When an engine is ignited, it produces thrust and boosts the rocket into the sky. After the propellant is used up, delay is activated, producing tracking smoke and allowing the rocket a brief coast.
infirmary (plural infirmaries) 1  A place where sick or injured people are cared for, especially a small hospital; sickhouse. 2  A clinic or dispensary within another institution.
A urinary tract infection, or UTI, is an infection of any part of the urinary system, the group of organs that removes water and waste products from the blood.About 95 percent of UTIs involve the lower urinary tract.This includes the bladder (the organ that collects and holds urine) and the urethra (the tube through which urine exits the body). Lower urinary tract infections are also called cystitis. They can be quite painful, but usually don't cause permanent damage.bout 95 percent of UTIs involve the lower urinary tract. This includes the bladder (the organ that collects and holds urine) and the urethra (the tube through which urine exits the body). Lower urinary tract infections are also called cystitis. They can be quite painful, but usually don't cause permanent damage.