There are no -required- markings for a helicopter landing pad. Indeed helicopters are allowed to land anywhere on the airport they please (with permission from the tower if there is one)
When helipads are marked, it usually takes the form of a large white circle with a large white H in the center, sometimes marked with white or red lights.
A "helipad" is a helicopter landing pad. The helipad provides a clearly marked hard surface away from obstacles for the helicopter to land.
A helicopter needs a solid surface to fly over.
Not always. If you get transferred by boat to the rig it might not be a requirement. If you work on rigs where you get transferred by helicopter, you will have to be able to at least swim from a helicopter body from 3 to 4 meters below the water surface to the surface. This might be the only time you will ever need to be able to swim in the unlikely event of a helicopter ditching into the sea. Other times there will always be flotation devices ready. There is a training course required for operations with helicopter transfers. It is called HUET (Helicopter Underwater Escape Training). During this course you will be placed in a helicopter fuselage and dropped into the water. Once it is submerged and settled, only then can you undo the seat belts and escape via door or window (depending where you sit in the helicopter) to the surface. You are not allowed to inflate a flotation/life vest until you reach the surface.
Bone markings are the surface features of bones. They are sites of attachments for muscles, tendons, and ligaments. They are also passages for nerves and blood vessels. The categories of bone markings are: * projections and processes - grow out from the bone surface * depressions or cavities - indentations
Gravity
The five types of surface markings on bones are, elevations and projections (general), processes formed where tendons or ligaments attach, processes formed for articulation with adjacent bones, depressions, and openings.
Probes have landed on Venus
It proved a soft landing was possible, and that the lunar surface would support the weight of a lander. There was some concern the lunar surface might be of such thick and fluffy dust as to allow a lander to sink into it.
Actually Jupiter's surface is made of gas, the inner core is rock, therefore it is not a big ball of gas. if the surface is made of gas no markings can be evident on the surface.
yes it has a solid surface due to the gravity affect that pushes on the surface to create more of a packed surface suitable for landing on
1.4 lbs
To land a man on the surface of the moon, with a pinpoint landing and return him safely to the earth.