The federal government funds R&D through multiple mechanisms: SBIR (Small Business Innovation Research) and STTR (Small Business Technology Transfer) grants for small businesses and universities; BAAs (Broad Agency Announcements) for open research topics; OTAs (Other Transaction Authority) for prototype and follow-on production; cost-plus contracts for large R&D programs; and cooperative agreements. NIH, DARPA, DOD, DOE, NSF, NASA, and ARPA-E are major R&D funders.







