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| | Horten IV, Flying wing (Site not responding. Last check: 2007-10-31) |
 | | It is most remarkable that the fourth of their models, the Horten IV, was already better, or at least equivalent in performance to those of conventional design, which were developed with all the experience gained through dozens of previous models. |
 | | In the case of the Horten IV, using the slope of the total drag polar, the span efficiency appears to be 53 per cent, however, the actual span efficiency, using the induced drag increment, is 76 per cent. |
 | | Rudolf Opitz, who saved the Horten IV from deterioration, rebuilt and flew it with remarkable success in the U.S. National Contest of 1951, as well as In the early flight tests at Mississippi State University then introduced the author to flying the plane and gave over much of his vast experience on flying wings. |
| users.acsol.net /~nmasters/H-IV-report.html (4147 words) |
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