LSP – Small Satellite Missions

ELaNa 50: What’s on Board?

LightCube team members inspect the CubeSat prior to integration into the deployer. From left to right: David Ordaz Perez, Chandler Hutchens, Sam Cherian, Christopher McCormick, Ashley Lepham, Raymond Barakat. Photo credit: Jaime Sanchez de la Vega

On NASA’s next Educational Launch of Nanosatellites (ELaNa) mission, a pair of small satellites, called CubeSats, will hitch a ride on SpaceX’s 27th commercial resupply services mission to the International Space Station for NASA.

The ELaNa 50 complement of CubeSats will launch aboard the SpaceX Falcon 9 and Dragon spacecraft this March, from Launch Complex 39A at NASA’s Kennedy Space Center in Florida, along with additional supplies, equipment, and science investigations to be delivered to the crew aboard the station.

The university-built CubeSats are going to space as part of NASA’s CubeSat Launch Initiative (CSLI). Once deployed, the CubeSats will demonstrate technologies to conduct atmospheric experiments and reduce space debris, as well as provide people on Earth the opportunity for an immediate and powerful connection with an object in space.

First Launch for The Natural State

The CSLI program will launch its first CubeSat from Arkansas. Developed at the University of Arkansas, Fayetteville, ARKSAT-1, is a CubeSat measuring 1U, or unit, (about 4 inches cubed). It will illuminate an LED from orbit and use a ground spectrometer to track and perform atmospheric measurements.

ARKSAT-1 team members Samuel Cano (left) and Charles Smith perform final checkout tests on the ARKSAT-1 flight model, with its electronics stack engineering model also shown. Photo credit: University of Arkansas

“It might be the first time this instrument technology is purposefully designed to be done with a CubeSat,” said Adam Huang, principal investigator. “It could be developed into future satellite-based systems using cooperative formations of CubeSats.”

ARKSAT-1’s secondary objective sets out to demonstrate a way to help alleviate the problem of space debris with a lightweight Solid State Inflatable Balloon (SSIB) that can be used to deorbit small satellites after a mission ends. When the balloon on ARKSAT-1 inflates, it will greatly increase the ARKSAT-1’s aerodynamic drag, thereby helping the satellite re-enter and disintegrate safely in Earth’s atmosphere. If successful, the SSIB technology could help reduce the amount of time a small satellite remains “space junk” in low-Earth orbit after its mission has ended.

Helping Others See the Light

LightCube, a 1U CubeSat developed by Arizona State University, Tempe, in collaboration with Vega Space Systems and Mexico’s CETYS Universidad, features a flash bulb that can be controlled remotely by amateur radio operators on Earth who will be able to activate the satellite to produce a brief flash visible from the ground.

The LightCube CubeSat is inserted into the Nanoracks CubeSat Deployer. — The LightCube CubeSat is loaded into the Nanoracks CubeSat Deployer. Photo credit: Nanoracks

“LightCube provides potential users worldwide with the opportunity to telecommand a spacecraft and observe a tangible and immediate response in the night sky,” said Jaime Sanchez de la Vega, principal investigator. “The team hopes that this process inspires users to learn about space, satellites, and related concepts.”

The flash will appear at a brightness similar to the International Space Station, and several commonly available smartphone and computer apps will show when LightCube is overhead and where to look in the sky to see its flash.

Considering the observational environment, the LightCube team conducted an in-depth assessment to confirm that the brief flashes generated will not have a significant impact on astronomy.

In selecting the CubeSats for ELaNa 50, CSLI continues furthering its goal of providing U.S. educational institutions, nonprofits with an education/outreach component, informal educational institutions (museums and science centers), and NASA centers with access to space at a low cost. Through CSLI, NASA’s Launch Services Program pairs selected CubeSats with launches best suited for each CubeSat’s mission and ready date, taking into consideration the planned orbit and any special constraints the CubeSat’s mission may have.

For more information about NASA’s CSLI, visit:

https://www.nasa.gov/directorates/heo/home/CubeSats_initiative

TROPICS Mission Update

After a nominal first stage flight, the upper stage of the rocket shut down early and failed to deliver the TROPICS CubeSats to orbit.

NASA’s Launch Services Program, who managed the launch service for the mission, continues to work with emerging launch providers to deliver low-cost science missions into orbit through contracts that align with commercial practices, using less NASA oversight to achieve lower launch costs.

