Effect of anoxic anoxia on stomach emptying time of rats fed corn oil.
P L MacLACHLAN
Abstract
P L MacLACHLAN
Abstract
Concept of dis?-wing MAV with propeller in a wing slot has a number of advantages and disadvantages. The concept is used by MIPTEAM for solving the problem of fixed wing MAV indoor flight by means of lift maximization for wing with low aspect ratio. There are only few investigations of dis?-wing MAV aerodynamics with propeller in a wing slot. Present work describes numerical investigation technique and aerodynamic characteristics obtained. The main results are: good stall characteristics of this concept, low lift/drag ratio (further improvement is possible) and sophisticated flow pattern. It was obtained that the main part of the lift is created by wing surface in front of the actuator disk. Also, leading edge separation area produces small impact at the lift even at high angles of attack. It was found that increasing of the propeller thrust decreases maximum lift/drag ratio. Flow features in numerical results correspond to the known experimental results and flight tests.
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Concept of dis?-wing MAV with propeller in a wing slot has a number of advantages and disadvantages. The concept is used by MIPTEAM for solving the problem of fixed wing MAV indoor flight by means of lift maximization for wing with low aspect ratio. There are only few investigations of dis?-wing MAV aerodynamics with propeller in a wing slot. Present work describes numerical investigation technique and aerodynamic characteristics obtained. The main results are: good stall characteristics of this concept, low lift/drag ratio (further improvement is possible) and sophisticated flow pattern. It was obtained that the main part of the lift is created by wing surface in front of the actuator disk. Also, leading edge separation area produces small impact at the lift even at high angles of attack. It was found that increasing of the propeller thrust decreases maximum lift/drag ratio. Flow features in numerical results correspond to the known experimental results and flight tests.
Key concepts: Wing, Wing twist, Wingtip vortices, Stall (fluid mechanics), Propeller, Wing loading, Lift-to-drag ratio, Aerodynamics