In sci.space.policy message
web.com, Sun, 4 Jun 2017 01:42:27, JF Mezei jfmezei.spamnot@vaxination
..ca posted:

...

Of course, the propulsion module isn't recovered.

You mean "Falcon second stage". After separation from the Dragon, it
continued, to do its own thing; it may be still up there, for tests.

Conceptually, would it be possible to make the propulsion module
re-renter and be re-usable? (thinking a heat shield on its top (against
Dragon,s heat shield) so it would re-enter head first.

It is sufficiently conceptually possible, so that SpaceX are intending
to start attempting second stage recovery quite soon. As was done with
first stages, the plan is (I think) to attempt partial recoveries first
- i.e. don't provide a landing place until tests have demonstrated
coming down at the chosen place, the correct way up, and at near enough
zero velocity.

If you were to read a few reputable and relevant web sites (etc.), you
would not need to ask such questions.

In this case, search for falcon second stage recovery .

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