Equatorial Vortex Experiment

Last updated
The Terrier Malemute launch vehicle Terrier improved-Malemute 2.jpg
The Terrier Malemute launch vehicle

The Equatorial Vortex Experiment (EVEX) is a NASA-funded sounding rocket mission to better understand and predict the electrical storms in Earth's upper atmosphere. As part of this experiment, two rockets were launched for a twelve-minute journey through the equatorial ionosphere above the South Pacific. These rockets were launched from Kwajalein Atoll in the Marshall Islands during a period of April 27 to May 10, 2013.

The principal investigator for this mission is Erhan Kudeki of the University of Illinois. [1] The purpose of this experiment is to study what disrupts radio waves.

A NASA Terrier Oriole sounding rocket was launched at 3:39 a.m. EDT on 7 May 2013 from Roi Namur, Republic of the Marshall Islands. Ninety seconds later a Terrier-Improved Malemute sounding rocket was also launched successfully.

This experiment will help scientists better understand and predict the electrical storms in Earth's upper atmosphere. The electrical storms can interfere with satellite communication and global positioning signals. Payload for each rocket included two canisters of samarium and a dual frequency RF Beacon (NRL CERTO). [2]

These two rockets released vapor clouds of lithium (trimethyl aluminum),and were observed from various locations in the area. All scientific instruments on the rockets worked as planned. These two rockets were the second and third rockets of four planned for launch during 2013's campaign in the Marshall Islands. [3]

In June 2017, a Terrier-Improved Malemute two-stage sounding rocket was launched from NASA's Wallops Flight Facility in Virginia. The artificial clouds released by this rocket helped scientists track the movement of Earth's ionosphere. [4]

Related Research Articles

<span class="mw-page-title-main">Ionosphere</span> Ionized part of Earths upper atmosphere

The ionosphere is the ionized part of the upper atmosphere of Earth, from about 48 km (30 mi) to 965 km (600 mi) above sea level, a region that includes the thermosphere and parts of the mesosphere and exosphere. The ionosphere is ionized by solar radiation. It plays an important role in atmospheric electricity and forms the inner edge of the magnetosphere. It has practical importance because, among other functions, it influences radio propagation to distant places on Earth. It also affects GPS signals that travel through this layer.

<span class="mw-page-title-main">Laboratory for Atmospheric and Space Physics</span> Research organization at the University of Colorado Boulder

The Laboratory for Atmospheric and Space Physics (LASP) is a research organization at the University of Colorado Boulder. LASP is a research institute with over one hundred research scientists ranging in fields from solar influences, to Earth's and other planetary atmospherics processes, space weather, space plasma and dusty plasma physics. LASP has advanced technical capabilities specializing in designing, building, and operating spacecraft and spacecraft instruments.

The Earth Observing System (EOS) is a program of NASA comprising a series of artificial satellite missions and scientific instruments in Earth orbit designed for long-term global observations of the land surface, biosphere, atmosphere, and oceans. Since the early 1970s, NASA has been developing its Earth Observing System, launching a series of Landsat satellites in the decade. Some of the first included passive microwave imaging in 1972 through the Nimbus 5 satellite. Following the launch of various satellite missions, the conception of the program began in the late 1980s and expanded rapidly through the 1990s. Since the inception of the program, it has continued to develop, including; land, sea, radiation and atmosphere. Collected in a system known as EOSDIS, NASA uses this data in order to study the progression and changes in the biosphere of Earth. The main focus of this data collection surrounds climatic science. The program is the centrepiece of NASA's Earth Science Enterprise.

<span class="mw-page-title-main">Index of meteorology articles</span>

This is a list of meteorology topics. The terms relate to meteorology, the interdisciplinary scientific study of the atmosphere that focuses on weather processes and forecasting.

<i>Polar</i> (satellite) NASA science spacecraft which studied the polar magnetosphere until 2008

The Global Geospace Science (GGS) Polar satellite was a NASA science spacecraft designed to study the polar magnetosphere and aurorae. It was launched into orbit in February 1996, and continued operations until the program was terminated in April 2008. The spacecraft remains in orbit, though it is now inactive. Polar is the sister ship to GGS Wind.

