Would the need to reach Heligoland bring British drop tanks into use during the 1930s?
Short answerPossibly, but Britain could instead require more internal fuel or favour twin-engined fighters with sufficient range.
NotesA viewer suggests that reaching Heligoland could make drop tanks part of British fighter development during the 1930s. External fuel is plausible but is not the only path. Designers might instead increase internal fuel capacity or give more weight to twin-engined fighters with the required ferry range. The exchange demonstrates how a permanent overseas air base can become a concrete performance requirement without dictating one inevitable aircraft design.