During his 1973 mission to the Skylab space station, failures in two of the thrusters in his Apollo command module called into question whether the vehicle could be used to return the astronauts safely to Earth, and led to a rescue investigation into how best to bring them home.
the designers of the Apollo Command Module had to deal with large uncertainties in predicting the aerothermodynamic environment and in the response of the ablative thermal protection system to that environment
since the stagnation- point convective heating rate varies as the flight velocity cubed [see Eq.(5)] and since radiative heating becomes a factor for a capsule entering the earth's atmosphere at superorbital reentry speeds [see Eq.(6)], the Apollo Command Module is subjected to extremely high heating rates
for applications, such as the return of manned capsules from extra-terrestrial missions, e.g., the Apollo Command Module, the vehicle re-enters the earth's atmosphere at super-orbital speeds at relatively high altitudes, i.e., in the upper right-hand corner of Figs. and 3. The initial flight-path angle is relatively small
the designers of the Apollo Command Module had to account for strong real-gas effects (including non-equilibrium thermochemistry, ionization, and radiation from the gas cap to the vehicle's surface and from the vehicle's surface back into the shock layer) and low-density effects [including low Reynolds-number viscous/inviscid interactions and (possibly) noncontinuum flow models]
these parameters are presented in Fig. for the trajectory of an aeroassisted space transfer vehicle (ASTV), for two re-entry trajectories for the Apollo Command Module (an overshoot trajectory and a 20-g limit trajectory), for the best-estimated trajectory for the re-entry of the STS-2 (Shuttle Orbiter), for the flight of a single-stageto-orbit (SSTO) vehicle powered by an air-breathing engine, and for the trajectory for a slender (relatively low-drag) re-entry vehicle
The AmpCo Corporation in Lowell, Massachusetts employed about a dozen people, predominantly middle-aged women to pump a special epoxy resin by hand with caulking guns into 380,000 one-inch-square holes in the ablative heat shield of the Apollo command module.
because of their very high-drag characteristics, the early manned entry vehicles (e.g., the Mercury, the Gemini, and the Apollo Command Module) and winged vehicles that enter at high angles-of-attack (e.g., the Space Shuttle Orbiter and the Hermes) had mid-range values of beta
The Apollo Command Module used on Skylab 3 is currently on display at the visitor's center of the NASA Glenn Research Center at the Great Lakes Science Center in Cleveland, Ohio.
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Synonyms and analogies of "apollo command module" in English