| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e17ca6e5a1ed9f7ae89308afec2957a1 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B64C2027-8272
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B64C2027-8254
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B64D2045-009
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B64C2027-8281 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B64C27-82
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B64C1-40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B64C5-06 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B64C27-82
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B64C1-40 |
| filingDate |
2013-09-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ab52a84ecb381d9aff08e15ec9940a1d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3fff44d7aaffc47edc2c295ac4123da9 |
| publicationDate |
2014-03-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-2014070051-A1 |
| titleOfInvention |
Empennage of a helicopter |
| abstract |
An empennage ( 1.1 ) of a helicopter comprising a ducted counter-torque device with a multi-blade rotor ( 4 ) of rotor blades ( 3 ) and optional vertical tail fins ( 1.2 ). Flow-straightening stators ( 5 ) of stationary vanes are disposed substantially in a star configuration parallel to the rotor plane downstream from the rotor ( 4 ). A shroud ( 2.1 ) of the ducted counter-torque device is sheathed with a composite structure of an outer erosion protecting surface layer ( 7.1, 8.1 ) made of a hard plastic or a plastic composite material, and at least one succeeding layer ( 7.2, 8.2 ) of an elastomeric damping material. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11772785-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9868507-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2015307190-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2016129988-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11292593-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11174019-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11267571-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10683087-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2018105262-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2022169375-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2019016452-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10654559-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-102020201417-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10035590-B2 |
| priorityDate |
2012-09-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |