Download Amateur Rocket Motor Construction: A Complete Guide To The by David G. Sleeter PDF

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By David G. Sleeter

Un libro que se debe tener si uno quiere convertirse en un hobista de cohetes. Muy bien explicado y muy documentado, excelente libro.

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Read Online or Download Amateur Rocket Motor Construction: A Complete Guide To The Construction Of Homemade Solid Fuel Rocket Motors PDF

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Extra info for Amateur Rocket Motor Construction: A Complete Guide To The Construction Of Homemade Solid Fuel Rocket Motors

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The list of ASTM thermometers that can be used with manual D1078 distillation is given in Table 15. Thermocouples or resistance thermometers are temperature measurement devices used with automated D1078 distillation. Just as in D86, these non-mercuryin-glass temperature measurement devices have to exhibit the same temperature lag and accuracy as the calibrated mercury-in-glass thermometers. Confirmation of the calibration of these temperature sensors shall be done at regular intervals. 9+ % purity͒ toluene.

This practice is based on a system to characterize the separation sharpness of distillation columns developed by Butler and Pasternak ͓5͔. Similarly as for temperature, the pressure level employed affects the actual separation sharpness ͑Nactual͒. To allow comparison between column performance, Butler and Pasternak introduced a correction to account for the operating pressure. , approximately a quarter to a half of the theoretical number of plates ͑15 to 18͒ achievable with this column. Moreover, the data pertain to a reflux ratio of 5:1, application of a 2:1 reflux ratio will lower the actual and minimum efficiency even further.

9+ % purity͒ toluene. 6 ° C obtained under conditions of a manual D1078 distillation that uses a partial immersion thermometer. The required condenser temperature depends on the IBP of the material being distilled. Table 16 shows that it can be from 0 ° C to 50 ° C depending on whether the material’s IBP is below 50 ° C or above 150 ° C. The flask support hole dimension ͑referred to as heat shield hole in D1078͒ specified is also dependent on the IBP of the material: for those with IBPϽ 150 ° C, a hole size of 32 mm diameter is specified; for those with IBP Ͼ150 ° C, a 38 mm diameter hole is TABLE 16—Temperatures.

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