Patent · US Expired

Airplane, preferably a helicopter

US4830312A · kind A · utility

20Cited by

6References

19Claims

0Family size

Assignee

Dr. Ine. h.c. F. Porsche Aktiengesellschaft · DE

Inventors

Klaus Hain · Leonberg, DE
August Hofbauer · Pforzheim, DE
Manfred Hochkonig · Asperg, DE

Key dates

Filing date	Mar 18, 1988
Grant date	May 16, 1989
Priority date	—
Expiry date	Mar 18, 2008

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02B75/243
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A helicopter is driven by means of a rotor that is connected with an internal-combustion engine. The air-cooled internal-combustion engine has a horizontally opposed construction and is arranged within walls of a cabin of the helicopter. In order to supply the internal-combustion engine with cooling air and intake air, air inlet openings are provided at the side walls of the cabin. For the discharge of the cooling air, outlet openings are arranged at the underside of the cabin.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.