Aerospace

Deicing system advances by ice accretion modeling

Ice accretion on aircraft can cause major problems including loss of lift and incorrect measurements of flight speed. In the past, these events have in some cases led to aircraft crashing. While numerous anti-icing and de-icing technologies exist, each system currently available is unable to achieve all the properties that aircraft designers desire.

Optimization of passenger individual air nozzles

Modern commercial aircraft have sophisticated systems to provide a save, healthy and comfortable environment for the passengers. These systems mostly operate invisible in the background, but the passengers can exert also direct control over their individual thermal environment by adjusting the air flow provided by nozzles in the overhead stowage compartment. Being only an optional system, the individual air nozzles received not much attention in the past and feature a high pressure loss, which are also a cause for flow noise.

Application of STAR-CCM+ to helicopter rotor hover

STAR-CCM+® Navier-Stokes solver has been applied to helicopter rotors in hover. Two tip planforms were analyzed: S-76 rotor with a swept tip and a swept tip with anhedral. The solidity of the three rotors was matched. Calculations have been done for a range of pitch settings. Comparisons of the measurements against computed thrust, power, and figure of merit values have been done. Where available, comparisons with other calculations. The simulations are in reasonable agreement with published data for the thrust, power, and figure of merit.

Pages