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Hi Everyone, The major milestone this past week was the deployment of the reflector antenna/boom assembly (RBA), which refers to a 5-meter (~16 foot) long boom that holds a 6-meter (~20 foot) diameter antenna at the end of it. For launch the RBA was folded against the spacecraft to fit within the launch vehicle fairing. The boom and antenna together weigh 58 kilograms (127 pounds). Yes, super light for something that size. The boom is a carbon composite structure, made of multiple layers of carbon fiber cloth that are impregnated with a special resin, then baked to create a structure...

Узнать больше О SMAPPING with Erika: Antenna and Boom Deployment »

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By Kristen Weaver, posted 02.03.15 15:30

Last Friday, February 27th, was the one-year anniversary of the launch of the Global Precipitation Measurement Mission Core Observatory, and coinciding with that event, released its first global map of rainfall and snowfall, covering the period from April 2014 to September 2014. The data map combines measurements from 12 satellites and the GPM Core Observatory, which serves to unify the data from all the satellites, like the lead violin in an orchestra tuning the rest of the instruments.  The result is NASA's Integrated Multi-satellite Retrievals for GPM data product, called IMERG,...

Узнать больше О GPM's First Anniversary »

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Hi Everyone, A lot has happened since my last posting. The mission operations team has been hard at work testing the spacecraft and learning its intricacies. Having a new satellite in space is like driving a new car, it takes a little while to learn how it behaves and reacts. This past week we’ve been testing subsystems and making sure that temperatures and voltages are within range. Also, we have transitioned the spacecraft to point directly at the ground (nadir). While not everything has behaved as expected, the team has addressed some minor yet unexpected issues quickly and is making...

Узнать больше О SMAPPING with Erika: Mission Operation »

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WOW, WOW, WOW! Early Saturday morning, January 31, 2015, everything was a GO for the SMAP launch except the high altitude winds were too strong to proceed. Everyone was on edge and ten minutes before the scheduled launch time things turned for the better. The wind situation was deemed “green” and it was safe to continue. Whew! The launch itself was an exhilarating experience. As the countdown reached the final two seconds there was a sudden boom, followed by a bright yellow/orange glow and a white cloud that mushroomed to the sides of the rocket. SMAP soared into the sky much faster than I...

Узнать больше О SMAPPING with Erika: The Launch »

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I was born and raised in Michigan’s Upper Peninsula.  If you’re unfamiliar with this extreme northern region of Michigan, it is meteorologically famous for its snow.  Lots of snow.  Insane amounts of snow.  Sled-from-your rooftop piles of snow (see below image). Driving a car in this winter wonderland is difficult since pavement is merely a rumor on most streets from November through April.   While snow provides many anxious driving moments, it is also cherished for creating breathtaking winter landscapes and for providing a wide variety of winter outdoor...

Узнать больше О Measuring Snowfall with Rulers...and Satellites »

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