Abstract: An airplane having a number of airfoils including a delta nose wing, a winglet, a midspan wing, a V-tail delta wing without an upswept fuselage, a vertical tail and upper body stabilizer. These airfoils are coupled with a system of four jet engines and an aft center of gravity. Full control of the airplane is possible under high maneuverability conditions, extremely high accelerations and at large angles of attack. The delta nose wing creates swirling vortices that contribute substantially to the lift of the nose section. The winglet, an extension of the delta nose wing, allows the turbulent wake from the leading edge of the delta nose wing to flow over its upper surface to create additional lift while the midspan wing causes the turbulent flow over its upper surface to form a turbulent wake at its leading edge. The V-tail delta wing with a V-shaped underside and blunt leading edge gives additional lift and control to the airplane.

Abstract: A versatile feeding system for use by infants and children in which liquid from a bottle is either fed out of the bottle through an adapter, through the improved nipple and into the mouth of the infant or child; or liquid from the bottle is fed out of the bottle through the adapter, through a flexible tube, and into and through a nipple assembly which is adapted to be placed in the mouth of the infant or child.The adapter includes a pair of halves which are held in place in the open top of the bottle by a screw cap, each half including a flow regulator of resilient material having slits therein which open or close due to suction pressure, and at least one flow restrictor having slots therein for controlling the volume rate of flow of liquid through the adapter. The elongation and deformation of the regulator is controlled by two reducers in one half housing and by one reducer in the other half housing, each reducer has a centrally located hole beveled on one side.