Why do fuels for rocket engines always a very low molececular weight?

Subject: Why do fuels for rocket engines always a very low molececular weight?

Date: Wed Dec 1 07:47:43 1999
Posted by Mark Venema
Grade level: undergrad School: Utrecht University
City: Utrecht State/Province: Utrecht Country: The Netherlands
Area of science: Engineering
ID: 944056063.Eg

Message:


I read that in rocket engines, scientists always use fuels with molecular 
weights that are as low as possible, to have a thrust that is as high as 
possible. But why exactly? What is the reason, why do gases with low 
molecular weights provide a higher thrust?

Re: Why do fuels for rocket engines always a very low molececular weight?

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