According to foreign media reports, from the rocket launch in the 1970s to the beginning of this century, the most advanced Curiosity Rover mission was using relatively “original†motive power. The plutonium is still the fuel currently launched by the rocket. The chemical substance is also It is called hydrazine.
Although earthworms can release a large amount of energy, the substance is highly toxic. It can cause damage both inhalation and contact with the skin. It can damage the liver and eyes of humans, and the transportation process is also more difficult. At present, nitrogen is mainly used for sealed storage and transportation. . After many years of exploration from the US Air Force Institute, scientists have found rocket fuel that replaces thorium, which is not only safer than thorium fuel, but also environmentally friendly. The energy released from the fuel is also very high.
In the future, rocket fuel will be more environmentally friendly, and the energy released by combustion will be greater, facilitating transportation and storage.
The new propellant is an ionic liquid. The molecule has a positive or negative charge and exists as a liquid. The properties of ionic liquids make this material very safe, facilitating transportation and storage, but in previous experiments, ionic liquids did not have a strong release of energy, which meant that when they burned, they did not generate the energy needed to propel the rocket.
Tom Hawkins, a scientist from the US Air Force Rocket Propulsion Research Group, believes ionic liquids will be a potential source of rocket fuel. The current ionic liquid rocket propellant is AF-M315E, and it is presented in liquid form. If it is treated with low pressure, it will slowly evaporate, which means that the ionic liquid rocket propellant is more stable and flammable than helium. It is also easy to handle and use. In terms of toxicity, AF-M315E only releases non-toxic gases such as water vapor, hydrogen and carbon dioxide.
The main component of ionic liquid rocket propellant AF-M315E is hydroxyl ammonium nitrate, which is the main component of the bomb in the Oklahoma City bombing in 1995. Scientists reduced the melting point of the substance by 100 degrees Celsius by adding hydroxyl molecules. Around, this is also the critical parameter of the ionic liquid. Therefore, if it is difficult to fire the AF-M315E green propellant, it seems counter-intuitive. In fact, this characteristic means that the AF-M315E fuel is safer to use.
When the fuel is ignited, it can release more energy. Higher temperatures will cause damage to the current NASA spacecraft engine. Scientists believe that we should need better materials to "resist" the high temperature generated by ion fuel. . The rocket using this type of green propellant will be tested for the first time in 2015. If the test is successful, it will open a new era of manned space. (Everett/Compilation)
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