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The airfield was reopened for active duty on 31 March 1949 and renamed Ellington Air Force Base. The Air Force activated the 3605th Navigation School and opened a USAF navigator school, [12] with the first class entering training on 8 August 1949.
Watercraft navigation lights must permit other vessels to determine the type and relative angle of a vessel, and thus decide if there is a danger of collision. In general, sailing vessels are required to carry a green light that shines from dead ahead to 2 points (22 + 1 ⁄ 2 °) abaft [note 1] the beam on the starboard side (the right side from the perspective of someone on board facing ...
United States Coast Guard Air Station Houston is a United States Coast Guard Air Station located 15 miles (24 km) southeast of downtown Houston, Texas on board the Ellington Field Joint Reserve Base (JRB). Coast Guard Air Station (CGAS) Houston has provided an all-weather 24/7 Search & Rescue (SAR) coverage capability to the Texas and Louisiana ...
The Lone Star Flight Museum, located in Houston, Texas, is an aerospace museum that displays more than 24 historically significant aircraft, [3] and many artifacts related to the history of flight. Located at Ellington Airport , the museum is housed on about 100,000 ft 2 (10,000 m 2 ) of property, including its own airport ramp.
A "tacking duel" develops when a leading boat decides to cover a trailing boat and the trailing boat seeks to escape the disturbed air. A successful approach for the trailing boat is to tack within the area of maximally disturbed air, where the wind has the least effect on the boat's wind-caused drag ( windage ).
Two lights are positioned near one another. One, called the front light, is lower than the one behind, which is called the rear light. At night when viewed from a ship, the two lights only become aligned vertically when a vessel is positioned on the correct bearing. [3]
[6] [9] On a given sail, the net aerodynamic force on the sail is located approximately at the maximum draught intersecting the camber of the sail and passing through a plane intersecting the centre of effort, normal to the leading edge (luff), roughly perpendicular to the chord of the sail (a straight line between the leading edge (luff) and ...
The force of the sail is balanced by the force of the keel. This keeps the boat from moving in the direction of the sail force. Although total sail force is to the side when sailing into the wind, a proper angle of attack moves the boat forward. [1] Another way of stating this is as follows: The more the sail is angled from the centerline of ...