Subsonic and Stationary Ramjet Engines

The introduction of a choke-area-free supersonic to subsonic converter in the ramjet engine design addresses the coordination challenges and speed limitations of traditional ramjet engines, enabling efficient subsonic operation and mechanical power generation, thereby enhancing energy utilization and commercial viability.
US20110083420A1Inactive Publication Date: 2011-04-14AMICABLE INVENTIONS LLC
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
AMICABLE INVENTIONS LLC
Publication Date
2011-04-14
Estimated Expiration
Not applicable · inactive patent
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Abstract

A ramjet engine (3, 4, 5), flying at Mach 3 has 64% efficiency, and at Mach 4 has 76% efficiency. Ramjet engines are currently only used for supersonic flight and have not been used as stationary engines with mechanical output. The present invention, in addition to subsonic flight, can be operated as a stationary engine, and can expand the use of the ramjet engine for mechanical output in vehicles, power plants, and in generator sets for large buildings, homes, and industry. The present invention provides the means to use ramjet engines as stationary engines by building nearly adiabatic compressors (1, 2, 12, 13, 14, 15) and expanders (6, 7, 8, 9, 10, 11) capable of (de-)compression ratios up to about 92:1 to supply the high energy gas / air required by ramjet engines, and shows how to replace de Laval nozzles with sonic converters (49, 50, 51) that convert supersonic to subsonic flow and sonic convertors (45, 46, 47) that convert subsonic to supersonic flow without having choke areas.
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Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application relies on the disclosure and claims the benefit of the filing date of U.S. Provisional Application No. 61 / 039,406 filed Mar. 25, 2008, the disclosure of which is hereby incorporated by reference in its entirety.BACKGROUND OF THE INVENTION

[0002] 1. Field of the Invention

[0003] This invention relates to the field of power plants. More particularly, the present invention relates to devices and methods used in the field of heat engines for various applications including mechanical drives. Embodiments of the present invention provide subsonic and stationary ramjet engines.

[0004] 2. Description of the Related Art

[0005] To conserve fossil fuels and reduce the worldwide production of carbon dioxide, CO2, the most effective method is to increase the efficiency of automobile engines and other fuel burning engines. The efficiency of the average automobile engine on the road in the United States is approximately 21%. An automobile engine...

Claims

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