DESC:As attached ,CLAIMS:We claim:
1. A manual, table top hypersonic shock tunnel, said shock tunnel comprising:
a shock tube, said shock tube further comprising:
a driver section configured to receive and store a high pressure gas;
a driven section configured to receive and store a low pressure gas;
a primary diaphragm separating the driver section from the driven section, said primary diaphragm configured to be ruptured due to the pressure exerted thereupon by the high pressure gas;
a hand held piston plunger, said plunger configured to be pushed across the driver section thereby further pressurizing the high pressure gas contained in the driver section, and causing the primary diaphragm to rupture and causing the high pressure gas to react with at least a part of the low pressure gas, thereby creating shockwave, said shock waves compressing at least a part of the low pressure gas contained in the driven section;
a dump tank assembly, said dump tank assembly operatively coupled to the shock tube via a nozzle, said nozzle test dump assembly comprising:
a secondary diaphragm located inside said nozzle, said secondary diaphragm separating the driven section and at least a part of said nozzle thereby at least temporarily preventing the flow of compressed low pressure gas from the driven section, said secondary diaphragm configured to be ruptured as a result of pressure applied thereupon by the compressed low pressure gas, and allow the flow compressed low pressure gas; and
a dump tank maintained at a predetermined low pressure, said dump tank configured to receive the compressed low pressure gas from the nozzle and facilitate creation of hypersonic shock flows therein.
2. The hypersonic shock tunnel as claimed in claim 1, wherein said driven section further includes a pressure gauge, said pressure gauge configured to measure a pressure at which the primary diaphragm is ruptured.
3. The hypersonic shock tunnel as claimed in claim 1, wherein a predetermined number of piezo resistive pressure sensors are installed at predetermined distances from the primary diaphragm, said pressure sensors configured to measure the pressures created by the shock waves and reflections thereof.
4. The hypersonic shock tunnel as claimed in claim 1, wherein the nozzle comprises a convergent section and a divergent section, said convergent section operatively coupled to the driven section of the shock tube and said divergent section operatively coupled to the dump tank assembly.
5. The hypersonic shock tunnel as claimed in claim 1, wherein the low pressure gas contained in the driven section is compressed by the shock waves generated due to rupturing of the primary diaphragm, and further by reflections of said shock wave.
6. A method generating hypersonic shock flows in a manual, table top hypersonic shock tunnel, said method comprising the following steps:
receiving and storing a high pressure gas, in a driver section of a shock tube;
receiving and storing a low pressure gas, in a driven section of the shock tube;
separating the driver section from the driven section using a primary diaphragm, configuring said primary diaphragm to be ruptured due to the pressure exerted thereupon by the high pressure gas contained in the driver section;
pushing a handheld plunger across the driver section and further pressurizing the high pressure gas contained in the driven section;
causing the primary diaphragm to rupture and causing the high pressure gas to react with at least a part of the low pressure gas, thereby creating shockwaves;
compressing at least a part of the low pressure gas contained in the driven section, using said shock waves;
operatively coupling a dump tank assembly to the shock tube via a nozzle;
constructing a secondary diaphragm inside said nozzle, and configuring said secondary diaphragm to separate the driven section and at least a part of said nozzle thereby at least temporarily preventing the flow of compressed low pressure gas from the driven section;
further configuring said secondary diaphragm to be ruptured as a result of pressure applied thereupon by the compressed low pressure gas, and allow the flow compressed low pressure gas;
maintaining a dump tank at a predetermined low pressure, and transferring the compressed low pressure gas to the dump tank via the nozzle and creating hypersonic shock flows within the dump tank.
7. The method as claimed in claim 6, wherein the step of creating hypersonic shock flows within the dump tank further includes the step of causing a chemical reaction between the low pressure gas and vacuum of the dump tank, and generating hypersonic shock flows as a result of said chemical reaction.