On application of BDI STS-WIFI testing system and Dasylab software, the testing process for strain of the casing tube with the packer rubber being seated is carried out. From the process the different friction force and normal pressure of specified seating pressure are achieved, by which the empirical formula is matched. Setting the experimental result as the boundary condition, the calculation result of the practical location of the five-stage packer on basis of oil and gas wells rod string mechanics is obtained, the maximum deviation of which is 0.1m compared with the magnetic location data. The research process on the experiment method proves its accuracy in laboratory while promoting the precision of the block location of the multistage packer in practical well casing tube.

No abstract

A wind tunnel test is designed to study aerodynamic effects of one individual rocket with deflectable nose. The test measures pressure with U-bend tube which is cost effective. Using rubber tubes in different lengths to measure pressure distributions of a flat-plate, and calculating how rubber tube affects the measurement, in order to modify the measured surface pressure of the nose. The surface pressure varies on different points while yawing angle and attack angle changes, the changing regularity could provide data for following numerical simulation and trajectory control.

No abstract