<span class="mw-page-title-main">Van Allen Probes</span> NASA Earth magnetosphere investigator satellites

The Van Allen Probes, formerly known as the Radiation Belt Storm Probes (RBSP), were two robotic spacecraft that were used to study the Van Allen radiation belts that surround Earth. NASA conducted the Van Allen Probes mission as part of the Living With a Star program. Understanding the radiation belt environment and its variability has practical applications in the areas of spacecraft operations, spacecraft system design, mission planning and astronaut safety. The probes were launched on 30 August 2012 and operated for seven years. Both spacecraft were deactivated in 2019 when they ran out of fuel. They are expected to deorbit during the 2030s.

<span class="mw-page-title-main">ARGOS (satellite)</span>

The Advanced Research and Global Observation Satellite (ARGOS) was launched on 23 February 1999 carrying nine payloads for research and development missions by nine separate researchers. The mission terminated on 31 July 2003.

<span class="mw-page-title-main">MAVEN</span> NASA Mars orbiter

MAVEN is a NASA spacecraft orbiting Mars to study the loss of that planet's atmospheric gases to space, providing insight into the history of the planet's climate and water. The name is an acronym for "Mars Atmosphere and Volatile Evolution" while the word maven also denotes "a person who has special knowledge or experience; an expert". MAVEN was launched on an Atlas V rocket from Cape Canaveral Air Force Station, Florida, on 18 November 2013 UTC and went into orbit around Mars on 22 September 2014 UTC. The mission is the first by NASA to study the Mars atmosphere. The probe is analyzing the planet's upper atmosphere and ionosphere to examine how and at what rate the solar wind is stripping away volatile compounds.

The Charged Aerosol Release Experiment also known as CARE, is a project run by NASA which will use a rocket to release dust in the upper atmosphere to form a dusty plasma in space. The clouds thus generated are intended to simulate naturally occurring phenomena called noctilucent clouds, which are the highest clouds in the atmosphere. The CARE experiment is intended to create an artificial dust layer at the boundary of space in a controlled sense, in order to "allow scientists to study different aspects of it, the turbulence generated on the inside, the distribution of dust particles and such."

<span class="mw-page-title-main">Space research</span> Scientific studies carried out using scientific equipment in outer space

Space research is scientific study carried out in outer space, and by studying outer space. From the use of space technology to the observable universe, space research is a wide research field. Earth science, materials science, biology, medicine, and physics all apply to the space research environment. The term includes scientific payloads at any altitude from deep space to low Earth orbit, extended to include sounding rocket research in the upper atmosphere, and high-altitude balloons.

<span class="mw-page-title-main">Radio Aurora Explorer</span>

Radio Aurora Explorer (RAX) is the first National Science Foundation sponsored CubeSat mission. The RAX mission is a joint effort between SRI International in Menlo Park, California and the University of Michigan in Ann Arbor, Michigan. The chief scientist at SRI International, Dr. Hasan Bahcivan, led his team at SRI to develop the payload while the chief engineer, Dr. James Cutler, led a team of students to develop the satellite bus in the Michigan Exploration Laboratory. There are currently two satellites in the RAX mission.

<span class="mw-page-title-main">FASTSAT</span>

Fast, Affordable, Science and Technology Satellite-Huntsville 01 or FASTSAT-Huntsville 01 of the NASA. FASTSAT-HSV 01 was flying on the STP-S26 mission - a joint activity between NASA and the U.S. Department of Defense Space Test Program, or DoD STP. FASTSAT and all of its six experiments flying on the STP-S26 multi-spacecraft/payload mission have been approved by the Department of Defense Space and Experiments Review Board (USA-220).

<span class="mw-page-title-main">Ionospheric Connection Explorer</span> NASA satellite of the Explorer program

Ionospheric Connection Explorer (ICON) is a satellite designed to investigate changes in the ionosphere of Earth, the dynamic region high in our atmosphere where terrestrial weather from below meets space weather from above. ICON studies the interaction between Earth's weather systems and space weather driven by the Sun, and how this interaction drives turbulence in the upper atmosphere. It is hoped that a better understanding of this dynamic will mitigate its effects on communications, GPS signals, and technology in general. It is part of NASA's Explorer program and is operated by University of California, Berkeley's Space Sciences Laboratory.

