SBIR/STTR Research Award
IMPACT MECHANISM FOR SEAWATER ROCK DRILL
Award amount
$202,485Program and phase
SBIR · Phase IIAward year
1993Award details
- Awarding agency
- Department of Defense
- Branch
- Navy
- Recipient company
- CREARE LLC
- Proposal award date
- Not reported
- Contract end date
- Not reported
- UEI
- JDKYAKDT4TT6
- Solicitation number
- Not reported
- Topic code
- Not reported
Research abstract
An innovative pistonless impact mechanism for a seawater hydraulic rock drill is proposed. Compared to the current poppet-kicker port cycle, and poitentially higher impact energy. The proposed mechanism eliminates heavily loaded sliding elements, a chief problem in current mechanisms. The pistonless impact mechanism requires no protective coatings or complex, close tolerance machaning. It relies on abrupt deceleration of a rapidly moving water column to create a waterhammer at the bottom of the drive cylinder. By simplifying the impact mechanism, it offers increased reliability and lower manufacturing costs while retaining compatability with existing seawater hydraulic power supplies. In Phase I, we will design a waterhammer impact mechanism and perform proof-of-principal tests to demonstrate the feasibility of the impact mechanism. If proven feasibile, we will design a waterhammer-driven rock drill to be fabricated and tested in Phase II.
Technology keywords
Not reported
Research funding history
1,365 SBIR/STTR records share this UEI (1983–2026). Reported award amounts total $507,020,394. Reported amounts are not federal obligations.
Phases: Phase I, Phase II, Phase II – Direct to Phase II
Agencies: Department of Defense, National Aeronautics and Space Administration, Department of Health and Human Services, Department of Energy, Department of Transportation, Department of Commerce