Authors:
Svetlana Karaseva
1
;
Vladimir Belyakov
1
;
Vladimir Makarov
1
and
Dmitry Malahov
2
Affiliations:
1
Nizhny Novgorod State Technical University n.a. R.E. Alekseev, Minin Str., 24, Nizhny Novgorod, Russian Federation
;
2
Moscow Automobile and Road Construction State Technical University, Leningradsky prospect, 64, Moscow, Russian Federation
Keyword(s):
Rotary-screw Propulsion Unit, Full-submerged Archimedes Screw, Propulsive Characteristics, Snow and Swamp-going Amphibia, Geometrical Parameters of Archimedes Screw, Performance Curves, Overwater Characteristics, Computer Simulation.
Abstract:
The paper presents results of the numerical analysis of propulsive characteristics of full-submerged Archimedes screws of rotary-screw propulsion units of snow and swamp-going amphibious vehicles with the most typical geometric characteristics for this class of vehicles. The received performance curves and the pictures of visualization of interaction between water environment and Archimedes screws with different helix angles are given. The maximum available values of efficiency determinants of Archimedes screws for cruising and mooring modes are determined. The results of comparative analysis of efficiency of Archimedes screws and propellers with the same operation conditions are considered. The ways to increase the efficiency of rotary-screw propulsion units of snow and swamp-going amphibious vehicles according to the results received are designated. The results and the conclusions obtained as part of the study could be used by developers of amphibian with rotary-screw propulsion un
its to estimate and provide the overwater characteristics.
(More)