<span class="mw-page-title-main">RAX-2</span>

RAX-2 is a CubeSat satellite built as a collaboration between SRI International and students at the University of Michigan College of Engineering. It is the second spacecraft in the RAX mission. The RAX-1 mission ended after approximately two months of operation due to a gradual degradation of the solar panels that ultimately resulted in a loss of power. RAX team members applied the lessons learned from RAX-1 to the design of a second flight unit, RAX-2, which performs the same mission concept of RAX-1 with improved bus performance and additional operational modes. Science measurements are enhanced through interactive experiments with high power ionospheric heaters where FAI will be generated on demand.

<span class="mw-page-title-main">Terrier Malemute</span>

The Terrier Malemute is a two-stage American sounding rocket typically used for smaller payloads. Both the Terrier first stage and the Malemute second stage use solid fuel. The Terrier burns for approximately 5.2 seconds, and the Malemute burns for approximately 21.5 seconds. The first stage booster consists of a surplus Navy Terrier MK 12 Mod 1 rocket motor with four 0.22 m2 (340 sq in) fin panels arranged in a cruciform configuration. The Terrier rocket booster has a diameter of 460 mm (18 in). The second stage solid rocket is a Thiokol Malemute TU-758 rocket motor, specially designed for high altitude research rocket applications. Apogee is approximately 400 km (220 nmi) for a 230 kg (510 lb) payload or 700 km (380 nmi) for a 41 kg (90 lb) payload. For a payload weight of 200 lb (91 kg), the acceleration during the boost phase is 26 g. Its first flight was on November 11, 1974, from Barking Sands. Other launch sites have included Poker Flat, Wallops Island and Fort Yukon, Alaska.

<span class="mw-page-title-main">Anomalous Transport Rocket Experiment</span>

The Anomalous Transport Rocket Experiment (ATREX) is a heliophysics experiment that was conducted by NASA's Goddard Space Flight Center out of the Wallops Flight Facility located on the Eastern Shore of Virginia. The mission entailed the use of 5 sounding rockets launched closely in time together, each of which released a chemical tracer into the high-altitude jet stream.

<span class="mw-page-title-main">Global-scale Observations of the Limb and Disk</span>

Global-scale Observations of the Limb and Disk (GOLD) is a heliophysics Mission of Opportunity (MOU) for NASA's Explorers program. Led by Richard Eastes at the Laboratory for Atmospheric and Space Physics, which is located at the University of Colorado Boulder, GOLD's mission is to image the boundary between Earth and space in order to answer questions about the effects of solar and atmospheric variability of Earth's space weather. GOLD was one of 11 proposals selected, of the 42 submitted, for further study in September 2011. On 12 April 2013, NASA announced that GOLD, along with the Ionospheric Connection Explorer (ICON), had been selected for flight in 2017. GOLD, along with its commercial host satellite SES-14, launched on 25 January 2018.

Waves and Instabilities from a Neutral Dynamo or WINDY is space experiment mission for the purpose to study a phenomenon that occurs in the ionosphere – a layer of charged particles in the upper atmosphere.

<span class="mw-page-title-main">NASA Sounding Rocket Program</span> Aerospace measurement program of NASA

The NASA Sounding Rocket Program (NSRP) is a NASA run program of sounding rockets which has been operating since 1959. The missions carried out by this program are primarily used for scientific research, particularly low gravity and material based research. NASA's sounding rocket program is commonly used by colleges and universities for upper atmosphere research.

<span class="mw-page-title-main">FR-1 (satellite)</span> French scientific satellite; the second French satellite

FR-1 was the second French satellite. Planned as the first French satellite, it was launched on 6 December 1965—ten days after the actual first French satellite, Astérix—by an American Scout X-4 rocket from the Western Range at Vandenberg Air Force Base. The scientific satellite studied the composition and structure of the ionosphere, plasmasphere, and magnetosphere by measuring the propagation of very low frequency (VLF) waves and the electron density of plasma in those portions of the Earth's atmosphere. FR-1's VLF receiver operated until 26 August 1968. FR-1 remains in orbit as of 2023.

References

  1. "NASA Mission to Study What Disrupts Radio Waves". NASA . Archived from the original on 2023-05-30.
  2. Payloads used in experiment
  3. Launching of 2nd and 3rd rockets
  4. NASA Sounding Rocket Releases Colorful Morning Cloud Show - Retrieved from Space.com on 6 July 2017.