| Predicate |
Object |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B64G1-428
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B64G1-405
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F03H1-0018
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F03H1-0043 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B64G1-40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B64G1-42 |
| filingDate |
2001-12-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b2f65c8019b761b95cfdaa5d7cdf3b01
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bde705a0eeff897e5eb3bf481422323f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e2bef96e91fd1a23a6c073f279b9cfb1 |
| publicationDate |
2003-06-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-2003102402-A1 |
| titleOfInvention |
Automatic accel voltage tracking system for an ion thruster |
| abstract |
A voltage tracking system for an ion thruster includes a discharge chamber, a screen grid, an accelerator grid, and an accelerator grid voltage controller. The discharge chamber contains plasma at a given potential. The screen grid is adjacent to the discharge chamber and is voltage biased relative to the plasma to form a plasma sheath that repels electrons and attracts ions from the discharge chamber plasma. The accelerator grid is adjacent to the screen grid and has a voltage for accelerating the ions to create thrust and prevent any electrons from backstreaming into the ion thruster from the beam plasma. The accelerator grid voltage controller supplies voltage to the accelerator grid. The accelerator grid voltage controller adjusts the magnitude of the accelerator grid voltage to minimize the amount of voltage required to prevent electron backstreaming into the ion thruster. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105097407-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2008009938-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114329919-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2009308049-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2006075739-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-115967065-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108535607-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7269940-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9695292-B2 |
| priorityDate |
2001-12-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |