Abstract: A method of guiding an aircraft in the final approach phase including imaging the ground using an imaging system onboard the aircraft to obtain an image, analyzing the image to detect an airport area, detecting an airport area and selecting a runway for landing, tracking the selected runway during the approach of the aircraft by visually tracking the selected runway in the image supplied by the imaging system, and tracking the runway when the aircraft is very close to the ground by analyzing the image supplied by the imaging system to determine the position of the aircraft relative to the runway.

Abstract: A method of guiding an aircraft in the final approach phase including imaging the ground using an imaging system on board the aircraft to obtain an image, analyzing the image to detect an airport area, detecting an airport area and selecting a runway for landing, tracking the selected runway during the approach of the aircraft by visually tracking the selected runway in the image supplied by the imaging system, and tracking the runway when the aircraft is very close to the ground by analyzing the image supplied by the imaging system to determine the position of the aircraft relative to the runway.

Abstract: A wire tightener or puller includes a frame with a shaft journalled between and through holes in the sides of the frame. Projections on the shaft adjacent the inside of the frame maintain the shaft in position and cam strike stops in the frame adjacent the holes cooperate with the projections to act as a ratchet precluding the shaft from rotating in one direction passed the strikes. One wire end is secured to the frame and the other to the shaft with the latter being provided with a squared or flattened end so that it may be rotated in the one direction permitted with a suitable tool to wind one end of the wire on the shaft with the projections camming over the cam strikes. The resilience of the frame permits the sides to separate slightly enabling the projections to cam over such cam strikes.