SE HAN UTILIZADO CONCEPTOS SENCILLOS DE FÍSICA GENERAL Y DE TERMODINÁMICA PARA ANALIZAR EL PROBLEMA DE LA PROPULSIÓN DE UN COHETE. HACIENDO ALGUNAS SUPOSICIONES RAZONABLES SE HA ENCONTRADO UNA EXPRESIÓN PARA LA VELOCIDAD DE EXPULSIÓN DE LOS GASES QUE MUESTRA CUALES SON LAS CARACTERÍSTICAS DESEABLES DE UN BUEN COMBUSTIBLE PARA COHETES.AbstractELEMENTARY CONCEPTS FROM GENERAL PHYSICS AND THERMODYNAMICS HAVE BEEN USED TO ANALYZE ROCKET PROPULSION. MAKING SOME REASONABLE ASSUMPTIONS, AN EXPRESSION FOR THE EXIT VELOCITY OF THE GASES IS FOUND. FROM THAT EXPRESSION ONE CAN CONCLUDE WHAT ARE THE DESIRED PROPERTIES FOR A ROCKET FUEL.ELEMENTARY CONCEPTS FROM GENERAL PHYSICS AND THERMODYNAMICS HAVE BEEN USED TO ANALYZE ROCKET PROPULSION. MAKING SOME REASONABLE ASSUMPTIONS, AN EXPRESSION FOR THE EXIT VELOCITY OF THE GASES IS FOUND. FROM THAT EXPRESSION ONE CAN CONCLUDE WHAT ARE THE DESIRED PROPERTIES FOR A ROCKET FUEL.