ESAMechanismsSpace EngineeringMechanical
MechanismsMechanisms standard
Technology areas
Contactless power and data transferDampers developmentDeployable BoomsElectrical MotorsElectric Propulsion Pointing Mechanisms (EPPM)High Accuracy Position and Scanning MechanismsHold-Down and Separation SystemsLaunch Vehicle actuatorsMicro Electro Mechanical SystemsMultibody DynamicsMulti-purpose Rotary and Linear ActuatorsSolar Array Drive Mechanisms (SADM)Sampling Devices for Planetary ExplorationTribology
Multibody and Advanced Simulation
Multibody & Advanced Simulation Team
Project support activities
Project support activities
Contact us
Bookmark and Share
printer friendly page
Drill with hammering mechanism (DHM) (05-07)
This study considered the implementation of hammering/impacting mechanism in rotary coring drills, to increase their efficiency when drilling hard rock.
In a Drill with hammering mechanism (DHM), a cam-hammer mechanism, that uses the sudden release of a compressed spring, produces 1 Joule impact energy at a nominal frequency of 1 Hz. The challenge of the mechanism design and realisation laid in the very limited room available for its implementation, mainly the reduced diameter (24 mm max. available for the accommodation of the mechanism).  
The Cam-hammer cross-section view
The Cam-hammer cross-section view
For the test a dedicated drill Test Equipment and a set of mock-up drill tools (both commercial and on purpose made) were used.

The prototype was manufactured and extensively tested in different types of hard materials and in different operative condition.

Drill test equipment characteristics and pictures
Drill test equipment characteristics and pictures
The DHM prototype has proven its effectiveness by drilling into granite (compressed strength 160 MPa), and getting samples, with low thrust applied (e.g. 100N) and with very low power consumption (e.g. 5-10W) at penetration speeds of about 0.02 mm/minute.
New thin corer and Marble hole (marked in red)
New thin corer and Marble hole (marked in red)
This study was performed by Galileo Avionica Milan teaming with Helsinki University of Technology.
Last update: 2 February 2011

Sampling Devices for Planetary Exploration
Soil sampling devices
SSA/DT (95-97)CNSR SAS-1m (90-95)CNSR– SAS-3m (88-90)
Mars and future planets
Ultrasonic Drill Tool (05-07)Instrumented Mole System (IMS) (02-06)Sampling Mole (99-02)Mobile Penetrometer: “Mole” (96-97)Mobile Instrument Deployment Device (MIDD) (94-02)Current and future developments
   Copyright 2000 - 2011 © European Space Agency. All rights reserved.