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National advisory committee for aeronautics: Report No. 573. aerodynamic dynamic characteristics of N.A.C.A 23012 and 23021 airfoils with 20-percent-chord external-airfoils flaps of N.A.C.A 23012 section: by Robert C. Platt and Ira H. Abbott. 20 pages, illustrations, 23 × 29 cms. Washington, Superintendent of Documents, 1936. Price ten cents


Publisher
Elsevier Science
Year
1937
Tongue
English
Weight
113 KB
Volume
223
Category
Article
ISSN
0016-0032

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National advisory committee for aeronaut
📂 Article 📅 1932 🏛 Elsevier Science 🌐 English ⚖ 67 KB

## BOOK REVIEWS. 495 This latter process has supplanted all the others in respect to its industrial importance. Following a brief chapter on the history of nitrogen fixation processes which, in addition to the two just mentioned, includes the cyanamide and alkali cyanide methods as well, further