By Space Studies Board Ad Hoc Committee on the Assessment of Mission Size Trade-Offs for Earth and Spac
Document addresses basic problems with challenge structure within the nation's medical house application and responds to the FY99 Senate convention record which asked that NASA fee a learn to evaluate the strengths and weaknesses of small, medium, and massive missions. Softcover.
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Additional info for Assessment of Mission Size Trade-Offs for NASA's Earth and Space Science Missions
54 The WIRE cryogen was subsequently quickly expended. The electronics box design had not been peer-reviewed and other system reviews did not focus on analyzing it. TERRIERS, a part of the Student Explorer Demonstration Initiative (STEDI), was launched in May 1999 to study how the ionosphere affects global telecommunications systems. The satellite was built and launched in 4 years for approximately $4 million. A wiring error caused the spacecraft’s attitude control to malfunction and its solar arrays to point away from the Sun.
The spacecraft was to include a high-resolution optical element with stereo imaging capabilities that would gather useful environmental data. The instrument development costs and schedule grew unacceptably large. WIRE was launched March 4, 1999, aboard a Pegasus XL launch vehicle. WIRE’s mission was to conduct infrared observations of astronomical objects. 54 The WIRE cryogen was subsequently quickly expended. The electronics box design had not been peer-reviewed and other system reviews did not focus on analyzing it.
However, as noted in Chapter 1, international astronomy and astrophysics missions often fit into the medium class and give the discipline a better balance overall. Unlike NASA’s plans for astronomy and astrophysics, which favor small and large missions, its plans for the planetary science program emphasize medium and larger platforms, which can accommodate the power and fuel resources needed to travel to other planetary systems, as discussed elsewhere in this report. , those where samples must be returned).
Assessment of Mission Size Trade-Offs for NASA's Earth and Space Science Missions by Space Studies Board Ad Hoc Committee on the Assessment of Mission Size Trade-Offs for Earth and Spac