Applying Common Sense in Analyzing Scientific Claims

The claim:  Japanese students from Osaka Public University engineered and piloted an innovative ‘flying cycle’ aircraft in 2019. Named Tsurugi, the pedal-powered plane achieved a notable flight distance of 19 km (11 mi) during the Yomiuri Television Birdman Rally.
Hmmmm.  Elite athletes put out about one-half horsepower over extended periods of time and the smallest ultralight plans have engines with 15 horsepower.  Does this seem plausible?
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