Subscribe to our free daily newsletters
. 24/7 Space News .




Subscribe to our free daily newsletters



TECH SPACE
NASA-Developed Technologies Showcased on Dellingr's Debut Flight
by Lori Keesey for GSFC News
Greenbelt MD (SPX) Aug 03, 2017


Principal Investigator Allison Evans has repurposed an old thermal-control technology specifically for the CubeSat platform. Credits: NASA/W. Hrybyk

Along for the ride on Dellingr's maiden journey is a suite of miniaturized NASA-developed technologies - one no larger than a fingernail - that in many cases already have proven their mettle in suborbital or space demonstrations, boosting confidence that they will perform as designed once in orbit.

Scientists and engineers at NASA's Goddard Space Flight Center in Greenbelt, Maryland, built all the instruments, primarily with research-and-development program funding.

The Ion-Neutral Mass Spectrometer, developed by Goddard Principal Investigator Nikolaos Paschalidis and his team in less than a year, is a complicated instrument designed to sample the densities of neutral and ionized atom species in the atmosphere. During the Dellingr mission, it will measure the equatorial ionosphere, the atmospheric layer that affects the transmission of radio waves.

The team initially flew the instrument on a previous CubeSat mission. Although the instrument gathered "beautiful" ion-composition counts of hydrogen, helium, and oxygen, the CubeSat bus proved unreliable and the mission was aborted six months after launch, Paschalidis said.

"The immediate plan with Dellingr is to extensively prove the instrument's functionality. Assuming all goes well, we want to collect as much data as possible, calibrate for spacecraft attitude and location, analyze the data, and plot ion and neutral composition and densities as a function of orbit. This by itself is a unique data set," Paschalidis added.

Boom and No-Boom Magnetometer Systems
Two miniaturized magnetometer systems, developed by Goddard Principal Investigators Eftyhia Zesta and Todd Bonalsky, also were successfully demonstrated earlier this year aboard a sounding-rocket mission from Poker Flats, Alaska.

On Dellingr, these instruments are expected to show a dramatic improvement in the accuracy and precision of miniaturized magnetometers by using a never-before-tried technique involving boom and no-boom systems.

Included in this observing technique is one thumbnail-sized magnetometer positioned at the end of a deployable boom and a couple sensors positioned inside Dellingr.

The purpose of the internal sensors is measuring the magnetic fields, or "noise," generated by the spacecraft's torquers, solar panels, motors, and other hardware. Sophisticated algorithms that Zesta's team created then will analyze the external and internal magnetometer data to subtract spacecraft-generated noise from the actual science data.

"CubeSats, like any spacecraft, will be noisy; they are magnetically unclean," Zesta explained, adding that to avoid the problem in more traditional spacecraft, the magnetometer is placed at the end of a long boom.

"Even with a one-meter (three foot) boom - unless there is a magnetic cleanliness program - you will need to use algorithms to get rid of bus noise. Algorithms are the only way to get scientific value from your data."

In comparison, the Dellingr the boom is only about 22-inches long and it is not magnetically clean, Zesta said. "We absolutely needed to develop noise-cancellation algorithms if we wanted to get any useful science data."

The Diminutive DANY
Deploying the magnetometer boom and UHF antenna is a miniaturized device called the Diminutive Assembly for Nanosatellite Deployables, or DANY. Created by technologist Luis Santos, it acts as a pin puller.

It operates much like a car-door latch. Affixed to the exterior of Dellingr, it holds the boom and antenna in place during launch and then, upon command, applies a current that activates a heating element, which weakens a plastic device holding the retaining pins. Once Dellingr reaches its intended obit, the satellite activates the heating element and the deployables will swing open to begin operations.

Goddard Fine Sun Sensor
Another technology making Dellingr's debut flight is the Goddard Fine Sun Sensor, or GFSS, designed specifically for CubeSats. The panel-mountable device will gather digital data orienting onboard instruments to the sun.

As with the other Dellingr instruments, improvements are afoot. Principal Investigator Zachary Peterson is taking lessons learned from the Dellingr effort to improve GFSS's accuracy and lower its power consumption. Other flight opportunities are planned.

Thermal-Control Technology
In addition to gathering or enabling the collection of scientific data, Dellingr will demonstrate technology. Principal Investigator Allison Evans is miniaturizing an older thermal-control technology that requires no electronics and consists of louvers that open or close, much like venetian blinds, depending on whether heat needs to be conserved or shed.

