Early sails had a constant angle of twist; variable twist sails resembling a modern airplane propeller were developed much later.
Since the mallard is required by his role to sail almost constant patrol off the point of the shore where his mate sits hidden on their nest, he has been forced to become a tame mallard.
Still, he felt that the boat was fundamentally sound, so he braced the rudder as well as he could, and started learning to balance the boat in order to sail a constant course on her own.
Max held the rudder steady, and the sail had a constant bellyful of wind, but as the hours passed the city grew smaller.
The aim of this paper is to present an accurate, analytical, approximation of the spacecraft trajectory generated by an electric solar wind sail with a constant pitch angle, using the latest mathematical model of the thrust vector.
On the basis of the identified state-space type tracking motion model, a predictive controller is designed to steer the ship sailing forward with the constant velocity along the predefined reference path.
It soon became apparent that with only four ships, the division could not maintain the level of preparedness required by the constant need to be ready to sail at limited notice.
WHAT TO DO Provo's calm, reef-protected waters and constant easterly trade winds make for good sailing, windsurfing or kitesurfing.
Rear Admiral Evans was relieved of command during this time, as he was completely bedridden and in constant pain, so on March 30, Connecticut set sail north at full speed.
We compared the results of our method with an existing liner shipping route schedule and found a cost decrease of 28.9% after optimizing the buffer time distribution compared to the cost of sailing the current route schedule at constant speed.
