The Next Space Age
2008 ed. Christopher Mari BVT 629.4011 NEX
Reprinted magazine and newspaper articles, 2003 to 2008
Dated, many of the programs described delayed or cancelled.
- p10 Orion heat shield is PICA, phenolic impregnated carbon ablator, a matrix of carbon fibers embedded in a phenolic resin. Outer surface burns off and carries off heat, charred remainder is heat resistant. Used for 13km/s re-entry of Stardust spacecraft in 2006. Segmented.
- p11 Orion uses parachutes, jettisons heat shield, may land with airbags after 8m/s descent.
- hmm - a = v²/2d, wag d=1 meter, a = 32 m/s² or 2 gees.
- p14 Orion: small team at Lockheed Martin, what did Apollo do?
p15 CM+SM+Escape < 50,250 pounds approx 23 tonnes
- p21 Shackleton Crater south pole, 80% sunlight over year
- p22 regolith compacted digging difficult, abrades bearings
- p23 Heat surface with microwaves, glass and metallic iron, 50W/cm³ to 1700C in 10 seconds
- 1990s, Lawrence Taylor U. Tenn., 1 centimeter deep (thermal conductivity?) 5 MJ/m²
- p24 Larry Clark Lockheed Martin - oxygen from regolith iron oxides, 1300 to 1500℉
- p104 Phoenix lander, Mars north pole finds ice June 2008
- p119 Deep Space Network, 5e-5 m/s velocity and 3 m range
- p119 Cassini camera three microradians
- p122 RTG Pu238 halflife 88y, April 2001 Pioneer 10 1e-21 watt (per what?)
- p126 acceleration anomaly (since solved, heat reflections off antenna)
- p135 exoplanets ... really old stuff, pre-Kepler