NASA History Office, "The Evolution of Modern Aircraft"
| “ | The material is presented in a manner designed to appeal to the nontechnical reader who is interested in the evolution of the airplane, as well as to students of aeronautical engineering or others with an aeronautical background. The use of engineering terminology has been kept at a minimum, consistent with accuracy and the intent of the text; where unavoidable, suitable physical explanations have been included. | ” |
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