During the flight, she wants to prove the louvers will operate as expected in a space environment.

The device consists of front and back plates, flaps, and springs. The back plate is painted with a white, highly emissive paint and the front plate and flaps are made of aluminum, which aren't as emissive.

The bimetallic springs do all the work. They are made of two different types of metal. Attached to the highly emissive back plate, the springs uncurl if one of the metals gets too hot, forcing the flaps to open. When the spring cools down, it reverts to its original shape and the flaps close.

For the Dellingr demonstration, Evans is flying just one flap/spring combination to help mature the technology in preparation for future missions where the miniature thermal louvers would be an integrated part of the thermal design.

"A mission with a temperature-sensitive instrument or a component that sheds significant amounts of heat only occasionally would be a good candidate for this technology," she said.

For more technology news, go here

TECH SPACE
JV with Russia to build up to 50 satellite solid-state power amplifiers
Moscow (Sputnik) Aug 02, 2017
The head of Space Equipment at Airbus DS stated that SynerTech company and Russian Space Systems is planning to make up to 50 solid-state power amplifiers within the next year. SynerTech company, a joint enterprise of Airbus Defence and Space (DS) aerospace company and Russian Space Systems, is planning to make up to 50 solid-state power amplifiers within the next year, Jean-Pierre Domenge ... read more

Related Links
Technology at NASA
Space Technology News - Applications and Research


Thanks for being here;
We need your help. The SpaceDaily news network continues to grow but revenues have never been harder to maintain.

With the rise of Ad Blockers, and Facebook - our traditional revenue sources via quality network advertising continues to decline. And unlike so many other news sites, we don't have a paywall - with those annoying usernames and passwords.

Our news coverage takes time and effort to publish 365 days a year.

If you find our news sites informative and useful then please consider becoming a regular supporter or for now make a one off contribution.

SpaceDaily Contributor
$5 Billed Once


credit card or paypal
SpaceDaily Monthly Supporter
$5 Billed Monthly


paypal only

Comment using your Disqus, Facebook, Google or Twitter login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle

TECH SPACE
NASA Offers Space Station as Catalyst for Discovery in Washington

Let's cut them off from access to Space

Astronauts gear up for space with tough Russian training

Astronauts grow cucumbers in space to help scientists understand root growth

TECH SPACE
ISRO Develops Ship-Based Antenna System to Track Satellite Launches

India looks to more launches with new facility from 2018

Sea Launch to be modernized for Russia's Soyuz-5 carrier rocket

Navy completes testing fixes on electro-magnetic launch systems

TECH SPACE
For Moratorium on Sending Commands to Mars, Blame the Sun

Tributes to wetter times on Mars

Opportunity will spend three weeks at current location due to Solar Conjunction

Curiosity Mars Rover Begins Study of Ridge Destination

TECH SPACE
China develops sea launches to boost space commerce

Chinese satellite Zhongxing-9A enters preset orbit

Chinese Space Program: From Setback, to Manned Flights, to the Moon

Chinese Rocket Fizzles Out, Puts Other Launches on Hold

TECH SPACE
Airbus DS to expand cooperation with Russia

UK space companies to develop international partnerships

ASTROSCALE Raises a Total of $25 Million in Series C Led by Private Companies

LISA Pathfinder: bake, rattle and roll

TECH SPACE
JV with Russia to build up to 50 satellite solid-state power amplifiers

NASA enhances online scientific tool used by hundreds Worldwide

ARCTEC receives contract for Air Force radar sites in Alaska

WSU physicists turn a crystal into an electrical circuit

TECH SPACE
A New Search for Extrasolar Planets from the Arecibo Observatory

Gulf of Mexico tube worm is one of the longest-living animals in the world

Molecular Outflow Launched Beyond Disk Around Young Star

Breakthrough Starshot launches tiny spacecraft in quest for Alpha Centauri

TECH SPACE
New Horizons Video Soars over Pluto's Majestic Mountains and Icy Plains

Juno spots Jupiter's Great Red Spot

New evidence in support of the Planet Nine hypothesis

NASA's New Horizons Team Strikes Gold in Argentina




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News






The content herein, unless otherwise known to be public domain, are Copyright 1995-2017 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. All articles labeled "by Staff Writers" include reports supplied to Space Media Network by industry news wires, PR agencies, corporate press officers and the like. Such articles are individually curated and edited by Space Media Network staff on the basis of the report's information value to our industry and professional readership. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement