Light aircraft for short-distance takeoff and landing
US4889297A · kind A · utility
Inventor
Key dates
| Filing date | Nov 4, 1988 |
| Grant date | Dec 26, 1989 |
| Priority date | — |
| Expiry date | Nov 4, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C37/02
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A light aircraft for short distance takeoff and landing includes an airplane having a propeller provided on a rear pedestal thereof for producing vertical propulsion and an airship having a propeller provided on a rear pedestal thereof for producing vertical propulsion and also having a flight attitude sensor provided within an operating compartment thereof. The flight attitude sensor is always directed in the vertical direction, detects forward and rearward inclinations of the airship, and transmits signals corresponding to the inclinations to the two propellers, thereby rotating the two propellers to produce downward or upward propulsion to maintain the aircraft at the normal horizontal attitude at all times.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.