Curti

Mannan Talukder Curtis R. Kates Advanced Aromatics, Inc. 

J. O. Hirschfelder, C. F. Curtis, and R. B. Bird, Molecular Theory of Gases and Eiquids,]ohxi Wiley Sons, Inc., New York, 1954. 

Submitted by C. F. H. Allen, C. O. Edens, and James VanAllan. Checked by R. L. Shmnxr and Curtis D. Snow. 

Sodium chlorite [7758-19-2] M 90.4, m 180°(dec). Crystd from hot water and stored in a cool place. Has also been crystd from MeOH by counter-current extraction with liquid ammonia [Curti and Locchi Anal Chem 29 534 1957]. Major impurity is chloride ion can be recrystallised from O.OOIM NaOH. 

These guns were developed to attain much higher impact velocities than those available with powder guns (Crozier and Hume, 1957 Curtis, 1962). Peak velocities in the 7-8 km/s range can be routinely attained, with peak shock pressures approaching 1 TPa in high impedance materials. 

Curtis, J.S. (1962), An Accelerated Reservior Light-Gas Gun, National Aeronautics and Space Administration, TND-1144. 

Barrett, E. C., and Curtis, L. F., "Introduction to Environmental Remote Sensing," 3rd ed. Chapman Hall, London, 1992. 

Figure 9-6 shows a diagram of a single-stage impulse turbine. The statie pressure deereases in the nozzle with a eorresponding inerease in the absolute veloeity. The absolute veloeity is then redueed in the rotor, but the statie pressure and the relative veloeity remain eonstant. To get the maximum energy transfer, the blades must rotate at about one-half the veloeity of the gas jet veloeity. Two or more rows of moving blades are sometimes used in eonjunetion with one nozzle to obtain wheels with low blade tip speeds and stresses. In-between the moving rows of blades are guide vanes that redireet the gas from one row of moving blades to another as shown in Figure 9-7. This type of turbine is sometimes ealled a Curtis turbine.

Figure 9-7. Pressure and veioeity distributions in a Curtis-type impuise turbine.

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