Database of funded US Department of Defense (DoD) component grant proposals with abstracts: Does it exist? I'm looking for a database of funded grant proposals with abstracts for various DoD components (e.g., DARPA, AFRL, etc.), similar to the one for the NSF. 

The Federal Business Opportunities (a.k.a. FedBizOpps) website exists, but it doesn't list the abstracts, the information it does give is not really useful, and the search capabilities on that site are kind of clunky. 

Does such a database of funded grant proposals with abstracts for
US DoD components exist?
For most DoD contracts, there is no database or similar system that allows you to get any sort of abstract.  I know this because our research librarians, who track this sort of thing and are quite good at their jobs, have told me definitively that this is the case.

If you really want information about specific projects, you could file a FOIA request, using something like the USA Spending site referenced in Aleksandr Blekh's post.  Note, however, that the intricacies of DoD contracting mean that it may be rather difficult to actually tell which contracts are associated with which programs: for example, many DARPA contracts are actually not concluded by DARPA, but by other DoD organizations acting on their behalf.  FFRDCs and other sorts of special cases further complicate matters.