spacecrafts
The plural form of astronaut is astronauts.
All aircraft have rudders apart from helicopters. The rudder is used for turning the aircraft while its on the ground or it can be used for moving the nose of the aircraft side to side while flying at low speed.
In classic aircraft controls, the airplane's rudder controls yaw, the elevators control pitch and the ailerons control roll. The control handle controls rudders and elevators while ailerons are controlled by foot pedals.
The excellent mechanical strength and durability of superalloys are the reasons why it is mostly used for spacecrafts. Super alloys also have a very good resistance at high temperature and mechanical stress.
Although several spacecrafts have been sent to Venus, no alien spacecrafts have been discovered on its surface.
stern-post rudders
Rudders in china were made of wood. The Chinese were one of the first to attach the rudder to the stem.
The link has what you are looking for.
helms
Sailing ships must have rudders. Columbus's ships were no exception. There is a nice picture of a nao at the link. The Santa Maria, The flagship for his voyage when he discovered the new world, was this type ship. The Niña and Pinta were caravels. They also had rudders.
Airships have engines pushing them through the air and big rudders at the rear. When the rudders are put at an angle WRT the airstream, the ship will turn. For up/down they can either vent/fill some of the lifting gas, or - to some degree - use rudders for that too.
spacecrafts
Fuel is so useful to spacecrafts because without the fuel the spacecraft would not go.
spacecrafts
in white water no in racing yes
yn6ynyh