User:Tylerd24/Evaluate an Article

Which article are you evaluating?
Monopropellant Rocket Engine

Why you have chosen this article to evaluate?
I have a background in rocketry and have worked with a couple different monopropellant systems for attitude control. Almost every rocket that is launched (right now) contains some kind of monopropellant rocket whether it's for spacecraft propulsion, attitude control, or station keeping. The article at a glance is short and could definitely benefit from being filled out with more information as the current length seems to indicate that monopropellant rockets are not very significant when they fly on almost every rocket and some planes. It also has some incorrect/misleading information like saying that the energy is stored in the chemical bonds which is a common misconception in chemistry (bonds forming actually releases energy and breaking bonds requires energy).

Evaluate the article
There is no picture or explanation of what a monopropellant rocket is/does and why they are used. The first section of the article immediately launches into explaining the chemical reaction behind the chemical thrusters and this section actually seems to contain the initial explanation that readers are typically looking for at the top of the article buried in it. There is no history section which could easily be added by digging up some publicly available NASA documentation on development or from sources in other Wikipedia articles like the article for hydrazine. The article does have a "New Developments" section but does not talk about the phasing out of monopropellant thrusters in favor of utilizing the main rocket stage's propellants for attitude control. There are also few sources to back up what can be regarded as opinions like "Chemical-reaction monopropellants are not as efficient as some other propulsion technologies" which is true if you know what they are referring because you have some outside context, but if a reader has zero context that may come off as an opinion especially without a source in that entire paragraph. It seems that the article has a lot of the right pieces it just needs to be organized in a better/more digestible manner and more sources.