NOVELTY - Forming vegetable oils (triglycerides) for powering jet engines, where oils are made of 18C and triglyceride is built from C/H/O, and is made of 3C joined to oneself with single bonds, and every carbon is combined with single bonds with H on one side and with O on other, and its characteristic that 'outermost', four-value carbons are connected with H, while centre three-value C with one H, every carbon, through O, is connected with next four-value carbon, making triglyceride twig base, involves holding oil at -14 to 120 degrees C; and before injecting directly into engine, heating at 285-350 degrees C.    USE - For preparing vegetable oils (triglycerides) for powering jet engines (claimed) used in civilian and military applications.    ADVANTAGE - The heating at 285 degrees C temperature causes neither evaporation nor ignition of vegetable oils as a result the fuel is perfect for powering jet engines. The vegetable oils (triglycerides) are non-inflammable and aren't evaporating to the +285 degrees C temperature, which is a desired phenomenon, because in the case of the disaster they won't cause ignition of vegetable oils (triglycerides), because they are evaporating and they are ignited above the +285 degrees C temperature. As the oils can be heated in the containers of aeroplanes in the optimal scope of temperatures of -14 to +120 degrees C, the jet engine can work in lower temperatures than powered with typical JET 1 or JET 2 kerosene. The jet aeroplane powered with vegetable oils (triglycerides) can fly irrespective of how the surrounding temperature is low. The jet engines powered with the vegetable oils exhibits safety during the start and landing, as well as during the flight and reduces operating costs of powered jet aircraft, because at maximum heights there is such considerable thinning of air, that there are minimum resistances of the flight and therefore the sound barrier is moved, which means, that the aeroplane can fly with the speed above 1000 km/hour without crossing the sound barrier. The engines of jet aircraft powered with vegetable oils (triglycerides) works at maximum heights, where the minimum amount of oxygen essential to combustion process is appearing i.e. about 30000 m above sea level and fly with the speed repeatedly higher than 1000 km/hour, in addition not to cross the sound barrier (air considerably thinned down), which is giving the gigantic advantage of the height over classical jet aircrafts. The vegetable oils (triglycerides) are ecological fuel, biodegradable, very difficult-combustible in the surrounding temperature (a wick is needed), which is safe in the scope of fire-fighting and anti-explosive, very much desired for economical accounts.    DETAILED DESCRIPTION - Preparing vegetable oils (triglycerides) for powering jet engines, where vegetable oils (triglycerides) are made of 18C and molecule of triglyceride is built from carbon, hydrogen and oxygen, and in addition triglyceride is made of three carbon atoms joined to oneself with single bonds, and every carbon atom is combined with single bonds with a hydrogen atom on one side and with atoms of oxygen on the other, and in addition its characteristic, that 'outermost', four-value carbon atoms are connected with hydrogen atoms, while centre, three-value carbon atom with one hydrogen atom, every carbon atom, through oxygen atoms, is connected with next four-value carbon atom, making the base of the triglyceride twig, and four-value carbon atoms are connected through single bonds with the oxygen atom (and backwards with carbon atoms) through double connection with different atoms of oxygen and through the single bond with so-called radical, which is a simple hydrocarbon chain characteristic, involves holding vegetable oil intended for powering the jet engine at a temperature range in an optimal way of -14 to +120 degrees C; and before injecting directly into the jet engine, heating it at a temperature range in an optimal way of 285 to 350 degrees C.