Small satellites and Class D payloads tolerate relatively high risk and serve as an ideal platform for technical and architecture innovation, contributing to NASA’s science research and technology development. The program offers opportunity for industry developing new launch capabilities.

Liftoff!

Two TROPICS CubeSats have lifted off atop an Astra Rocket 3 from Space Launch Complex 46 at Cape Canaveral Space Force Station in Florida today, June 12, 2022. Launch occurred at approximately 1:43 p.m. EDT.

New T-0 Time Established for Today’s TROPICS Launch

Astra has completed final liquid oxygen conditioning and resumed countdown for the launch of its Rocket 3, carrying two of NASA’s TROPICS CubeSats. Liftoff currently is scheduled for today at 1:43 p.m. EDT.

Launch Countdown Paused

Astra has paused the countdown of the launch of its Rocket 3, carrying two of NASA’s TROPICS CubeSats, to complete final liquid oxygen conditioning on the vehicle. Upon completion, the team will set a new launch time for TROPICS-1.

Mission Facts About TROPICS

TROP:ICS constellation of CubeSats — Three pairs of satellites comprise the TROPICS constellation and will work in concert to provide microwave observations of storms on Earth, measuring precipitation, temperature, and humidity of a storm as often as every 50 minutes. Image Credit: NASA

Each TROPICS satellite is identical – a 3U CubeSat about the size of a loaf of bread and weighing about 12 lbs.

The TROPICS CubeSat payload is a spinning microwave radiometer with highly integrated, compact microwave receiver electronics.

TROPICS satellite measures microwave frequencies ranging from about 90 to 205 gigahertz, which can monitor the atmospheric emissions made by water vapor, oxygen, and clouds in the atmosphere.

TROPICS target altitude is 550 kilometers, and pairs of CubeSats will have three slightly different low-Earth orbits, all at an angle about 30 degrees above the equator.

The TROPICS Pathfinder satellite, a proof-of-concept CubeSat that launched in June of 2021, has captured images of several tropical cyclones, such as Hurricane Ida over the United States, Cyclone Batsirai over Madagascar, and Super Typhoon Mindulle over eastern Japan. The pathfinder satellite has also provided the TROPICS research team an opportunity to fine tune the satellites’ software and operational procedures before the constellation launches. In addition, the pathfinder has already been calibrated and will be able to serve as a calibration reference for the rest of the TROPICS constellation satellites. The TROPICS pathfinder helps the TROPICS CubeSats start producing useful data quickly.

Astra’s Rocket 3 is an expendable, vertically-launched two stage rocket that uses liquid oxygen and kerosene as propellants. It has an overall length of 43 feet and is 52 inches in diameter. Astra designed it to fit inside a standard shipping container. Rocket 3 has five engines on its first stage, and one engine on its second stage.

TROPICS is an Earth venture instrument mission – science-driven, competitively selected, low-cost missions that provide opportunity for investment in innovative Earth science to enhance our capability to better understand the current state of the Earth system and to enable continual improvement in the prediction of future changes.

The TROPICS team is led by Principal Investigator Dr. William Blackwell at Massachusetts Institute of Technology’s (MIT) Lincoln Laboratory in Lexington and includes researchers from NASA, the National Oceanic and Atmospheric Administration (NOAA), and several universities and commercial partners.

NASA’s Launch Services Program at the agency’s Kennedy Space Center in Florida manages the launch service.

Mission Timeline for Today’s TROPICS Launch

Astra Rocket 3 for first TROPICS launch — Astra’s Rocket 3 sits at Space Launch Complex 46 on June 1, 2022, in preparation for the June 12 launch of the first two of six CubeSats that make up NASA’s Time-Resolved Observations of Precipitation structure and storm Intensity with a Constellation of Smallsats (TROPICS) mission. The launch window opens at noon EDT. Photo Credit: Astra

NASA’s TROPICS CubeSats mission is scheduled to launch today, June 12, on an Astra Rocket 3 from Space Launch Complex 46 at Cape Canaveral Space Force Station in Florida. A two-hour window opens at noon EDT.

