Spin-Axis Attitude Determination Using In-Flight Data

2010 ◽  
Vol 33 (3) ◽  
pp. 768-781 ◽  
Author(s):  
Jozef C. Van Der Ha
Keyword(s):  
Attitude Determination ◽  
Spin Axis ◽  
Flight Data

Correlation of HIFiRE-5b Flight Data With Computed Pressure and Heat Transfer for Attitude Determination

2017 ◽  
Author(s):  
Joseph S. Jewell ◽  
Roger L. Kimmel ◽  
Jonathan Poggie ◽  
Kevin Porter ◽  
Thomas J. Juliano
Keyword(s):  
Heat Transfer ◽  
Attitude Determination ◽  
Flight Data

HIFiRE-5b Flow Computations and Attitude Determination via Comparison with Flight Data

2018 ◽  
Vol 55 (6) ◽  
pp. 1356-1368 ◽  
Author(s):  
Joseph S. Jewell ◽  
Roger L. Kimmel ◽  
David W. Adamczak ◽  
Jonathan Poggie ◽  
Kevin M. Porter ◽  
...  
Keyword(s):  
Attitude Determination ◽  
Flight Data

Models of comets with strongly variable nongravitational effects

1999 ◽  
Vol 173 ◽  
pp. 381-387
Author(s):  
M. Królikowska ◽  
G. Sitarski ◽  
S. Szutowicz
Keyword(s):  
Cometary Nucleus ◽  
Spin Axis ◽  
Reactive Force ◽  
Orbital Elements ◽  
Cometary Nuclei ◽  
Short Period ◽  
Basic Parameters ◽  
Polar Radius ◽  
Cometary Activity ◽  
Nongravitational Effects

AbstractThe nongravitational motion of five “erratic” short-period comets is studied on the basis of published astrometric observations. We present the precession models which successfully link all the observed apparitions of the comets: 21P/Giacobini-Zinner, 31P/Schwassmann-Wachmann 2, 32P/Comas Solá, 37P/Forbes, and 43P/Wolf-Harrington. We used the Sekanina's forced precession model of the rotating cometary nucleus to include the nongravitational terms into equations of the comet's motion. Values of six basic parameters (four connected with the rotating comet nucleus and two describing the precession of spin-axis of the nucleus) have been determined along the orbital elements from positional observations of the comets. The solutions were derived with additional assumptions which introduce instantaneous changes of modulus of reactive force,Aand of maximum of cometary activity with respect to perihelion time. The present precession models impose some contraints on sizes and rotational periods of cometary nuclei. According to our solutions the nucleus of 21P/Giacobini-Zinner with oblateness along the spin-axis of about 0.32 (equatorial to polar radius of 1.46) is the most oblate among five investigated comets.

A Field Demonstration of the Air Traffic Control Tower Flight Data Manager Prototype

2011 ◽  
Author(s):  
Hayley J. Davison Reynolds ◽  
Maria Picardi Kuffner ◽  
Sarah K. Yenson
Keyword(s):  
Traffic Control ◽  
Air Traffic Control ◽  
Air Traffic ◽  
Flight Data ◽  
Data Manager
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