The solar array for the Pioneer deep space probe.
Solar array as primary electrical power source of Pioneer deep space probes, comparing performance data with test and design data
PIONEER SPACE PROBE↗
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Evidence, from Pioneer 10/11, Galileo, and Ulysses Data, for an Anomalous, Weak, Long-Range Acceleration
Radio metric data from the Pioneer 10/11, Galileo, and Ulysses Spacecraft indicate an apparent anomalous, constant, acceleration acting on the spacecraft with a magnitude ~8.5 x 10(sup -8) cm/s(sup 2), directed towards the Sun.
Pioneer 10/11 Galileo Ulysses kinematic tests radi↗
A route to understanding of the Pioneer anomaly
Here we discuss the Pioneer anomaly and present the next steps towards the understanding of its origin.
LATOR↗
Analysis of the Pioneer Venus Large Probe Neutral Mass Spectrometer Data Yields New Insights into the Composition of Venus’ Atmosphere
We present a new analysis of mass spectral data obtained by the Pioneer Venus (PV) Large Probe Neutral Mass Spectrometer (LNMS). To analyze the LNMS data, we constructed an analytical model that accounts for spectrometer performance at each altitude, provides CO2 abundances in units of density (kg/m3), and retains the resolving power of the LNMS through use of a targeted data-fitting routine. Our results provide new insights into the composition of Venus’ atmosphere and show that densities for CO2 increase towards the surface, which is suggestive of surface outgassing. Additionally, the data reveal partial obstructions of the LNMS inlet at <17 km, which is an likely important consideration for future missions. Re-analysis of the LNMS data may assist in revealing the past, present and/or future habitability of Venus’ clouds.
mass spectral data↗
Hydrodynamic characterization of the coastal pioneer array ocean observing system
Ocean observation buoys require relatively small amounts of power, yet traditionally necessitate costly resupply trips for battery replacement. With the offshore location of the buoys and small power requirements, wave energy may be an effective solution for providing consistent and reliable power to support the buoy instrumentation. The US National Science Foundation Ocean Observatories Initiative (OOI) includes arrays of point absorber-like buoy systems used for ocean observation that have been deployed at multiple locations including the Southern Mid-Atlantic Bight. A study is currently underway to design a pitch resonator wave energy converter to supplement existing renewable energy generation for powering observation instrumentation. This paper details field measurements from surface moorings of the OOI Coastal Pioneer Array, which informs the subsequent development of a numerical model for the moored observation system. The model is developed in Wave Energy Converter Simulator (WEC-Sim), which leverages the Simscape multibody solver within the MATLAB/Simulink framework and linear potential flow theory to simulate the hydrodynamic interactions and multibody dynamics in 6 degrees of freedom. Multiple tuning variables are considered to produce a model for the system that matches well with empirical data (about 8% error). In conclusion, the WEC-Sim model will serve as a platform for integrating the pitch resonator wave energy converter concept and deployment preparation (detailed design including power take-off and control systems, response evaluation, etc.).
hydrodynamic modeling↗
Preliminary results from the Pioneer 6 magnetic field experiment.
Interplanetary magnetic field measurements using flux gate magnetometer sensor mounted on Pioneer VI space probe, noting various graphs
MAGNETOMETER↗
Pioneer VI observations of the solar flare particle event of 7 July, 1966.
Time dependency, anisotropy degree and spectral composition of cosmic radiation generated during July 1966 solar flares as observed by Pioneer VI
SOLAR FLARE↗
Pioneer C launch
Prelaunch news release on Pioneer C spacecraft mission objectives and specifications
Source record↗
Interplanetary Electron Content Measured Between Earth and the Pioneer 6 and 7 Spacecraft Using Radio Propagation Effects
Electron number density, structure, and time variability of interplanetary media determined by radio propagation effects on Pioneer 6 and 7 spacecraft to earth communications
Koehler, R. L.↗
Feasibility study for conducting biological experiments aboard a Pioneer spacecraft
Engineering feasibility of biological experiments aboard Pioneer space probes
Lindberg, R. G.↗
Pioneer 6 orientation control system design survey. NASA/ERC design criteria program, guidance and control
Pioneer 6 space probe spin stabilized orientation control system design survey
Massey, W. A.↗
Solar weather monitoring - Pioneer project.
Solar environment changes effect on space weather monitoring, noting Pioneer 6 and 7 space probes
Frosolone, A.↗
Pioneer's solar-cell array.
Solar array as primary electrical power source of Pioneer deep space probes, comparing performance data with test and design data
Baron, W. R.↗
Plasma and magnetic field observations during the magnetosphere passage of Pioneer 7.
Data from simultaneous measurements of magnetic field and electron component of plasma in near geomagnetic tail during Pioneer 7 passage
Lazarus, A. J.↗
Radio propagation measurements of pulsed plasma streams from the sun using Pioneer spacecraft.
Interplanetary medium and pulsed solar plasma streams electron number density, structure and behavior determined with radio propagation measurements by Pioneer spacecraft
Koehler, R. L.↗
Improvement of astronomical constants and ephemerides from Pioneer radio tracking data.
Tabulated coherent S-band Doppler data from Pioneer 6 and 7 radio tracking, improving astronomical constants and ephemerides for earth- moon system
Anderson, J. D.↗
Pioneer 6 observations of a steady-state magnetosheath.
Pioneer 6 observations of steady state magnetosheath during transit of magnetopause under quiet solar wind-geomagnetic field interaction conditions
Mckibbin, D. D.↗
Comparison of theoretical predictions of the flow and magnetic fields exterior to the magnetosphere with the observations of Pioneer 6.
Pioneer 6 observations exterior to magnetosphere compared with theoretical predictions of solar wind flow characteristics and geomagnetic field interaction using continuum fluid model
Alksne, A. Y.↗