Aerodynamic forces on flight crew helmets

Flight Crew Decision- Making

Effect of forewing and hindwing interactions on aerodynamic forces and power in hovering dragonfly flight.

Dragonflies are four-winged insects that have the ability to control aerodynamic performance by modulating the phase lag (phi) between forewings and hindwings. We film the wing motion of a tethered dragonfly and compute the aerodynamic force and power as a function of the phase. We find that the out-of-phase motion as seen in steady hovering uses nearly minimal power to generate the required fo...

Developing the Job Stress Model for Airlines Flight crew

Job is one of the most important issues in the discussion of human resources, and since the discussion of job stress in the flight crew and its relationship with the performance of the flight crew is very important and vital. This research is about recognizing and developing a model for job stress among the cabin crew of Mahan Airline. The qualitative research methodology has been followed by q...

Aerodynamic Forces Acting on Valve Discs

Aerodynamic performance in bat flight

Bats are the only mammals capable of flight, and they are the only animal flyers that are mammals. This thesis focuses on the latter of those facts, and investigates how bats fly, from an aerodynamic perspective. The data on which this thesis is based were generated by examining the airflows beneath and behind bats flying in a wind tunnel, and by examining their wing kinematics manually and aut...