Nov 6, 2018 · The flashes were from Cerenkov radiation passing though their eyeballs, occurring as often as 2 per minute on the Apollo missions. Of the 39 astronauts to suffer from cataracts later in life 36 had flown on Apollo missions. On near Earth missions such as visits to space stations, the Earth's magnetic field provides some protection.

Jan 10, 2019 · $\begingroup$ from your page: "At 2:50:37.79 GET (0141:37 AEST), the S-IVB stage burned for 5 minutes 17.7 seconds to boost the spacecraft’s velocity by 7,451.2 kilometres per hour, and Apollo 8 left Earth orbit and headed for …

Feb 28, 2018 · Temperature and humidity within the Apollo Command Module was controlled with a system of heat exchangers, electrical heaters and water-glycol (62.5 % ethylene glycol and 37.5 % water) coolant loops. The coolant loop was used to cool the electronics mounted on cold plates and also the atmosphere of the capsule.

Dec 8, 2014 · I was looking at some diagrams for the Apollo spacecraft, which I found to be interesting. It's clear that there's two separate enclosures that astronauts could reside in (the lunar module and command module). However, there is a massive rocket nozzle in between each habitable enclosure. This leads me to a few related questions.

May 29, 2018 · After Apollo 13 an extra 400 Ah battery was added to the SM. The Shuttle also used 28 V DC from 3 fuel cell stacks, 3 DC buses and 3 inverters for 3 AC buses with 115 V 3 phase AC 400 Hz current. 3 single phase inverters were used for each 3 …

Sep 10, 2017 · The Apollo spacecraft consists of three major parts:. The Command Module (CM), a conical module where the three crew members live during launch from Earth and travel to and from the moon, and which re-enters Earth's atmosphere alone at the end of the trip;

Jul 22, 2019 · This report investigates the feasibility of communicating with Apollo spacecraft behind the moon and of communications between two such spacecraft. Two satellite geometries are considered for signal relay: a libration or "Hummingbird" satellite anchored 65,000 km behind the moon and a lunar-orbiting relay satellite at 1000-km altitude.

The quote is not quite correct about going into a "permanent orbit about the sun". They were in orbit about the Earth before entry, and would remain in orbit about the Earth if they skipped out or missed completely. Apollo 13's entry velocity is documented in Apollo by the Numbers. With that and the entry interface of 400,000 ft altitude, it is ...

Dec 19, 2019 · The spacecraft is still in Earth orbit and is being pulled by Earth’s gravity during its entire trip to the Moon. During the powered thrust phase known as TLI (trans lunar injection) the maximum speed reached by the Apollo 11 spacecraft was 10.8 km/sec (24,200 mph) when it was at an altitude of about 300 km (180 miles).

May 29, 2019 · This list of major Apollo manufacturers is from Chariots for Apollo. Which of them still make aerospace (spacecraft or aircraft) components today? AC Delco: inertial measuring unit, gyroscopes; Aerojet-General: service module engine; Aeronca: honeycomb panels; AiResearch: command module environmental control; Allison/Airite Products: fuel ...