Video Experimental Relacionado
Updated: Oct 13, 2025
12:22
Optimization, Test and Diagnostics of Miniaturized Hall Thrusters
Published on: February 16, 2019
9.1K
Demostración en órbita de un sistema de propulsión eléctrica de yodo
Dmytro Rafalskyi1, Javier Martínez Martínez1, Lui Habl1,2
1ThrustMe, Verrières-le-Buisson, France.
Nature
|November 18, 2021
Resumen
Este estudio presenta un sistema de propulsión eléctrica alimentado con yodo para naves espaciales. Las pruebas en órbita confirman su eficacia, ofreciendo una alternativa más barata y accesible a los propulsores de xenón tradicionales.
Área de la Ciencia:
- Sistemas de propulsión de naves espaciales
- Física del plasma y propulsión eléctrica
Sus antecedentes:
- La propulsión eléctrica ofrece un uso eficiente del propulsor.
- El xenón es el propulsor estándar, pero es raro y caro.
- Se necesitan propulsores alternativos para las misiones espaciales avanzadas.
Objetivo del estudio:
- Para demostrar un nuevo sistema de propulsión de naves espaciales usando yodo.
- Presentar datos de rendimiento en órbita para un propulsor eléctrico basado en yodo.
- Evaluar el yodo como una alternativa viable al propulsor de xenón.
Principales métodos:
- El propulsor de yodo se almacena como un sólido y sublimado.
- El plasma se genera utilizando una antena inductiva de radiofrecuencia para la ionización.
- Los iones de yodo (atómicos y moleculares) se aceleran utilizando redes de alto voltaje.
Principales resultados:
- El sistema de propulsión de yodo fue operado con éxito en el espacio en un pequeño satélite.
- Se encontró que la eficiencia de ionización se mejoró en comparación con el xenón.
- Se logró un haz de iones altamente colimado con una disociación significativa de yodo.
Conclusiones:
- El yodo es un prometedor propulsor alternativo para propulsión eléctrica.
- Esta tecnología permite la miniaturización y simplificación del sistema para satélites pequeños.
- El yodo facilita nuevas capacidades para las constelaciones de satélites y la exploración espacial.
Videos de Conceptos Relacionados
01:20Rocket Propulsion in Gravitational Field - I
2.9K
Rockets range in size from small fireworks that ordinary people use to the enormous Saturn V that once propelled massive payloads toward the Moon. The propulsion of all rockets, jet engines, deflating balloons, and even squids and octopuses are explained by the same physical principle: Newton's third law of motion. The matter is forcefully ejected from a system, producing an equal and opposite reaction on what remains.
The motion of a rocket in space changes its velocity (and hence its...
The motion of a rocket in space changes its velocity (and hence its...
2.9K
01:13Rocket Propulsion in Empty Space - I
3.3K
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...
3.3K
01:03Rocket Propulsion in Gravitational Field - II
2.4K
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.
A rocket's acceleration depends on three major factors, consistent with the...
A rocket's acceleration depends on three major factors, consistent with the...
2.4K
01:23Redox Titration: Iodimetry and Iodometry
3.2K
Iodometry and iodimetry are analytical methods used to determine the concentration of oxidizing or reducing agents using iodine. In iodometric titrations, the oxidizing analyte solution is usually acidified and treated with an excess of iodide ions, which generates an equivalent amount of iodine in equilibrium with triiodide. The released iodine is subsequently titrated directly against a standardized reducing agent. As the dilute iodine color becomes pale yellow, a few drops of freshly...
3.2K
01:23Faraday Disk Dynamo
2.7K
A Faraday disk dynamo is a DC generator, producing an emf that is constant in time. It consists of a conducting disk that rotates with a constant angular velocity in the magnetic field, perpendicular to the disk's plane. The rotation of the disk causes a change in magnetic flux, which induces an emf, causing opposite charges to develop on the rim and in the center of the disk. The polarity of the induced emf can be determined by the direction of the magnetic field and the direction of the...
2.7K
01:12Rocket Propulsion In Empty Space - II
3.1K
The motion of a rocket is governed by the conservation of momentum principle. A rocket's momentum changes by the same amount (with the opposite sign) as the ejected gases. As time goes by, the rocket's mass (which includes the mass of the remaining fuel) continuously decreases, and its velocity increases. Therefore, the principle of conservation of momentum is used to explain the dynamics of a rocket's motion. The ideal rocket equation gives the change in velocity that a rocket...
3.1K