Tower Erection System.
Abstract
The present invention is directed toward providing a system for erecting a portable antenna tower of substantial height and weight in a short time and in an adverse environment. On the top of the upper tower section, a lifting device having three liquid propellant rockets is mounted by means of four hydraulic actuators to each arm of a frame of the lifting device. A hydraulic system provides pressurized fluid to the actuators through controllable pressure regulators so that the rockets can be moved within defined limits to provide stability during the erection launch. The controllable pressure regulators of the liquid propellant rocket hydraulic system receives signals from a computer located at the base of the tower which monitors and controls the erection. A pressurized liquid propellant feed system provides fuel to the rockets during the erection launch. Further, a recovery device is attached to the frame so that after full erection, the lifting device is released from the top tower section and is lowered to the ground by a parachute so that it can be reused.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 18, 1982
- Accession Number
- ADD009777
Entities
People
- Paul A Stewart
Organizations
- United States Department of the Air Force