JPH09250396A - Jet propulsion device of intermittent type - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure an intermittent combustion to thereby improve fuel consumption by leading high pressure generated by the instantaneous combustion of fuel in a specified volume heating combustion chamber to a constant pressure heating combustion chamber, then heating it further by a combustion unit for heating, and jetting it out as high speed fluid gas. SOLUTION: Compression air and fuel taken in a constant volume heating combustion chamber 5 through a fuel intake opening and closing valve 2 and an opening and closing valve for taking in and scavenging compression air is ignited by an ignition plug 1, and then instantaneously combusted, whereby the air fuel mixture is turned into a high temp. and high pressure operation fluid gas while generating high pressure for compression. The gas is introduced into a constant pressure heating combustion chamber 9 via a fluid opening and closing valve 6. The introduced gas is further heated by a combustion unit for heating 7 and jetted rearward at high speed through a combustion gas injection nozzle 10 to thereby generate a propulsion power.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intermittent jet propulsion device having a constant volume heating combustion chamber for compressing a working fluid.

[0002]

2. Description of the Related Art As a conventional jet propulsion apparatus, a gas turbine type jet propulsion apparatus of a continuous compression heating type has been known.

[0003]

In the conventional jet propulsion device, a part of the output is spent for air compression, the output loss is large, and the output is synergistically reduced at low speed. Had.

[0004]

In order to solve the above problems, the present invention provides a constant pressure heating combustion chamber (5), a fluid on-off valve (6), and a heating combustor (7). The heating and combustion chamber (9) and the like are provided.

[0005]

The compressed air and fuel sucked into the constant volume heating and combustion chamber (5) are ignited by the spark plug (1) and instantaneously burned to generate high pressure for compression, and high temperature and high pressure working fluid gas. Then, it is introduced into the constant pressure heating combustion chamber (9) through the fluid on-off valve (6). The introduced working fluid gas is further heated by the heating combustor (7), and is injected at high speed rearward through the combustion gas injection nozzle (10). Therefore, the propulsive power can be continuously generated by cyclically performing the above-described steps.

[0006]

Embodiments will be described with reference to the drawings.
In FIG. 1, compressed air sucked from the compressed air intake / scavenging on / off valve (3) is supplied to the compressed air from the fuel intake on / off valve (2).
Fuel is injected, ignited by the spark plug (1), instantaneously burned in the constant volume heating combustion chamber (5), and the working fluid compressed at high pressure by the generated high pressure is used as a fluid on-off valve (6). Through the constant pressure heating combustion chamber (9), heating combustor (7)
By further heating, the combustion gas injection nozzle (10) produces high-speed fluid gas, and by injecting it backward, propulsion power is obtained in a cycle.

[0007]

Since the present invention is configured as described above, it has the following effects.

Since the high pressure generated by the instantaneous combustion of fuel in the constant volume heating combustion chamber is used for compressing the working fluid, a high output can be easily obtained.

Moreover, since the combustion is intermittent, the twisting cost is low, and the structure is simple, so there are few failures and the manufacturing cost can be reduced.

When natural gas, hydrogen, etc. are used as the fuel, an environment-friendly high-thermal-efficiency jet propulsion device can be obtained, and thrust is increased by symmetrically mounting a plurality of jet propulsion devices. be able to.

[Brief description of drawings]

FIG. 1 is a front view, in half section, of an intermittent jet propulsion device.

[Explanation of symbols]

 1 Spark Plug 2 Fuel Intake Open / Close Valve 3 Compressed Air Intake / Scavenging Open / Close Valve 4 Safety Valve 5 Constant Volume Combustion Chamber 6 Fluid On / Off Valve 7 Heating Combustor 8 Engine Support Leg 9 Constant Pressure Heating Combustion Chamber 10 Combustion Gas Injection Nozzle

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[Procedure amendment]

[Submission date] April 3, 1996

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] Fig. 1

[Correction method] Change

[Correction contents]

FIG. ─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] July 29, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Brief description of drawings

[Correction method] Added

[Correction contents]

[Brief description of drawings]

FIG. 1 is a front view, in half section, of an intermittent jet propulsion device.

[Explanation of symbols] 1 spark plug 2 fuel intake / opening valve 3 compressed air intake / scavenging on / off valve 4 safety valve 5 constant volume heating combustion chamber 6 fluid opening / closing valve 7 heating combustor 8 engine support leg 9 constant pressure heating combustion chamber 10 Combustion gas injection nozzle 11 Scavenging on-off valve 12 Rotation actuator

[Procedure amendment 2]

[Document name to be amended] Drawing

[Correction target item name] Fig. 1

[Correction method] Change

[Correction contents]

FIG.

Claims (1)

[Claims] 1. A fluid on-off valve comprising a constant volume combustion chamber (5) having an ignition plug (1), an on-off valve for fuel intake (2), and an on-off valve for compressed air intake / scavenging (3). An intermittent jet propulsion device having (6), a constant pressure heating combustion chamber (9) to which a heating combustor (7) is attached, and a combustion gas injection nozzle (10).