Explanation:
Ben Parslew had a problem: His robots weren't very good at jumping. Parslew, an aerospace engineering researcher and lecturer at the University of Manchester, studies the mechanics of flight. Along with his research team, he had turned to robots to better understand how flying machines might be able to launch themselves into the sky like birds. But while avians seem to effortlessly become airborne, Parslew's robots, which were relatively simple constructions, didn’t find it quite so easy. Some would flip over in the air and land upside-down. Others remained stable in the air but jumped in the wrong direction. And still others fell over before they got off the ground in the first place