How to use in-sentence of “black powder”:
– A simple way of combining the parts to make black powder rocket propellant is: 75% potassium nitrate, 10% sulphur, and 15% charcoal.
– It also ended the use of black powder for big rockets.
– Because they did not kill large animals very easily, elephant guns were soon made into larger caliber black powder smoothbores.
– The impulse of a black powder motor is used to tell what size class it is in.
– But in modern use the term most commonly applies to black powder small arms.
– The specific impulse for model rocket motors is much lower than for many other rocket motors because the black powder is used as a fuel.
