Detailed electromagnetic radiation characteristics of rocket fuel were obtained.
  • The underlying mechanism of electromagnetic radiation generation was analyzed.
  • A characterization model for rocket fuel electromagnetic radiation was established.

Conclusions:

  • Understanding rocket fuel electromagnetic radiation is crucial for spacecraft design.
  • The established model provides a method for assessing radiation impact on electronics.
  • This research contributes to ensuring reliable spacecraft electronic operations.