Fountain them. By the end of the 19th century, as indoor plumbing became the main source of drinking water, urban fountains became purely decorative. Mechanical pumps replaced gravity and allowed fountains to recycle water and to force it high into the air. The Jet d'Eau in Lake Geneva, built in 1951, shoots water in the air. The highest such fountain in the world is King Fahd's Fountain in Jeddah, Saudi Arabia, which spouts water above the Red Sea. Fountains are used today to decorate city parks and squares; to honor individuals or events; for recreation and for entertainment. A Splash pad
Diamond D-Jet 61-knot maximum stall speed certification required by any single-engine aircraft. These flaps, which resulted in no meaningful pitch changes during retraction or extension, were designed to ease their usage. The avionics of the D-JET comprise a Garmin G1000 glass cockpit, the large multi-function display of which taking center-place on the cockpit dashboard, akin to aircraft such as the Cessna Mustang. For de-icing purposes, Diamond opted for pneumatic boots on the wing's leading edges, bleed air for heating the inlets and ducts, and electric heating for the windshields and probes; in particular, Goodrich developed a considerably thinner de-icing system for the