http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2218215-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_dea97595058f316a875c28a64efb90da |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01P5-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01M9-06 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01P5-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01M9-06 |
| filingDate | 1989-02-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_41d82d42d674cbac9a1c46a4cd4d1439 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d913b5d2e68f243b6e7b4e2e0df3510e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2266513f9744627ecb9a45cf2f8c6ae5 |
| publicationDate | 1989-11-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-2218215-A |
| titleOfInvention | Detecting the boundary between laminar and turbulent flow over a surface using cholesteric liquid crystal material |
| abstract | Shear stress in a fluid flow is measured by coating the surface of a body with a cholesteric liquid crystal material. The material is caused to adopt a focal conic texture state. When a fluid flow induced shear stress above a predetermined limit is applied the material changes to a Grandjean texture. This Grandjean texture is of highly iridescent colour in contrast with the opaque appearance of the focal conic texture. The observed surface pattern indicates a boundary between e.g. laminar and turbulent flow. Varying the material composition, time period of applied shear flow, and temperature, varies the boundary between the laminar and turbulent flow. An amount of particulate material, e.g. silica particles with diameters in the range 7-50 nm, may be incorporated in amounts of 1-30% or more into the cholesteric liquid crystal material to render the changes reversible. The method is used on aircraft wings. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104502056-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104502056-B |
| priorityDate | 1988-02-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 28.