Latest helicopter

Title: Latest helicopter
Subject: en Imagined technology & prototypes; en Airplanes and Zeppelins
Article Title and/or Image Caption: Latest helicopter - Is a two-seater with enclosed cockpit; Will assist in allied convoy protection against subs
Contributor: Alexander klemin (author)
Language: eng
Temporal Coverage: World War II
Date Issued: 1943-06-01
Is Part Of: Scientific American, v. 168, n. 6, 1943
pages: 275
Rights: Public domain
References: Sikorsky helicopter
Archived by: Stefano Furi