“The Vertical Flight Society — founded in 1943 as the American Helicopter Society, Inc. — is the world’s only international technical society for engineers, scientists and others working to advance vertical flight technology.
We bring together industry, academia and government to tackle the toughest challenges in vertical flight. Our members share a legacy of knowledge and accomplishment that has been driving innovation for more than 80 years!
As a member of the world’s only Vertical Flight Society, you can help advance the state of the art in vertical flight. Our members can participate in many outreach initiatives and professional benefits.“
From: vtol.org