Eggsteroids viking lander location

Elizabeth Howell is a contributing writer for who is one of the few Canadian journalists to report regularly on space exploration. She is pursuing a . part-time in aerospace sciences (University of North Dakota) after completing an . (space studies) at the same institution. She also holds a bachelor of journalism degree from Carleton University. Besides writing, Elizabeth teaches communications at the university and community college level. To see her latest projects, follow Elizabeth on Twitter at  @HowellSpace .

The final set of components to be modeled were the boom supports and guides: SSAA Boom Guides Right- 4000x2812 MB SSAA Boom Guides Exploded Right- 4000x2812 MB
Here are the support guides fitted to the surface sampler:
SSAA Housing Left-Front- 4000x2812 MB
Here is the unit in place on the overall (work-in-progress, very incomplete) Viking lander:
VL With SSAA and SSCH Extended Sidebeam 2 4000x2812 MB VL With SSAA Center- 4000x2812 MB

Here is a comparison between actual Viking lander hardware (photographed at the Virginia Air and Space Center, and the Smithsonian National Air and Space Museum) and the model:
HGA Deployment Mech 4000x2812 MB
This is the deployment mechanism shown in place on the work-in-progress lander (the actual HGA would be attached to the top-most flange of the short vertical elbow tube):
HGA Deployment Mech Back-Left In- 4000x2812 MB
Close-up of the deployment mechanism hub; the clothespin-like device on the left is the uplock, and the governor is within the right end of the hub:
HGA Deployment Mech Back-Right Close- 4000x2812 814 KB
Close-up of the deployment mechanism, showing the two sets of nine-layer constant-force springs that power the deployment mechanism:
HGA Deployment Mech Front-Left Close- 4000x2812 1010 KB

In the final checkout before descent from the orbiter, it was found that one of the four radars designed to record horizontal motion was erratic so the lander was told by radio command to ignore its readings. Had the radar erroneously reported rapid side motion, this could have led the lander's computer to order thrusts in the opposite direction. As James S. Martin Jr., the project manager put it this morning, such thrusts could have started the lander on rapid horizontal flight, over the martian surface and led to "catastrophic failure." The lander carried an extra radar in case of such trouble, but was designed to operate normally on three such instruments.

Eggsteroids viking lander location

eggsteroids viking lander location

In the final checkout before descent from the orbiter, it was found that one of the four radars designed to record horizontal motion was erratic so the lander was told by radio command to ignore its readings. Had the radar erroneously reported rapid side motion, this could have led the lander's computer to order thrusts in the opposite direction. As James S. Martin Jr., the project manager put it this morning, such thrusts could have started the lander on rapid horizontal flight, over the martian surface and led to "catastrophic failure." The lander carried an extra radar in case of such trouble, but was designed to operate normally on three such instruments.

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