Engineering Constraints
NEW Engineering and Landing Constraints Nov, 2001
- Ellipse, (revised
doc) updated
Jan 2001
- Varied Ellipse in 2.5° Increments
- MER A - Oriented 66° to 86° from 77km x 30km at 15°S to 219km x 30km at 5°N
- MER B - Oriented 79° to 99° from 338km x 30km at 10°N to 130km x 30km at 10°S
-
Elevation
- Entire Ellipse below 1.3 km (MOLA Geoid) for parachute
- Atmosphere Column Density (VL1 Surface P)
- Low altitude winds less than 20 m/s
- TES mean T
- GCM Variability
-
Slope
- Slope less than 15°
- RMS Slopes less than 6°
- MOLA inter and intra shot slopes
- Rock Abundance
- Less than 1° area covered by rocks greater than 50 cm high
- Total rock abundance less the 20° - IRTM Data (Christensen)
-
Fine Component Thermal Inertia
- CGS Units greater than 3-4 10-3 - IRTM Data (Christensen)
- Extreme Dust 125-170 SI
- Same as TES low TI and high Albedo Unit A (Mellon et al.)
-
Dust
- Must have radar reflective surface greater than 0.05
- Load bearing surface
-
Hazard Free in MDIM
- Smooth, flat looking in MDIM
- Avoid bumps, hills, etc.
- Avoid all obvious fresh craters greater than 5-10 km diameter