Karl-Heinz Regnat's Black Cross Volume 2: Junkers 288/388/488 PDF

By Karl-Heinz Regnat

ISBN-10: 1857801733

ISBN-13: 9781857801736

The JU288 used to be a medium bomber which first flew in June 1941. It got here out of the Luftwaffe's largest improvement software of the struggle. This was once referred to as Bomber B and used to be manage to provide a brand new strategic bomber. numerous variations of the JU288 supplying various speeds, levels and bomb rather a lot have been envisaged, yet merely 22 airplane have been produced. the advance undertaking which ended in the JU388 started in September 1943. This used to be to be a multi-purpose variety that may be used as a bomber, an evening fighter or a reconnaissance airplane. The evening fighter version had special radar antennae at the nostril. the ultimate variety tested within the ebook, the JU488, was once first proposed in early 1944. This was once for a four-engined heavy bomber. that allows you to speed up the advance application, elements from the JU88, 188 and 288 have been utilized in its building. prototypes have been assembled in France yet have been destroyed via the French resistance prior to they can be shipped to Germany for review resulting in the abandonment of this system in November 1944.

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Extra resources for Black Cross Volume 2: Junkers 288/388/488

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High compressibility and acoustic impedance. This then would guarantee a good yield of vaporization. (d) The linear momentum of the vapor should be concentrated in one direction; a demand that is not particularly favored by thermodynamics. Moreover, one readily estimates that in order to "paint" a magnetic field line over a length of some 10,000 km within a period of less than an hour (this is typical for the optical window between ejection and disappearance of the jet in the earth's shadow at the altitudes of interest), highly directed initial vapor velocities well above 10 km/sec (escape velocity from the earth's gravitational field) are necessary.

So a great variety of vapor sources is available to be adapted to the demands of geophysical experiments. Similarity between these results of laboratory studies and charges about 30-300 times heavier to be used in rocket releases, was established by comparing the fluorescence intensities of the vapor jet from a 1600 g shaped charge in the upper atmosphere at 226 km altitude with a barium cloud produced by combustive vaporization at 196 km altitude. The photograph (Fig. 11) was taken about 2 sec after ignition of the shaped charge.

13. 3 kg explosive, giving a velocity distribution similar to the one in Figs. 6 and 7, was released from a Nike-Tomahawk rocket at 335 km altitude and an angle of about ap = 20° toward the field line. During the first 80 sec after ignition the fast part of the jet could be traced by means of normal photographic equipment. Television cameras gave useful records for about 2 min, whereafter the fluorescence faded away at altitudes well above 1000 km. As in the laboratory experiments (Fig. 7) there is a large amount of slow vapor, which remains at the release altitude and is comparable in brightness to the conventional barium-vapor cloud to the lower right, released at 219 km altitude.

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Black Cross Volume 2: Junkers 288/388/488 by Karl-Heinz Regnat

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