Here’s a look at some of today’s upcoming milestones. All times are approximate:

COUNTDOWN

Min/Sec Event

+0s Lift-off

+6s Begin Pitch Over

+1min 10s Max-Q

+3min 00s Main Engine Cutoff (MECO)

+3min 05s Fairing separation

+3min 10s Stage separation

+3min 15s Upper stage ignition

+8min 30s Second Engine Cutoff (SECO)

+8min 40s Payload Deployment

Weather 40% Favorable for Today’s Launch at Start of Launch Window

Astra Rocket 3 with TROPICS 1 payload — Astra’s Rocket 3, with NASA’s TROPICS CubeSats, is shown on June 1, 2022, at Space Launch Complex 46 at Cape Canaveral Space Force Station, Florida, in preparation for a June 12, 2022, launch.

Weather officials with Cape Canaveral Space Force Station’s 45th Weather Squadron predict a 40% chance of favorable weather conditions at noon, the start of today’s launch window, with the forecast dropping to 10 percent favorable later in the afternoon.

The primary weather concern at the start of the launch window is a Cumulus Cloud Rule violation. Later in the launch window, concerns include Surface Electric Fields and Lightning rules.

TROPICS mission aims to improve observations of tropical cyclones. Six TROPICS satellites will work in concert to provide microwave observations of a storm’s precipitation, temperature, and humidity as often as every 50 minutes.

Welcome to Launch Day for TROPICS

Astra Rocket 3 with TROPICS payload Launch day has arrived for NASA’s commercial partner Astra. A pair of small satellites wait atop Astra’s Rocket 3 for liftoff from Space Launch Complex 46 at Cape Canaveral Space Force Station in Florida. This mission will send two-shoebox sized CubeSats to low-Earth orbit. A two-hour launch window opens at noon EDT.

This is the first of three planned launches for NASA’s Time-Resolved Observations of Precipitation structure and storm Intensity with a Constellation of Smallsats (TROPICS) mission. Together the three launches will attempt to place six satellites in three different orbital planes to study the formation and development of tropical cyclones, making observations more often than what is possible with current weather satellites. The six TROPICS satellites will join the TROPICS Pathfinder satellite, which is already in orbit.

The six TROPICS satellites will maximize their time over the part of the Earth where tropical cyclones form and will work in concert to improve observations of tropical cyclones. The spread of the satellites means that a satellite should pass over any spot in an area stretching from the Mid-Atlantic region of the United States to the southern coast of Australia about once an hour. TROPICS will provide data on temperature, precipitation, water vapor, and cloud ice by measuring microwave frequencies, providing insight into storm formation and intensification. This new data, coupled with information collected from other weather satellites, will increase understanding of tropical cyclones and improve forecasting models.

Follow launch updates on this blog and stay connected with the mission on social media.

Twitter: @NASA_LSP, @NASAEarth, @NASAKennedy, @NASA, @Astra
Facebook: NASA

NASA to Launch Small Satellites on Next SpaceX Cargo Mission

Middle schoolers are sending their science fair project to space, one of five CubeSats on a ride-share on a Commercial Resupply Services, CRS-25. The CapSat-1 team are three 7th-grade students from the Weiss School in Palm Beach Gardens, Florida. — Middle schoolers are sending their science fair project to space, one of five CubeSats on a ride-share on the 25th Commercial Resupply Services, CRS-25. The CapSat-1 team are three 7th-grade students from the Weiss School in Palm Beach Gardens, Florida. Photo credit: Weiss School

NASA’s Launch Services Program is preparing to send five CubeSats to the International Space Station as part of the ELaNa 45 (Educational Launch of Nanosatellites) mission aboard SpaceX’s 25th Commercial Resupply Services (CRS-25) mission for NASA. Liftoff is scheduled for June 7 from Launch Complex 39A at the agency’s Kennedy Space Center in Florida.

The small satellites were selected through NASA’s CubeSat Launch Initiative, which provides low-cost access to space for U.S. educational institutions, NASA centers, and others to develop and demonstrate novel technologies in space and to inspire and grow the next generation of scientists, engineers, and technologists.

The CubeSats were developed by the Massachusetts Institute of Technology; The Weiss School in Palm Beach Gardens, Florida; NASA’s Ames Research Center in Silicon Valley, California; Embry-Riddle Aeronautical University in Daytona Beach, Florida; and the University of South Alabama in Mobile. The CubeSats will be deployed from the space station.

NASA has selected over 200 CubeSat missions from more than 100 unique organizations representing 42 states, the District of Columbia, and Puerto Rico through the CubeSat Launch Initiative since 2010. To date, 134 CubeSat missions have launched into space through ELaNa rideshare opportunities.