from the debris cloud. The improved orbital propagator, PROP3D, was developed for the long-term debris environment prediction code LEGEND in 2001. It updates five orbital elements (excluding true anomaly) per time step, given the perturbations of Earth gravity J2, J3, and J4 zonal harmonics, solar and lunar gravity, Jacchia 77 atmosphere, and solar
Orbital Debris Quarterly News Two years after the destruction of the Fengyun-1C meteorological satellite by a Chinese anti-satellite (ASAT) interceptor, the resultant debris cloud remains pervasive throughout low Earth orbit (LEO), accounting for more than 25% of …
As with ERBS, beginning in October UARS will conduct a series of maneuvers to achieve two objectives: (1) remove the 150 kg of residual propellants to prevent future accidental explosions and (2) reduce the orbital lifetime of the spacecraft to the greatest extent possible.
Orbital Debris Quarterly News 2 PROJECT REVIEWS The orbital debris, space surveillance, and astronomy communities lost a valued and beloved friend when John L. Africano passed away on 27 July. John suffered a major heart attack a week earlier while playing racquetball. He was on Maui collecting data on high area-to-mass orbital debris at the time.
They will address the following issues (1) advanced ground-based radar and optical, and space-based in-situ measurements, (2) population and environment modeling, (3) debris mitigation measures, (4) reentry track-ing and survival analysis, and (5) hypervelocity impact testing and shielding design.
studies on the hazards of the orbital debris environment. The new report, “Protecting the Space Shuttle from Meteoroids and Orbital Debris” (December 1997), follows earlier studies on the general orbital debris issue (“Orbital Debris, A Technical Assessment”, 1995) and International Space Station-related
Topics included detection of space debris from the ground using optical and radar methods, in-situ measurements, space surveillance activities, orbit determination methods, re-entry predictions, modeling of the space debris environment, and concepts for debris mitigation & remediation.
meteoroid/orbital debris (MMOD) impact near the hinge line on the #4 starboard payload bay door radiator panel. The features of this impact make it the largest ever recorded on an orbiter payload bay door radiator. The general location of the damage site and the adjacent radiator panels can be seen in Figure 2. Initial
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ODQN 8-1 bar - NASA
available documents related to orbital debris and its research. Also check out the new Reentry section for information on the cur-rent orbital debris work going on in this area. The Orbital Debris Quarterly News has also been given a new design layout and is incorporated in this January 2004 issue. Going to the Orbital Debris Quarterly News
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INSIDE… - NASA
Orbital Debris Program Office. Debris Assessment Software (DAS) permits a simple, conservative evaluation of reentry risk, is easy to use, and is available to the public via the NASA orbital debris website (www.orbitaldebris.jsc.nasa.gov). For a more detailed, high fidelity risk assessment, the Object Reentry Survival Assessment Tool