The Bell HSL (Model 61) was an American 1950s anti-submarine warfare (ASW) helicopter built by the Bell Helicopter company, the only tandem rotor type designed by Bell. - iFunny
Bell HSL - Wikipedia
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BELL HSL-1 The Navy First Anti-Submarine Warfare Helicopter
Bell HSL / Model 61
Hintergrundbilder : Fahrzeug, Flugzeug, Bell 412, Sikorsky SH 3 Seekönig, Luftfahrt, Atmosphäre der Erde, Hubschrauber Rotor, Rotorcraft, Militärhubschrauber, Sikorsky s 61, Sikorsky s 70, S 61 sh 3 Hubschrauber, S 61 sh
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Bell Model 61 / HSL helicopter - development history, photos, technical data
File:Bell XHSL-1 NAN6-53.jpg - Wikimedia Commons
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Bell Model 61 XHSL-1, 129134, Stock Photo, Picture And Rights Managed Image. Pic. MEV-11355726 | agefotostock
Bell HSL - Wikipedia
Revell 3888 1:32 1st Plastic Model Kit 03888 Bell X-1 (1rst Supersonic), Multicoloured, 1/32: Amazon.de: Toys
BELL HSL-1 The Navy First Anti-Submarine Warfare Helicopter