A5018383746- Ionosphere and magnetosphere dynamics
- Astro and Planetary Science
- Solar and Space Plasma Dynamics
- Spacecraft Design and Technology
- Planetary Science and Exploration
- Earthquake Detection and Analysis
- Atmospheric Ozone and Climate
- Plasma Diagnostics and Applications
- Geomagnetism and Paleomagnetism Studies
- Space Satellite Systems and Control
- Magnetic Field Sensors Techniques
- Space Science and Extraterrestrial Life
- GNSS positioning and interference
- Calibration and Measurement Techniques
- Fluid Dynamics and Turbulent Flows
- Meteorological Phenomena and Simulations
- Scientific Research and Discoveries
- Electromagnetic Launch and Propulsion Technology
- Dust and Plasma Wave Phenomena
- Gas Dynamics and Kinetic Theory
- Spacecraft and Cryogenic Technologies
- Rocket and propulsion systems research
- Mass Spectrometry Techniques and Applications
- Space exploration and regulation
- Space Exploration and Technology
Embry–Riddle Aeronautical University
2013-2024
Utah State University
2006-2007
Funded by the NSF CubeSat and NASA ELaNa programs, Dynamic Ionosphere Experiment (DICE) mission consists of two 1.5U CubeSats which were launched into an eccentric low Earth orbit on October 28, 2011. Each identical spacecraft carries Langmuir probes to measure ionospheric in-situ plasma densities, electric field DC AC fields, a science grade magnetometer magnetic fields. Given tight integration these multiple sensors with platforms, each DICE is effectively "sensor-sat" capable...
We present data from the Floating Potential Measurement Unit (FPMU) that is deployed on starboard truss of International Space Station. The FPMU a suite instruments capable redundant measurements various plasma parameters. instrument consists floating potential probe, wide-sweeping spherical Langmuir narrow-sweeping cylindrical and impedance probe. This paper gives brief overview instrumentation received quality, then presents algorithm used to reduce I-V curves Several hours are presented...
Abstract. Sounding rocket experiments were conducted during the NASA EQUIS II campaign on Kwajalein Atoll designed to elucidate electrodynamics and layer structure of postsunset equatorial F region ionosphere prior onset spread (ESF). Experiments took place 7 15 August 2004, each comprised launch an instrumented two chemical release sounding rockets. The rockets measured plasma number density, vector electric fields, other parameters apogee about 450 km. deployed trails trimethyl aluminum...
The floating potential measurement unit (FPMU) is a multiprobe package designed to measure the of International Space Station (ISS) as well density and temperature local ionospheric plasma environment. purpose FPMU provide direct measurements ISS spacecraft charging continuing construction leads dramatic changes in size configuration. data are used for refinement validation models evaluate severity frequency occurrence hazards. also effectiveness proposed hazard controls. consists four...
An instrumented sounding rocket launched from Wallops Island Virginia has flown through a midlatitude spread F (MSF) event in conjunction with simultaneous ionosonde, HF radar, and 244 MHz scintillation observations the ground. The situ measurements include electric field, horizontal neutral wind, plasma density within region. ground‐based radar of wave signatures bottomside region ledge reveal presence waves propagating to north northwest prior during spreading event. periods these range 16...
Investigation of Earth's mesosphere using sounding rockets equipped with a myriad instruments has been highly active field in the last 2 decades. This paper presents data from three separate instruments: an RF impedance probe, DC fixed bias Langmuir and electric that were flown on mesospheric rocket flight investigating presence charged dust within and/or around sporadic metal layer. The combined set indicates case payload surface charging, causes which are investigated this paper. A generic...
Abstract. Three sounding rockets were launched from Andøya Rocket Range in the ECOMA campaign December 2010. The aim was to study evolution of meteoric smoke particles during a major meteor shower. Of various instruments onboard rocket payload, this paper presents data multi-Needle Langmuir Probe (m-NLP) and charged dust detector. payload floating potential, as observed using m-NLP instrument, shows charging events on two three flights. These cannot be explained simple model, have...
The results of a measurement campaign to characterize the free stream atmospheric turbulence intensity and particulate concentrations experienced by BOLT II flight experiment are described. These measurements were obtained using custom high-altitude balloon-borne payloads modified commercial optical particle counter high-bandwidth coldwire thermometer hotwire anemometer, designed for low cost light weight, with telemetered data so that physical payload recovery is not necessary. Sixteen...
