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 Posted: Mon 15:11, 13 Dec 2010 Post subject: tory burch shoes Static and dynamic temperature ca |
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Steady state and dynamic temperature calibration device
l thermal calibration wind tunnel and RD ~ 02 calibration wind tunnel running, it includes the main flow, secondary air, fuel and cooling water pressure control, mainly by the electric control valve, needle break, relays and actuators etc. . Measurement system is mainly used for collecting and processing the temperature sensor calibration data, the automated data acquisition and processing system, power supply, pressure and temperature sensors, sensor array composed of test accuracy. Gan amount of technical '1990 .10 C9] air supply system includes the main gas source and the auxiliary gas source for the two main gas source to provide the main flow calibration wind tunnel,[link widoczny dla zalogowanych], the two piston blowers and so on. Auxiliary gas source is mainly small air compressors, blowers and vacuum pumps, small Luo composed of Smilax, they point cut to official burning of the fuel supply system, test Yin B (or test section c) the inner shell and double-shielded aspirated cooling heat provide galvanic gas. Fourth, is the main technical indicators of potential device 1. RD ~ O1 thermal calibration wind tunnel (1) test section, test section diameter of the test section C are 100ramj diameter 150mm ~ (2) test section of the air temperature range of room temperature to 900. c, air flow within 1 minute temperature fluctuations (standard deviation) for persons 0.3oc} test section within the core area of the radial, air temperature field uneven degree of Po disabilities 1c, (3) test within the B section and test section Anal Mach number airflow (which is the local sound speed and flow ratio,) of 0.1 ~ o. 6, the test section Mach number inside the anus C 0.1 ~ 0.45. 2. RD ~ O2 calibration wind tunnel test section in the open air temperature is close to room temperature, Mach number anal as 0.1N0.95, edge cardiac airflow total pressure and static field inhomogeneity field is 0.2 degrees, air flow turbulence intensity was I% or so. Nozzle exit diameter of 70mm. V. The calibration system should be completed, should be carried out with our strong (on the next page 0) space is mapped to determine the minimum. Specifically, the minimum zone evaluation, the characteristics of the high points of convex sets and characteristics of low projection projector must have a common point of convex complex (intersection of the guidelines), the minimum external column (maximum inscribed column) assessment, the projector must be convex sets inclusive origin (inclusion criteria), if the projection circle of six who has a violation of beta days, then will not meet the minimum. Third, I give spinulosa ~ 60mm for the journal, measuring three sections, each section measuring l2 weeks to offset points, a total of 36 linear programming method for assessment of saddle point solver, the original data and assessment results with the work. First, the dynamic characteristics of the temperature sensor calibration was studied. We calibrate the wind tunnel at two different diameter and material Ji bare the dynamic characteristics of thermocouple calibration. Means of generating air temperature step is an important part of the dynamic calibration. Apart from a 01 in the RD calibration wind tunnel heat shield on the package body generated by the temperature of step flow, but also RD - 02 calibration wind tunnel using electric heaters and carbon dioxide lasers are two ways to produce air temperature step . Produced by carbon dioxide laser is an advanced temperature step method, the starting time is very short, but also on the air without any interference with the flow field, we are also users of airborne aircraft missiles and rockets used in the dynamic characteristics of the temperature sensor calibration These temperature sensors are thermocouple, and a thermal resistance, but also platinum resistance type. Italian branch registration results are very elliptical. In addition, we recover the temperature sensor calibration coefficients have also been some work to get good repeatability of data, rules and reasonable. It should be noted that this addition to the temperature sensor calibration device steady and dynamic characteristics of quasi-sleep, but also that the contact and non-contact temperature sensor to provide test hand-hide, and can do some heat transfer and material Experimental study and other aspects. Reference text vessels [1] Wang Guanglin, an overview of high-speed high-temperature calibration device,[link widoczny dla zalogowanych], namely, tidal technology. 4,1987. [2] Shixin Chang, Chuan Sheng Xiao temperature time constant determination of Technology, Measurement and Control 1989 Conference Proceedings. 1989,6 Annex. Can be seen from the table: the minimum zone evaluation of six test number greater than zero, a non-degenerate case, a total of six feature points 2:4 allocation; minimum external evaluation of the five test number Gui, three greater than zero the two a zero for the degenerate case,[link widoczny dla zalogowanych], a total of three feature points in section 2, the largest assessment of internal columns is equal to zero when the number of three tests, two is greater than zero, as a special case, with two feature points in a cross-section 3, \radial \The smallest convex set projection zone evaluation, see photos. References E1] Mrs, etc.,[link widoczny dla zalogowanych], linear saddle, Gao planning and geometric error of the package pit assessment. \E2] Huan-Wen Tang, practical introduction to mathematical programming,[link widoczny dla zalogowanych], Dalian Institute of Technology Press, 1986.
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