The Vertical Flight Library and AHS Online Store

AHS presents the Paper of the Month!

The May Paper of the Month is now available – free for members: The Effects of Ambient Conditions on Helicopter Harmonic Noise Radiation: Theory and Experiment. The paper was written by the late Dr. Ben Sim, US Army; Dr. Eric Greenwood and Dr. D. Douglas Boyd, NASA Langley Research Center. It was presented at Forum 72 in 2016.

This paper was selected in memory of Dr. Sim, who passed away unexpectedly in March.

Are you an AHS member? Log in to receive this month's paper absolutely free! Not a member? Check out the benefits of membership and consider joining today!

Current product count in the AHS Online Store: 11391 items, with 11118 technical papers! We are constantly adding new items to the store, so check back often.

The Vertical Flight Library includes downloadable papers from nearly all Forum Proceedings from 1943 to today, as well as papers from nearly 100 Technical Specialists' Meetings and 60+ years of Vertiflite magazine! Note: the Journal of the AHS is hosted separately — please go to www.vtol.org/journal.

The AHS Online Store includes Forum and Technical Meeting proceedings CD-ROMs, books and AHS merchandise that require shipping.

Choose a department or use the search box above to find specific terms. You can also search our index of all available Forum papers.

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