Preparing LENA to Pump Down

To assure that the cleanliness of LENA would be maintained in Denver, a "clean tent" was established. It made working a bit inconvenient, but our team responds best under adverse conditions anyway.


To evaluate the beam, a Quantar was mounted on the side of LENA so that we could rotate the Quantar into the beam at will.


On the spacecraft, the C&DH will be attached to the deck rather than to the instrument. No problem there because the spacecraft rotates. However, in Denver we had to somehow mount the C&DH to the side of LENA so that LENA counld be rotated without stressing the cables.


A specially built flange allowed LENA to be placed into the chamber at Denver.


A gimbal to which LENA was attached allowed us two degrees of motion, polar and azimuthal (where here polar is the 90 degree position sensing direction).


LENA itself is 42 pounds (excluding the harnass and C&DH). Not too bad, actually. The flange, however, is pretty heavy and required a hoist and quite a bit of muscle power (supplied by Brian Peko) to get LENA into the chamber. In fact, we destroyed one hoist (it was made in China) trying to get LENA into the chamber.


And so finally with moist eyes and heavy heart, we said our last goodbyes to LENA as we lowered her into the chamber for pump down. Soon however our minds were frantically dreaming up what to do in Denver for twenty or so hours while LENA (she is a heavy load) pumped down.