Abstract. In summer 2013 the WADIS-1 sounding rocket campaign was conducted at Andøya Space Center (ACS) in northern Norway (69° N, 16° E). Among other things, it addressed question of variability mesosphere/lower thermosphere (MLT) turbulence, both time and space. A unique feature WADIS project multi-point turbulence applying different measurement techniques including rocket-borne ionization gauges, VHF MAARSY radar, EISCAT radar near Tromsø. This allowed for horizontal to be observed field...
Abstract. In this paper we present an overview of measurements conducted during the WADIS-2 rocket campaign. We investigate effect small-scale processes like gravity waves and turbulence on distribution atomic oxygen other species in mesosphere–lower thermosphere (MLT) region. Our analysis suggests that density fluctuations are coupled to constituents, i.e., plasma neutrals. show all measured quantities, including winds, densities, temperatures, reveal signatures both turbulence....
Abstract The Martian climate system has been revealed to rival the complexity of Earth’s. Over last 20 yr, a fragmented and incomplete picture emerged its structure variability; we remain largely ignorant many physical processes driving matter energy flow between within Mars’ diverse domains. Mars Orbiters for Surface, Atmosphere, Ionosphere Connections (MOSAIC) is constellation ten platforms focused on understanding these connections, with orbits instruments tailored observe from three...
Swept Impedance Probe measurements in a sporadic E layer observed during the Sudden Atomic Layer (SAL) sounding rocket mission are analyzed to obtain absolute electron densities and neutral collision frequencies accurately. Three sets of upleg downleg impedance data selected for analysis. Initial estimates plasma parameters obtained through least mean square fit measured against analytical formula Z B ( f ) Balmain (1969). These initial used as starting point drive finite difference...
Abstract Measurements of turbulence and waves were made as part the Mesosphere‐Lower Thermosphere Turbulence Experiment (MTeX) on night 25–26 January 2015 at Poker Flat Research Range, Chatanika, Alaska (65°N, 147°W). Rocket‐borne ionization gauge measurements revealed in 70‐ to 88‐km altitude region with energy dissipation rates between 0.1 24 mW/kg an average value 2.6 mW/kg. The eddy diffusion coefficient varied 0.3 134 m 2 /s 10 /s. was detected around mesospheric inversion layers (MILs)...
Spinning or tumbling CubeSats with Langmuir probes deployed on booms will render spin-modulated plasma densities as the move in and out of spacecraft wake. It is traditionally assumed that lower-density measurements from spin cycle are made wake, higher-density outside Although this assumption valid for larger Earth’s ionosphere, paper scrutinizes its validity similar conditions. Spacecraft–plasma interactions (surface charging, sheaths, wakes) less understood CubeSats, small CubeSat...
We present data from nighttime sounding rocket flights in the low latitude E region. The payloads carried a sweeping Langmuir probe, plasma impedance and electric field probes. A detailed examination of density, temperature, measurements show two strong sporadic ( s ) layers with very high electron temperatures (∼1000 K) on each side upper layer. lower layer was consistent presence zonal neutral wind shear. strongly influenced by negative vertical field, winds their shears also contributing....
Langmuir probes are standard instruments for plasma density measurements on many sounding rockets. These can be operated in swept-bias as well fixed-bias modes. In probes, contamination effects frequently visible a hysteresis between consecutive up and down voltage ramps. This hysteresis, if not corrected, leads to poorly determined densities temperatures. With properly chosen sweep function, the parameters from correct then determined. this paper, we study where no type effect is seen data....
Multi-needle Langmuir probe is a fairly new instrument technique that has been flown on several recent sounding rockets and slated to fly subset of QB50 CubeSat constellation. This paper takes fundamental look into the data analysis procedures used for this derive absolute electron density. Our calculations suggest while remains promising, current could easily result in errors 50% or more. We present simple adjustment can reduce by at least factor five typical operation.
Sunlight reflected off of resident space objects can be used as an optical signal for astrometric orbit determination and deducing geometric information about the object. With increasing population small satellites debris in low Earth orbit, photometry is a powerful tool operational support missions, whether anomaly resolution or object identification. To accurately determine size, shape, spin rate, status deployables, attitude unresolved object, multi-hertz sample rate required to capture...
Abstract. In this paper we present an overview of measurements conducted during the WADIS-2 rocket campaign. We investigate effect small-scale processes like gravity waves and turbulence on distribution atomic oxygen other species in MLT region. Our analysis suggests that density fluctuations are coupled to constituents, i.e., plasma neutrals. show all measured quantities, including winds, densities, temperatures, reveal signatures both turbulence. observations wave saturation breakdown...