Download or read book An Analysis of Initial Static Pressure Probe Measurements in a Low density Hypervelocity Wind Tunnel written by David E. Boylan and published by . This book was released on 1963 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: An initial experimental program was previously conducted to study the problems in using static pressure probes for flow calibration purposes in low- density, hypervelocity wind tunnels with continuous flow. This data is reviewed in the light of more recent data on thermal transpiration. Results indicate that such probes may be used for what might be termed secondary calibrations, but care is required in interpreting the results. The present experiment yielded data which are compared to static pressures calculated from impact- pressure probe calibrations.

Download or read book Description and Preliminary Calibration of a Low density Hypervelocity Wind Tunnel written by J. Leith Potter and published by . This book was released on 1961 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt: A small, low-density, hypervelocity, continuous wind tunnel operating at total temperatures from 2000 to 4000 K is described, and initial experiments designed to determine the characteristics of the flow are discussed. Effects of low Reynolds numbers on impact-pressure probes and static-pressure probes are shown. Preliminary work with a probe for measuring local mass-flow rate is outlined, and results are shown to be in agreement with impact and static pressure measurements. Axial and transverse surveys of flow in the nozzle are presented to illustrate the extent of boundary-layer growth and the useable core of flow. A diffuser is proved to be advantageous, even though very low Reynolds numbers are typical of the tunnel. A comparison of data on drag of spheres, including measurements from the new wind tunnel, is presented. (Author).

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1992 with total page 1572 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Abstract Bulletin written by Defense Documentation Center (U.S.) and published by . This book was released on 1961-10 with total page 1540 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Report written by and published by . This book was released on 1965 with total page 1014 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book U S Government Research Reports written by and published by . This book was released on 1961 with total page 1064 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the Conference written by and published by . This book was released on 1963-05-03 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Neutral Atmospheric structure measurements written by Pitot probe techniques and published by . This book was released on 1972 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Keywords Index to U S Government Technical Reports written by and published by . This book was released on 1962 with total page 1160 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Keywords Index to U S Government Technical Reports permuted Title Index written by United States. Department of Commerce. Office of Technical Services and published by . This book was released on 1963 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bibliography of Scientific and Industrial Reports written by and published by . This book was released on 1971 with total page 1142 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book U S Government Research and Development Reports written by and published by . This book was released on 1963 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Analysis of Fluctuating Static Pressure Measurements in a Large High Reynolds Number Transonic Cryogenic Wind Tunnel written by William B. Igoe and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Dynamic measurements of fluctuating static pressure levels were made using flush mounted high frequency response pressure transducers at eleven locations in the circuit of the National Transonic Facility (NTF) over the complete operating range of this wind tunnel. Measurements were made at test section Mach numbers from 0.2 to 1.2, at pressure from 1 to 8.6 atmospheres and at temperatures from ambient to -250°F, resulting in dynamic flow disturbance measurements at the highest Reynolds numbers available in a transonic ground test facility. Tests were also made independently at variable Mach number, variable Reynolds number and variable drivepower, each time keeping the other two variables constant thus allowing for the first time, a distinct separation of these three important variables. This report contains a description of the NTF emphasizing its flow quality features, details on the calibration of the instrumentation, results of measurements with the test section slots covered, downstream choke, effects of liquid nitrogen injection and gaseous nitrogen venting, comparisons between air and nitrogen, isolation of the effects of Mach number, Reynolds number and fan drive power, and identification of the sources of significant flow disturbances. The results indicate that primary sources of flow disturbance in the NTF may be edge-tones generated by test section sidewall re- entry flaps and the venting of nitrogen gas from the return leg of the tunnel circuit between turns 3 and 4 in the cryogenic mode of operation. The tests to isolate the effects of Mach number, Reynolds number and drive power indicate that Mach number effects predominate. A comparison with other transonic wind tunnels shows that the NTF has low levels of test section fluctuating static pressure especially in the high subsonic Mach number range from 0.7 to 0.9"--Page i.

Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1973 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book High Speed Wind Tunnel Testing written by Alan Pope and published by John Wiley & Sons. This book was released on 1965-01-15 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book My Research Journey on Flow Measurements written by Muruga Lal Jeyan Jv and published by Independently Published. This book was released on 2020-07-03 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: A multi-hole conical probe is employed to determine the velocity of the air flow, totaland static pressures of the wind tunnel, wave angle in addition to estimating the noise of the testsegment. It twinkles with the unique qualities of being trouble-free, vigorous with the flexibility tobe applied even in ruthless situations. Our innovative conical wedge type probe is launched bymeans of AUTOCAD and engineered by exploiting the stain less steel material. The pressure holesare situated at the end of the conical probe which is applied to calculate the pressure and flowvelocity of the atmosphere. The novel probe is performed at supersonic settings by the effective useof the proficient Computational Fluid Dynamic Analysis (CFD analysis) software. It dischargesthe task of assessing the enduring competence of the projected probe under a variety of situationslike fixed pressure and temperature along with the velocity of the air flow at different machnumbers.

Download or read book NASA Technical Memorandum written by and published by . This book was released on 1991 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: