摘要The robotic airship is one of the most unique and promising green aircraft,however,as a"lighter-than-air aircraft"and"thermal aircraft",its long-endurance flight has great difficulties in decreasing drag and controlling buoyancy and pressure under thermal effects.In this work,we reported a robotic airship inspired by the Physalia physalis,imitating its morphol-ogy,physiological structure,and biological behaviors.The hull is designed by imitating the morphology of the Physalia physalis,and the gasbags including a helium balloon,two ballonets,and a thermoregulation gasbag are designed by imitat-ing the physiological structure and biological behaviors of the pneumatophore,bladder,and gland of the Physalia physalis,respectively.Experimental results show that the bionic airship has an increase of about 40％in lift-to-drag and decreases the pressure in helium balloon by 47.5％under thermal effects,and has better aerodynamic performances and thermoregulation performances than conventional airships.