Design
The Orlan space suit has gone through several models. Space-rated designations include the Orlan-D, Orlan-DM, Orlan-DMA, and Orlan-M models; the Orlan-GN, Orlan-T, and Orlan-V are used in training and are used underwater. The latest model, called Orlan-MK, was tested during a spacewalk in June, 2009. The original Orlan suit, with a two and a half hour operation time, was designed as an orbital suit for use on the Soviet Lunar programme, although it was abandoned in favour of a model with a greater operating capacity. The Orlan-D expanded the operation time to three hours; the Orlan-M to nine hours.
The Orlan space suit is semi-rigid, that is, it has a solid torso and helmet but flexible arms. It was designed with a rear hatch entry through the attached backpack that allows it to be donned relatively quickly (taking approximately five minutes). The first Orlan suits were attached to the spacecraft by an umbilical tether that supplied power and communications links. The Orlan-DM, and all models since, were designed to be self-sustaining.
Read more about this topic: Orlan Space Suit
Famous quotes containing the word design:
“What but design of darkness to appall?—
If design govern in a thing so small.”
—Robert Frost (1874–1963)
“Joe ... you remember I said you wouldn’t be cheated?... Nobody is really. Eventually all things work out. There’s a design in everything.”
—Sidney Buchman (1902–1975)
“A good scientist is a person with original ideas. A good engineer is a person who makes a design that works with as few original ideas as possible. There are no prima donnas in engineering.”
—Freeman Dyson (b. 1923)