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Download e-book for iPad: Air War Over Korea by Robert Jackson

By Robert Jackson

Army background. an excellent hardcover reproduction. gentle put on. Tight binding. fresh, unmarked pages. excellent jacket; gentle fading and part creasing; price-clipped. no longer ex-library. includes bibliography and appendices. 175pg. Shipped Weight: less than 1 kilogram. class: Aviation; ISBN: 0684141930. ISBN/EAN: 9780684141930. stock No: 014449.

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2 Wavelength Fig. 15. Spectra of hypothetical missile viewed from space. *At longer wavelengths on occasion the atmospheric emission must also be taken into account. Band Model Parameters 57 Finally, in rocket plume calculations, other complicating factors may arise. For example, for very high vehicle velocities at high altitudes, Doppler shifts of the lines might have to be taken into account. Also, at high altitudes, non-LTE conditions can prevail. 7 Band Model Parameters Given the specification of the appropriate broadening effect, there are three attributes of the spectral line content in a particular wavelength interval that govern emission and absorption: the distributions in strengths, widths, and positions.

Cross-sections for kinetic excitation vary not only with the specific species but also the mode of the vibration or rotation of the particular molecule. This mechanism is the basis for one of the simple plume models discussed in Chapter 5. 16 shows the relation between the maximum kinetic energy of the encounter and the energy of the photon. The latter, of course, is given by the Bohr relation AE = h,where L\E is the quantum of energy, v is the frequency of the radiation, and h is Planck's constant.

5; the repetitive character will have been eliminated by dissipative effects and the dominant feature is the mixing layer that assumes an umbrella shape (as opposed to the cigar shape of the plume at lower altitudes). 6 shows the correspondingplume structure for the special case where the Fig. 5. Structure of high-altitude plume. Fig. 6. Retro plume at high altitude. 26 Characteristics of Exhaust Plumes thrust and vehicle vectors are aligned, that is, the engine is firing in a retro mode. For intermediate cases the structure varies accordingly and is asymmetric.

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Air War Over Korea by Robert Jackson

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