Abstract: ABSTRACT A miniature tabletop hypersonic shock tunnel that generates hypersonic flows using manual force is disclosed. The table top hypersonic shock tunnel includes a shock tube and a nozzle-test section-dump tank assembly. A predetermined pressure is set for a test gas in a driven section of the shock tube and the dump tank is evacuated to attain a low pressure. A hand held piston plunger is placed inside the driver section and is moved towards the primary diaphragm of the shock tube. The movement of the hand held piston plunger in the driver section increases the pressure of the driver gas and ruptures primary diaphragm generating a shock wave inside the shock tube. The resultant shock wave further travels through the test gas in the driven tube and ruptures a secondary diaphragm by expanding gas through the dump tank. FIG.2
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.
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.
| # | Name | Date |
|---|---|---|
| 1 | 3592-CHE-2015 POWER OF ATTORNEY 14-07-2015.pdf | 2015-07-14 |
| 1 | 3592-CHE-2015-FORM 4 [24-07-2024(online)].pdf | 2024-07-24 |
| 2 | 3592-CHE-2015 FORM-5 14-07-2015.pdf | 2015-07-14 |
| 2 | 3592-CHE-2015-IntimationOfGrant28-02-2024.pdf | 2024-02-28 |
| 3 | 3592-CHE-2015-PatentCertificate28-02-2024.pdf | 2024-02-28 |
| 3 | 3592-CHE-2015 FORM-28 14-07-2015.pdf | 2015-07-14 |
| 4 | 3592-CHE-2015-PETITION UNDER RULE 137 [16-02-2024(online)].pdf | 2024-02-16 |
| 4 | 3592-CHE-2015 FORM-2 14-07-2015.pdf | 2015-07-14 |
| 5 | 3592-CHE-2015-RELEVANT DOCUMENTS [16-02-2024(online)].pdf | 2024-02-16 |
| 5 | 3592-CHE-2015 FORM-1 14-07-2015.pdf | 2015-07-14 |
| 6 | 3592-CHE-2015-Correspondence to notify the Controller [09-02-2024(online)].pdf | 2024-02-09 |
| 6 | 3592-CHE-2015 DRAWINGS 14-07-2015.pdf | 2015-07-14 |
| 7 | 3592-CHE-2015-US(14)-HearingNotice-(HearingDate-12-02-2024).pdf | 2024-02-06 |
| 7 | 3592-CHE-2015 DESCRIPTION (PROVISIONAL) 14-07-2015.pdf | 2015-07-14 |
| 8 | 3592-CHE-2015-ABSTRACT [25-01-2022(online)].pdf | 2022-01-25 |
| 8 | 3592-CHE-2015 CORRESPONDENCE OTHERS 14-07-2015.pdf | 2015-07-14 |
| 9 | 3592-CHE-2015-CLAIMS [25-01-2022(online)].pdf | 2022-01-25 |
| 9 | OTHERS [10-08-2016(online)].pdf | 2016-08-10 |
| 10 | 3592-CHE-2015-COMPLETE SPECIFICATION [25-01-2022(online)].pdf | 2022-01-25 |
| 10 | Drawing [10-08-2016(online)].pdf | 2016-08-10 |
| 11 | 3592-CHE-2015-CORRESPONDENCE [25-01-2022(online)].pdf | 2022-01-25 |
| 11 | Description(Complete) [10-08-2016(online)].pdf | 2016-08-10 |
| 12 | 3592-CHE-2015 FORM-28.pdf | 2016-09-02 |
| 12 | 3592-CHE-2015-DRAWING [25-01-2022(online)].pdf | 2022-01-25 |
| 13 | 3592-CHE-2015-ENDORSEMENT BY INVENTORS [25-01-2022(online)].pdf | 2022-01-25 |
| 13 | Form-2(Online).pdf | 2016-09-29 |
| 14 | 3592-CHE-2015-FER_SER_REPLY [25-01-2022(online)].pdf | 2022-01-25 |
