{"id":{"repo_id":"brazil-uerj","oai_identifier":"oai:pantheon.ufrj.br:11422/3597"},"canonical_url":"https://search.dev.ndltd.org/etd/brazil-uerj/oai:pantheon.ufrj.br:11422/3597","repository":{"repo_id":"brazil-uerj","name":"Brazil UERJ","base_url":"https://pantheon.ufrj.br/oai/request"},"display":{"title":"Estudo experimental de um mancal de folha","abstract":"Experimental study of an aerostatic radial foil bearing. A vertical shaft is supported axially by an air lubricated thrust bearing and radially by two foil bearings, each one made up of 3 segments of foils around the shaft, and tensioned by pulling rods. Compressed air is injected between the contact surfaces to obtain separation. Separation is measured as a function of the injected air pressure and the tension at the foils. The operation tests showed a stable performance from 2000 to 16200 rpm and total absense of contact between the foils and the shaft over 9300 rpm. Measurements of the stifness of the bearings showed values much lower than the stifness of the film of lubricant. A simple theorectical calculation of the main parameters of the bearing was made based on the conventional theory for rigid pads aerostatic bearings, showing good aproximation of experimental results.","abstract_html":"Experimental study of an aerostatic radial foil bearing. A vertical shaft is supported axially by an air lubricated thrust bearing and radially by two foil bearings, each one made up of 3 segments of foils around the shaft, and tensioned by pulling rods. Compressed air is injected between the contact surfaces to obtain separation. Separation is measured as a function of the injected air pressure and the tension at the foils. The operation tests showed a stable performance from 2000 to 16200 rpm and total absense of contact between the foils and the shaft over 9300 rpm. Measurements of the stifness of the bearings showed values much lower than the stifness of the film of lubricant. A simple theorectical calculation of the main parameters of the bearing was made based on the conventional theory for rigid pads aerostatic bearings, showing good aproximation of experimental results.","abstract_has_math":false,"creators":["Gonçalves, Sergio Exel"],"institution":"Universidade Federal do Rio de Janeiro","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Scieszko, Jan Leon"],"committee_chairs":[],"committee_members":[],"year":1979,"date_issued":"1979-12","date_published":"1979-12","updated_at":"2026-07-24T01:16:04Z","subjects":["Mancais","Lubrificação","Estudo de caso"],"languages":["por"],"rights":["Acesso Aberto"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/11422/3597","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Scieszko, Jan Leon"]},{"key":"dc:creator","label":"Author","values":["Gonçalves, Sergio Exel"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2018-02-06T17:28:35Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2026-05-16T03:04:33Z"]},{"key":"dc:date.issued","label":"Date","values":["1979-12"]},{"key":"dc:publisher","label":"Institution","values":["Universidade Federal do Rio de Janeiro"]},{"key":"dc:publisher.department","label":"Dc Publisher Department","values":["Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia"]},{"key":"dc:type","label":"Dc Type","values":["Dissertação"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Mancais","Lubrificação","Estudo de caso"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["por"]},{"key":"dc:rights","label":"Dc Rights","values":["Acesso Aberto"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/11422/3597"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Experimental study of an aerostatic radial foil bearing. A vertical shaft is supported axially by an air lubricated thrust bearing and radially by two foil bearings, each one made up of 3 segments of foils around the shaft, and tensioned by pulling rods. Compressed air is injected between the contact surfaces to obtain separation. Separation is measured as a function of the injected air pressure and the tension at the foils. The operation tests showed a stable performance from 2000 to 16200 rpm and total absense of contact between the foils and the shaft over 9300 rpm. Measurements of the stifness of the bearings showed values much lower than the stifness of the film of lubricant. A simple theorectical calculation of the main parameters of the bearing was made based on the conventional theory for rigid pads aerostatic bearings, showing good aproximation of experimental results."]},{"key":"dc:title","label":"Title","values":["Estudo experimental de um mancal de folha"]}]}],"canonical_facts":{"dc:contributor.advisor":["Scieszko, Jan Leon"],"dc:creator":["Gonçalves, Sergio Exel"],"dc:date.accessioned":["2018-02-06T17:28:35Z"],"dc:date.available":["2026-05-16T03:04:33Z"],"dc:date.issued":["1979-12"],"dc:description.abstract":["Experimental study of an aerostatic radial foil bearing. A vertical shaft is supported axially by an air lubricated thrust bearing and radially by two foil bearings, each one made up of 3 segments of foils around the shaft, and tensioned by pulling rods. Compressed air is injected between the contact surfaces to obtain separation. Separation is measured as a function of the injected air pressure and the tension at the foils. The operation tests showed a stable performance from 2000 to 16200 rpm and total absense of contact between the foils and the shaft over 9300 rpm. Measurements of the stifness of the bearings showed values much lower than the stifness of the film of lubricant. A simple theorectical calculation of the main parameters of the bearing was made based on the conventional theory for rigid pads aerostatic bearings, showing good aproximation of experimental results."],"dc:identifier.uri":["http://hdl.handle.net/11422/3597"],"dc:language":["por"],"dc:publisher":["Universidade Federal do Rio de Janeiro"],"dc:publisher.department":["Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia"],"dc:rights":["Acesso Aberto"],"dc:subject":["Mancais","Lubrificação","Estudo de caso"],"dc:title":["Estudo experimental de um mancal de folha"],"dc:type":["Dissertação"]},"updated_at":"2026-07-24T01:16:04Z"}