From what kind of material Apollo capsule heat shield was built?

[Pawelk198604]

I looking for specification of apollo spacecraft, i'm curious?

[softweir]

I tried to find documents with the specifications, but THIS was the best I could find.

[Cocoon90]

I know that most of heat shields are just glass or ceramic compounds, since these materials have the best resistance against heat. Try this link on wikipedia and check the picture in the top left corner.

[Soda Popinski]

I recall the Mercury program used cork, and think I remember watching "When We Left Earth" mentioning cork also being used on Apollo. Looks like it wasn't in the heat shield though.

Here's a link to some NASA material that mentions it.

The ablative material selected for the TPS is designated Avco 5026-39G and con-

sists of an epoxy-novalac resin reinforced with quartz fibers and phenolic microballoons.

The density of this .material is 31 lb/ft . The ablator is applied in a honeycomb matrix

that is bonded to a stainless-steel substructure. The phenolic honeycomb is first bonded

to the stainless-steel shell with HT-424 adhesive, and then the ablator is inserted into

the individual honeycomb cells with a hypodermic device that is similar to a caulking gun.

[PakledHostage]

Try this link on wikipedia

You necro'd an eight month old thread to provide us with a link to a Wikipedia page?

[Roastduck]

You necro'd an eight month old thread to provide us with a link to a Wikipedia page?

I shook my head so hard, my neck popped.