Average obligated amount per year since period start.
Portion of total contract value already obligated.
Share of total value represented by subawards.
THE PURPOSE OF THIS WORK IS TO PROVIDE GROUND TRUTH TO MODELS DESCRIBING THE FRAGMENTATION OF AIRBURSTING ASTEROIDS DURING ATMOSPHERIC ENTRY, BY INVESTIGATING FROM DOCUMENTED METEORITE FALLS A NEWLY IDENTIFIED TWO-STEP PROCESS OF FRAGMENTATION THAT DESCRIBES THE ENERGY DEPOSITION PROFILE (BOLIDE LIGHTCURVE) AND THE STREWN FIELD PATTERN OF METEORITES RECOVERED ON THE GROUND. THE WORK WILL STUDY THE LIGHTCURVES AND METEORITE STREWN FIELDS OF SOME 70 CAMERA-DOCUMENTED METEORITE FALLS THAT HAVE BEEN RECOVERED. THE GOAL OF THE PROPOSED WORK HERE IS TO INVESTIGATE IF THIS TWO-STEP FRAGMENTATION BEHAVIOR IS COMMON FOR OTHER SMALL ASTEROID AND METEOROID IMPACTS (OBJECTS A FEW TENS OF CM UP TO 3-M DIAMETER) AND, IF SO, IF THAT FINAL DISRUPTION IS DIAGNOSTIC FOR THE MATERIAL STRENGTH AND EARLIER FRAGMENTATION BEHAVIOR OF ASTEROIDS OF DIFFERENT METEORITE TYPES.
Task order obligations
Estimated months remaining until end of performance.
Period of performance
74% of period elapsed
Awarding Agency
NANATIONAL AERONAUTICS AND SPACE ADMINISTRATION
Code: 8000
Loading contract activity data...
Modification ID | Description | Action Date | Obligated Amount | Action Type |
|---|---|---|---|---|
Subaward # | Subawardee | Description | Amount | Action Date |
|---|---|---|---|---|