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Comparison of continuous and discontinuous collisional bumpers: dimensionally scaled impact experiments into single wire meshes
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Bernhard, Ronald Cintala, Mark Haynes, Jerry See Sr., Thomas Davidson, William Cardenas, Frank Hoerz, Friedrich |
| Copyright Year | 1992 |
| Description | An experimental inquiry into the utility of discontinuous bumpers was conducted to investigate the collisional outcomes of impacts into single grid-like targets and to compare the results with more traditional bumper designs that employ continuous sheet stock. We performed some 35 experiments using 6.3 and 3.2 mm diameter spherical soda-lime glass projectiles at low velocities (less than 2.5 km/s) and 13 at velocities between 5 and 6 km/s, using 3.2 mm spheres only. The thrust of the experiments related to the characterization of collisional fragments as a function of target thickness or areal shield mass of both bumper designs. The primary product of these experiments was witness plates that record the resulting population of collisional fragments. Substantial interpretive and predictive insights into bumper performance were obtained. All qualitative observations (on the witness plates) and detailed measurements of displaced masses seem simply and consistently related only to bumper mass available for interaction with the impactor. This renders the grid bumper into the superior shield design. These findings present evidence that discontinuous bumpers are a viable concept for collisional shields, possibly superior to continuous geometries. |
| File Size | 23253241 |
| Page Count | 61 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19920016144 |
| Archival Resource Key | ark:/13960/t1hj1fd68 |
| Language | English |
| Publisher Date | 1992-04-01 |
| Access Restriction | Open |
| Subject Keyword | Structural Mechanics Spacecraft Shielding Damage Assessment Impact Prediction Space Debris Bumpers Glass Target Thickness Fragments Spheres Impact Tests Impact Damage Hypervelocity Impact Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
