Airship Versus Airplane

Flying Wing versus Conventional Transport Airplane: the 300 Seat Case

Unconventional aircraft are being studied by the aeronautical engineering community with accelerated interest and effort to improve economic efficiency and to overcome operational and infrastructure-related problems associated to the increasing size of transport airplanes. The objective of the research reported here is to assess the technical feasibility and operational efficiency of a medium s...

High Maneuverability Lenticular Airship

This paper presents and describes a new lenticular shaped airship that allows 3D omnidirectional movements. The airship is intended to be part of a cooperative aerial system based in the synergy between an airship and a group of micro-quad rotors capable of long time missions as environmental, biodiversity monitoring, WiSAR missions, road monitoring, detection of forest fires, etc. The emphasis...

Turbulence Modeling Challenges in Airship

Turbulent separated flows around an airship-like geometry (a prolate spheroid 6:1) are investigated using three turbulence modelings based on statistical and Large Eddy Simulation (LES) approaches. The turbulence models used in the simulations are a standard high Reynolds k–ε model, a Smagorinsky LES model and a variational multiscale LES one. The flow of interest is characterized by a relative...

Airplane descent headaches.

Inviscid Flow Calculation around a Flexible Airship

In the context of an airship development programme, inviscid flow behavior and its coupling with structure flexibility are investigated. For this purpose, we have chosen a nonlinear analysis tool relying on the unsteady Euler model for the flow part and the classical elastodynamic equations for the structure. The numerical model for the flow is based on a Mixed Element Volume discretization der...