Abstract: Under normal usage condition, wearing any pair of shoes especially for extended amount of time regardless of the type of shoe, makes feet sweaty and uncomfortable which potentially results in an exhausted foot. By circulating air inside a pair of shoes and around one's feet inside such shoe one can have a more hygienic/healthy and a more pleasant experience throughout the day. Exposure to fresh air not only makes feet more relaxed and comfortable it allows for less odor trapped inside such shoes due to less sweating. I have invented a means of ventilating men's, women's, or kids' shoes to remove heat and objectionable odors normally caused by sweating of one's feet inside a pair of shoes being worn, by means of circulating fresh outside air inside such pair of shoes and around one's feet wearing such shoes.

Abstract: During flight of a jet aircraft the essential steering movements, such as roll, pitch and yaw maneuvers, are normally performed via control surfaces on its wings and its tail sections. This invention allows for swiveling of jet engines mounted under wings of the jet aircraft, to direct exhaust gases upward, downward or sideways to some limited extent to achieve more agile air maneuvers compared to traditional fixed under the wing-mounted jet engines. The idea of performing more agile air maneuvers is realized by swiveling and pivoting the jet engine under the wings of the jet aircraft about a pivot point mounted along an engine nacelle to enable highly efficient pitch and roll motions in flight, as well as making efficient and agile yaw type motion in flight by swiveling and pivoting the jet engines underneath the wings.

Abstract: In the so called internal combustion (reaction type) airbreathing jet engines (including turbojets and turbofans) fast moving discharging combustion exhaust gases from core exhaust stream and air will generate jet propulsion. In other words, the produced thrust thru an exit nozzle in such engines moves the jet aircraft forward in flight. During flight of a jet aircraft the essential steering movements (roll, pitch and yaw type maneuvers) are normally performed via control surfaces on its wings and its tail sections. These controls are activated by pilot from inside the cabin.