  We are developing a silica-aerogel-based cosmic dust collector for use in the
Tanpopo experiment to be conducted on the International Space Station. The mass
production of simple two-layer hydrophobic aerogels was undertaken in a
contamination-controlled environment, yielding more than 100 undamaged
products. The collector, comprising an aerogel tile and holder panel, was
designed to resist launch vibration and to conform to an exposure attachment.
To this end, a box-framing aerogel with inner and outer densities of 0.01 and
0.03 g/cm$^3$, respectively, was fabricated. The aerogel mounted in the panel
passed random vibration tests at the levels of the acceptance and qualification
tests for launch. It also withstood the pressure changes expected in the
airlock on the International Space Station.
