Thesis etd-10302019-131357 |
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Thesis type
Tesi di laurea magistrale
Author
MARTINO, LIVIA FELICIA
URN
etd-10302019-131357
Thesis title
Nonlinear dynamic modelling of Fault-tolerant mechanical transmissions in EMA for aircraft landing gears
Department
INGEGNERIA CIVILE E INDUSTRIALE
Course of study
INGEGNERIA AEROSPAZIALE
Supervisors
relatore Prof. Di Rito, Gianpietro
Keywords
- aircraft
- backlash modelling
- EMA
- fault-tolerant
- friction modelling
- landing gear
- mechanical transmission
- nonlinear model
Graduation session start date
26/11/2019
Availability
Withheld
Release date
26/11/2089
Summary
This work deals with the modelling of the EMA's mechanical transmission for aircraft landing gears, pointing out the effects of nonliearities -such as friction and backlash- on the dynamic performances.
The design and development of electro mechanic actuators are leaded by the neces-sity of cheaper and greener tecnologies. Despite the advantage of having a better efficiency and a minor maintenance respect the hydraulic solution, among the issues of an electro mechanical actuator there is the necessity of increase the electric power generated on board, the needof Energy Managment logics and the need to by pass new failure modes, as the ”Jamming” one, for a correct certification.
The design and development of electro mechanic actuators are leaded by the neces-sity of cheaper and greener tecnologies. Despite the advantage of having a better efficiency and a minor maintenance respect the hydraulic solution, among the issues of an electro mechanical actuator there is the necessity of increase the electric power generated on board, the needof Energy Managment logics and the need to by pass new failure modes, as the ”Jamming” one, for a correct certification.
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