| 14 | 3592-CHE-2015-FORM 18 [05-04-2019(online)].pdf | 2019-04-05 |
| 15 | 3592-CHE-2015-FORM 3 [01-08-2019(online)].pdf | 2019-08-01 |
| 15 | 3592-CHE-2015-FORM 3 [25-01-2022(online)].pdf | 2022-01-25 |
| 16 | 3592-CHE-2015-FER.pdf | 2021-10-17 |
| 16 | 3592-CHE-2015-OTHERS [25-01-2022(online)].pdf | 2022-01-25 |
| 17 | 3592-CHE-2015-Proof of Right [25-01-2022(online)].pdf | 2022-01-25 |
| 18 | 3592-CHE-2015-OTHERS [25-01-2022(online)].pdf | 2022-01-25 |
| 18 | 3592-CHE-2015-FER.pdf | 2021-10-17 |
| 19 | 3592-CHE-2015-FORM 3 [01-08-2019(online)].pdf | 2019-08-01 |
| 19 | 3592-CHE-2015-FORM 3 [25-01-2022(online)].pdf | 2022-01-25 |
| 20 | 3592-CHE-2015-FER_SER_REPLY [25-01-2022(online)].pdf | 2022-01-25 |
| 20 | 3592-CHE-2015-FORM 18 [05-04-2019(online)].pdf | 2019-04-05 |
| 21 | 3592-CHE-2015-ENDORSEMENT BY INVENTORS [25-01-2022(online)].pdf | 2022-01-25 |
| 21 | Form-2(Online).pdf | 2016-09-29 |
| 22 | 3592-CHE-2015 FORM-28.pdf | 2016-09-02 |
| 22 | 3592-CHE-2015-DRAWING [25-01-2022(online)].pdf | 2022-01-25 |
| 23 | 3592-CHE-2015-CORRESPONDENCE [25-01-2022(online)].pdf | 2022-01-25 |
| 23 | Description(Complete) [10-08-2016(online)].pdf | 2016-08-10 |
| 24 | Drawing [10-08-2016(online)].pdf | 2016-08-10 |
| 24 | 3592-CHE-2015-COMPLETE SPECIFICATION [25-01-2022(online)].pdf | 2022-01-25 |
| 25 | 3592-CHE-2015-CLAIMS [25-01-2022(online)].pdf | 2022-01-25 |
| 25 | OTHERS [10-08-2016(online)].pdf | 2016-08-10 |
| 26 | 3592-CHE-2015 CORRESPONDENCE OTHERS 14-07-2015.pdf | 2015-07-14 |
| 26 | 3592-CHE-2015-ABSTRACT [25-01-2022(online)].pdf | 2022-01-25 |
| 27 | 3592-CHE-2015 DESCRIPTION (PROVISIONAL) 14-07-2015.pdf | 2015-07-14 |
| 27 | 3592-CHE-2015-US(14)-HearingNotice-(HearingDate-12-02-2024).pdf | 2024-02-06 |
| 28 | 3592-CHE-2015 DRAWINGS 14-07-2015.pdf | 2015-07-14 |
| 28 | 3592-CHE-2015-Correspondence to notify the Controller [09-02-2024(online)].pdf | 2024-02-09 |
| 29 | 3592-CHE-2015 FORM-1 14-07-2015.pdf | 2015-07-14 |
| 29 | 3592-CHE-2015-RELEVANT DOCUMENTS [16-02-2024(online)].pdf | 2024-02-16 |
| 30 | 3592-CHE-2015 FORM-2 14-07-2015.pdf | 2015-07-14 |
| 30 | 3592-CHE-2015-PETITION UNDER RULE 137 [16-02-2024(online)].pdf | 2024-02-16 |
| 31 | 3592-CHE-2015-PatentCertificate28-02-2024.pdf | 2024-02-28 |
| 31 | 3592-CHE-2015 FORM-28 14-07-2015.pdf | 2015-07-14 |
| 32 | 3592-CHE-2015-IntimationOfGrant28-02-2024.pdf | 2024-02-28 |
| 32 | 3592-CHE-2015 FORM-5 14-07-2015.pdf | 2015-07-14 |
| 33 | 3592-CHE-2015-FORM 4 [24-07-2024(online)].pdf | 2024-07-24 |
| 33 | 3592-CHE-2015 POWER OF ATTORNEY 14-07-2015.pdf | 2015-07-14 |
| 34 | 3592-CHE-2015-FORM FOR SMALL ENTITY [22-11-2024(online)].pdf | 2024-11-22 |
| 35 | 3592-CHE-2015-EVIDENCE FOR REGISTRATION UNDER SSI [22-11-2024(online)].pdf | 2024-11-22 |
| 1 | XYdescriptionE_16-04-2021.pdf |