METHOD FOR MEASUREMENT OF DRAUGHT OF VEHICLES

摘要

The invention relates to measurement of draught of air, land and water transport facilities and can be used at tests of helicopters, motor vehicles, boats, yachts, underwater fishes-robots, etc., especially for measurement of draught of their structurally reduced models. The aim of invention is theincrease of accuracy of measurement of force of draught. For this purpose one end of flexible link is attached to one motionless point, and the its second end through the measuring device is attached to other motionless point so, that direction of theflexible link is perpendicular to line of action of measured force of draught, thus in the elastic link creating the force of preliminary tension ...P excluding its sagging. The measurement of draught force is made perpendicularly to flexible link measuring cross-displacement h of control mark of link in its middle point of application of draught force T calculating its value by formula T=(P-..P)sin.., where sin..= h/(L/2).