EVA Suits

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The Extra Vehicular Activity suit, or EVA suit, has been in use since the earliest eras of space exploration. While the designs for the EVA suits used over the centuries have some minor differences in design the overall suit designs have remained the same.

22nd Century EVA Suit

Helmet
The helmet of the suit used in the 22nd century gave the wearer an almost normal field of few through the visor. The main limitation in the field of view is that the vertical field of view was limited to eight degrees. This limitation could be overcome by the wearer moving their head within the helmet. There were also two smaller lights inside the helmet that illuminated the wearers face. The visor could be opened by swinging the front section of the hood upwards.

Two lights were mounted to the top of the helmet with one on each side of the head. At the back of the helmet hoses connected to the LSPU. These hoses allow for air circulation in the helmet, provide power connection for the lights and connections for communications systems. The base of the helmet connects directly to the LSPU via a secondary connection ring providing an air tight seal.
Life Support and Propulsion unit
The life support and propulsion unit or LSPU is a rigged shell that is worn on the upper body. The unit housed the life support, propulsion, communications, and power pack. Controls for the systems housed in the LSPU where located on the front of the unit.

There were two leg bands connected by a belt that were used to hold the unit in place. The belt could be used to hold tools.
EVA Suit
The EVA suit was a single piece garment that had a zip fastener on the front that would seal the suit. The arms of the suit ended just below the elbow where the gloves connected to the suit via a zip fastener. The legs ended at the ankle. The zip fastener for the boots was located inside the legs just above the ankles.

In the event that the suit was torn or punctured the suit was designed to be self-sealing protecting the wearer from the effects of decompression.
Gloves
The Gloves were made from the same materials as the EAV suit and were self-sealing. The gloves were connected to the EVA suit via a zip fastener that connects the gloves to the end of the arms of the EVA suit.
Boots
The boots were made from the same materials as the EVA suit and could be magnetized to keep the wearer connected to the outer surface of the ship’s hull during a spacewalk. Like the Gloves the boots connected to the suit via a zip fastener that connected the boots to the inside of the legs of the EVA suits. If punctured the boots were self-sealing like the EVA suit.

23rd Century EVA Suit

2250's-2260's

Helmet
The helmet in use at this time was more spacious that earlier versions. The sides of the the helmet were solid and the clear visor ran from the front of the helmet over the head and down the back of the helmet. Unlike earlier versions the visor could not be removed and was an integrated part of the helmet. There was a light at the bottom of the helmet that allowed the wearer to see. The Helmet was equipped with a name plate to identify the wearer.
Life Support and Propulsion unit
While the LSPU units of earler versions were separate units the LSPU of the EVA suits in use at this time were integrated into the body of the EVA Suit.
EVA Suit
The EVA suit in use at this time was a form fitting metallic silver single piece unit. The life support, propulsion, communications, and power packs where built into the outer layer of the suit. The suit was equipped with the belt that could be used to hold a phaser connected directly to the belt. The sleeves of the suit ended just below the elbow. The legs of the suit ended at the ankle. Both the legs and arms of the suit had magnetic ring connectors for attaching the boots and gloves.
Gloves
The gloves were made of the same material as the EVA suit and connected via magnetic ring connectors to the Sleeves of the EVA suit just below the elbow by the use of magnetic connector rings.
Boots
The boots were made of the same material as the EVA suit and connected to the suit just above the ankles by the use of magnetic connector rings. The boots were able to magnetized keeping the wearer connected to the deck or the outer hull of a ship during situations were there is no gravity.

2270's-2280's

Helmet
The helmet in use at this time had returned to a more domed design. The visor was still an integrated part of the helmet and allowed the wearer to move their head with in the helmet. The back end of the helmet was a solid piece with the visor tanking up the bulk of the front part. Unlike earlier designs there was no light built into the helmet.
Life Support and Propulsion unit
By the early 2270s the LSPU had once more become a separate unit worn over the upper body of the EVA suit. Like the EVA suits of the 22nd Century the helmet connects directly to the LSPU. There where systems controls located on the back of the LSPU. Like earlier versions the LSPU contained life support, communications, propulsion systems along with the power packs.

The propulsion systems of the LSPU could be supplemented with the use of a thruster pack. The thruster pack attached to the back of the LSPU and had control handles that were held by the wearer in each hand and used to control the thruster pack.
EVA Suit
The EVA Suit used at this time retained the form fitting design of the previous version with the only change being that the suit was now dark brown and orange in color. The selves of the the EVA suit ended at the wrist. Inside the sleeves just above the wrist is a magnetic connection ring for attaching the gloves. The legs of the EVA suit ended at the ankles with magnetic connection ring located just above the ankle inside the legs for connecting the boots.
Gloves
Like earlier versions of the EVA suit the gloves were made from the same materials as the EVA suit and connected to the suit just above the wrists by the use of magnetic connector rings located inside the sleeves of the suit.
Boots
Like the gloves the Boots were made of the same materials as the EVA suit. The boots were able to be magnetized to keep the wearer connected to the deck or outer hull of as ship during zero gee situations. The boots connected to the legs of the EVA suit inside the legs just above the ankles

24th Century EVA Suit

Helmet
By the 24th century the helmet of the EVA suit had taken on a more angular design that still allowed room for head movement within the helmet. The visors was still a integrated part of the helmet and two clear view ports had been added to the helmet just above the top edge of the visor.

There were two lights mounted inside the helmet, one on each side of the head that illuminated the wearers face. The helmet also had communication equipment integrated into it. The helmet connected to the LSPU via magnetic connection hard points.
Life Support and Propulsion unit
The LSPU used at this time was a rigid shell worn over the upper body and housed the life support, propulsion and communication systems along with the suits power supply. the LSPU was equipped with an extra air hose that allowed air to be shared between two different suits. The LSPU also housed backup systems that could keep the wearer alive in the event of the complete failure of the primary systems even if the wearer had lost consciousness.
EVA Suit
The EVA suit was form fitting and mostly white in color with the chest and back area colored red. The suit was a once piece unit and did not have the self-sealing functions show in earlier version of the EVA suit. The sleeves of the suit ended at the wrists where the gloves connect via magnetic compression fittings. There was a small control unit built into outer layer of the left arm. The legs of the suit ended half way down the calf were the boots connected via magnetic compression fittings. There was also a small control unit built into the outer layer of the left leg that was used to magnetize and demagnetize the boots.
Gloves
The gloves were made of the same material as the suit and connected to the arms of the suit via magnetic connector rings at the wrists.
Boots
The boots were made of the same maternal as the suit and connected to the legs of the suit via magnetic connector rings half way up the wearers calf. Like earlier versions the boots could be magnetized.