| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_06cdb6002986dfc4ab881b178671e6d4 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29K2505-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29K2105-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29K2995-0037
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29K2055-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F05D2230-50
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F05D2220-80 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C06B45-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C06B21-0033
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C06B21-0075
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29C64-106
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F02K9-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C06B45-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F02K9-72
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29C67-0055
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C06D5-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F02K9-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B33Y70-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B33Y80-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C06B45-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B33Y10-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C06B21-0083
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F02K9-97 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29K55-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29K105-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29K505-02 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29C67-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F02K9-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C06B21-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F02K9-72
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C06B45-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F02K9-97
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B33Y10-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B33Y70-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B33Y80-00 |
| filingDate |
2016-09-12^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2018-02-13^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2346b8705026717a7587d2eb9490709e |
| publicationDate |
2018-02-13^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-9890091-B2 |
| titleOfInvention |
Persistent vortex generating high regression rate solid fuel grain for a hybrid rocket engine and method for manufacturing same |
| abstract |
An additively manufactured solid fuel grain for a hybrid rocket engine having a cylindrical shape, defining a center combustion port and comprising a stack of fused layers of polymeric material suitable for hybrid rocket fuel. Each layer is formed as a plurality of fused abutting concentric beads of solidified material arrayed around the center port. An oxidizer is introduced into the solid fuel grain through the center port, with combustion occurring along the exposed surface area of the solid fuel grain center port wall. Each concentric bead possesses a surface pattern that increases the combustion surface area and when stacked forms a rifling pattern of undulations that induces oxidizer-fuel gas axial flow to improve combustion efficiency. The port wall surface pattern persists during the rocket engine's operation as the fuel phase changes from solid to gas and is ablated. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2020023168-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11426818-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11058977-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11506147-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10981335-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11434180-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11167375-B2 |
| priorityDate |
2007-03-22^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |