It is the control planes on the submarine that are the primary method of normally controlling the rate of ascent or descent of the craft. Note that submarines have a few different configurations as regards planes. The stern planes are used alone, or in conjunction with the bow planes, if the boat is equiped with the latter ones, to change what is called "the bubble" or the angle of attack. On some boats, there are planes on what is called the fairwater or sail ("conning tower"), and these, the so-called fairwater planes, can be used to change depth slowly while maneuvering. It is these planes that are instrumental in maintaining depth on a properly trimmed boat as they are centrally mounted, and act to push the "whole boat" down or up without changing the bubble. Ballast tanks are flooded completely to dive and to conduct subsurface operations. The bouyancy of the boat (along with the trim) is controlled by the partially flooding the trim tanks.
The parachute valve at the top of a hot air balloon is used to release hot air from the envelope to control the descent rate. By opening the parachute valve, the pilot can allow hot air to escape, which cools the air inside the balloon and causes it to descend. This helps in maneuvering and landing the balloon safely.
no more than 18 meters per minute
The best shape for a parachute to ensure optimal performance and safety during descent is typically a round or elliptical shape. These shapes provide stability, control, and a slower descent rate, which helps to reduce the impact force when landing.
No, their rate of descent depends on their "negative bouyancy"...
It is approx 40 minutes and 3 seconds. The rate of descent is 22.5 feet per minute!
"Rate of descent" is a speed; so the idea is to divide the distance by the time.
A variometer is a device that is used for indicating the rate of the aircraft's descent or climb.
A parachute works by creating drag as it opens and catches air. When a person or object is falling, the parachute slows down the descent by increasing air resistance, allowing for a safer and slower landing. The canopy shape and size help control the rate of descent and steer the parachute in a specific direction.
Depending on the aircraft but most jets and passenger aircraft have a safe climb speed of anywhere between 1800 and 3000 feet per minute. A safe and sensible descent rate for the same aircraft may be between 800 and 2000 feet per minute.
When a person opens a parachute, it creates drag or air resistance which slows down the descent rate. The larger the parachute, the more drag is created, and the slower the person falls. This helps to reduce the speed and control the descent for a safe landing.
Balloonists can control the descent of a hot air balloon by releasing some hot air to cool the temperature inside the balloon. This decreases the buoyancy and allows the balloon to descend slowly. Additionally, the pilot can use different wind currents at different altitudes to control the descent rate.
When you change the shape of the paper, you are altering the air resistance that the paper experiences as it falls. A paper with a larger surface area will experience more air resistance, slowing down its descent compared to a paper with a smaller surface area. So, the rate of descent changes because of the differing air resistance acting on the paper.