Кажется, были костюмы для нахождения в корабле (union suit) + отдельные костюмы, для выхода в отрытый космос (A7L Apollo spacesuit).
Вот как запутанно говорится об этом здесь:
Apollo/Skylab A7L
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Neil Armstrong described his Apollo 11 A7L space suit as "tough, reliable and almost cuddly."[1]
The A7L Apollo & Skylab spacesuit is the primary pressure suit worn by NASA astronauts for Project Apollo, the three manned Skylab flights, and the Apollo-Soyuz Test Project between 1968 and the termination of the Apollo program in 1975. The "A7L" designation is used by NASA as the seventh Apollo spacesuit designed and built by ILC Dover.
// Дальше — en.wikipedia.org
Between Apollos 7 and 14, the two astronauts who would perform the moonwalks, the Commander (CDR) and Lunar Module pilot (LMP), had suits with six life support connections, placed in two parallel rows at the chest and waist.
While the Command Module pilot (CMP) had a suit with only three – as he would remain in the spacecraft during the entire mission, and his suit had to only protect him if the spacecraft would either depressurize or catch on fire (similar in nature to Apollo 1, but on a somewhat lesser scale due to a change in atmospheric makeup and pressure on the launchpad – 60% oxygen and 40% nitrogen at 14.7 psi).
Another difference, besides the number of connectors, were the number of layers. Lunar crews wore suits with a total of 21 layers, including the five-layer pressure suit assembly, and a three-layer specialized "union suit" with plastic tubing which circulated cooling water to cool the astronaut down, minimizing sweating and fogging of the suit helmet (see: Liquid Cooling and Ventilation Garment). Command module pilots wore a three-layer cover layer for fire protection and a simpler UNION SUIT without the plastic tubing; his cooling coming directly from the flow of oxygen in his suit.
All A7L suits featured a vertical zipper that went from the shoulder assembly of the suit down to the crotch. It too was covered by a flap, with the suits for the commander and lunar module pilots featuring a patch of "Chromel-R" woven steel (the familiar silver-colored patch seen especially on the suits worn by the Apollo 11 crew) for abrasion protection from the life support backpack. Chromel-R is also used on the uppers of the lunar boots and on the EVA gloves.
Был ещё какой-то отстегивающийся слой -
"cover layer," which was designed to be fireproof after the Apollo 1 launchpad fire, was attached to the pressure suit assembly with Velcro, and was removable for repairs.
Странно, что так всё туманно описывается.
Вообще все Space suits
Space suit
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This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. (January 2010)
Orlan space suit, worn by astronaut Michael Fincke outside the International Space Station
…
// Дальше — en.wikipedia.org
Точно НЕ два вида костюмов для полётов на Луну
(это типа конструктора из различных слоев, надеваемых один на другой и комбинируемых в разных вариантах) -
1.Intravehicular suits include following units:
fecal containment subsystem
constant wear garment underclothes
biomedical belt sensor to collect biomedical informations
urine collection transfer assembly urine collecting unit
torso limb suit assembly(TLSA) body of space suit
integrated thermal micrometeoroid garment(ITMG) pressure skin
pressure helmet cover astronaut's head
pressure glove cover astronaut's hand
communications carrier make comminication with Houston
2. Extravehicular Mobility Units was composed by remove constant wear garment from Intravehicular suits and add following 5 units:
liquid-cooling garment underclothes cooled by liquid
lunar extravehicular visor assembly(LEVA) wear on the pressure helmet
lunar extravehicular glove assembly wear on the pressure glove
lunar overshoe wear on the boots of TLSA
cover which fits over umbilical connections
Integrated Thermal MicroMeteoroid Garment (ITMG) - ???
Получается, те двое которые лазили по пылюке на Луне, потом в этих же самых костюмчиках - летели спокойненько домой?