For example, when robot encounters an obstacle, front flippers rotate up, while robot meets a pit, front flipper will rotate down.
In one outcome, the screen rotated down until it touched the object and then rotated back up to its initial position, an event that adults recognize as possible.
At the end of her first year, our daughter sent us a paper about "true polar wobble," using the magnetism in rocks to investigate the idea that the magnetic North Pole rotated down to where the equator is and then back up in a geologically short period of time.
Then, flippers (A and Aʹ, as shown in "Crawler control" part) and all boom joints (θ2 and θ 2 ′ as shown in Fig. 3) of arms rotate down to lift robot body.
When throwing, your thumb rotates up while your middle finger rotates down.
On an October day last year, with Lt. Col. Fred Schenk at the controls, the plane glided toward a ship off the Atlantic coast and then, its engine rotating straight down, descended gently to the deck at seven feet a second.
After that, should joint keeps still, boom joint and elbow joint rotate down, until the endpoint of robot arm contacts with the ground, the last period (T3) is finished.
The final exercise, the so-called dunker, involved being seated wearing opaque goggles in a simulated helicopter as it was dropped into 12 feet of water and rotated upside down.
The torn-off tail assembly, rotated upside down, towered above a one-story house.
