Aircraft arresting system
US5042750A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 16, 1989 |
| Grant date | Aug 27, 1991 |
| Priority date | — |
| Expiry date | Nov 16, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64F1/029
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An apparatus for controlling the rate of deceleration of a moving body. The apparatus has a cable or net for engaging a moving body and tape connected to the cable or net. The tape is wound onto a reel at the start of a deceleration and is unwindable from the reel during the deceleration so that unwinding the tape from the reel causes a corresponding rotation of the reel. A pump is operatively connected to the reel so that rotation of the reel causes pumping of a hydraulic fluid at a rate which increases as the rate of rotation of the reel increases. A control valve disposed across the discharge of the pump varies pressure drop across the control valve. A brake is provided for applying a braking force to the reel, and an actuator is provided for varying the braking force applied by the braking means in response to the pressure drop. A signal representative of the total linear length L that the tape has been unwound from the reel from the start of the deceleration to a particular time and the linear velocity V of the tape at that time are generated continuously or at frequent intervals during a deceleration. The actual flow rate FA through the control valve is also measured. A compu…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.