K

amagatb

a Referenced to sea level pressure and density at 14.696 psia and 59°F analogous to one atmosphere pressure b One amagat is local density divided by density at 14.686 psia and 0°F, 0.002 662slugs/ft3

a Referenced to sea level pressure and density at 14.696 psia and 59°F analogous to one atmosphere pressure b One amagat is local density divided by density at 14.686 psia and 0°F, 0.002 662slugs/ft3

[Builder, 1964]. At 19,350 ft/s (5,898 m/s) the contraction ratio for supersonic through-flow is 32 and for subsonic through-flow is 128. So, as the vehicle accelerates, the supersonic through-flow engine geometry and combustor are almost constant. For the subsonic through-flow engine the combustor height becomes rapidly smaller and more intensely heated. The pressure and temperature are very high for the subsonic through-flow engine, to the point of being impractical to impossible to operate in a flight weight combustor built from known materials.

Given the combustor conditions, the ratio of engine module drag to aircraft drag can be determined from equation set (4.6).

Engine drag

[( A1 ) eng + H

V A0 J air \ A1

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Solar Panel Basics

Solar Panel Basics

Global warming is a huge problem which will significantly affect every country in the world. Many people all over the world are trying to do whatever they can to help combat the effects of global warming. One of the ways that people can fight global warming is to reduce their dependence on non-renewable energy sources like oil and petroleum based products.

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