Instrument Data

Supplemental Information

To add information, please contact Bruce Fritz

52.002 Lessard GPS Data

Data files:
Data in Excel format
Data in CSV format

From Brian Banks

Data files:
Data in Excel format
Data in CSV format

Steve has combined Andøya data with the Svalbard data to provide GPS data for the sub-payload through the end of the flight. Provided are both an Excel and CSV (same contents) file with all of the sub-payload COUGAR GPS data. Combining the Andøya and Svalbard data has extended the final LOS data point from T+688 sec @ 139.7 km altitude (07:45:28 UT) to T+729 sec @ 41.2 km altitude (07:46:09 UT), an increase of 41 seconds of data.

Please contact Steve Powell directly for any questions about the data.

52.002 Lessard Attitude Solution

Document:
PDF Format

This is the final report for postflight attitude determination provided by the Flight Performance division of NSROC II. Prepared by Christopher Smith, reviewed by Mike Disbrow.

Data files:
Data in .csv format

T0: 12\13\2015 7:34:0.7 GMT

Launcher Settings: Lat = 69.2942 Deg., Lon. = 16.0193 Deg.
Alt: 171.3 Ft, El: 80.28 Deg., Az: 12.08 Deg., Bank: 0 Deg.

Attitude Output: time (sec from T0), roll (Euler angle in deg.), yaw, pitch, Roll rate, Euler angle matrix elements, local geodetic coordinates and velocity of the payload, lat (geo), long (Geo), Altitude(meters)

Position Source: GPS

Attitude Source: GLNMAC

See the README file for further detail on the file contents

Data files:
Data in .csv format

T0: 12\13\2015 7:34:0.7 GMT

Launcher Settings: Lat = 69.2942 Deg., Lon. = 16.0193 Deg.
Alt: 171.3 Ft, El: 80.28 Deg., Az: 12.08 Deg., Bank: 0 Deg.

Attitude Output: time (sec from T0), roll (Euler angle in deg.), yaw, pitch, Roll rate, Euler angle matrix elements, local geodetic coordinates and velocity of the payload, lat (geo), long (Geo), Altitude(meters)

Position Source: GPS

Attitude Source: GLNMAC

See the README file for further detail on the file contents

52.002 Lessard Payload Orientation

Files:
Payload Drawings
Sensor Map

There are two files provided.

"Payload Drawings" is provided by Shane Thompson (NSROC). It includes the flight configuration of the RENU 2 payload and invludes information about relative location of instruments on board the payload. A couple examples are shown above.

"Sensor Map" is provided by Brian Banks (NSROC). This is a spreadsheet compiled of all the relative locations of the payload sensors on RENU 2 (e.g. TM Mag, Thermistors, Accelerometers, etc.)

Exo Coning & Imbalance

ACS did a great job keeping the cone size small, only 1.2 deg half angle (and 0.13 deg/sec lateral rate). Dynamic imbalance is computed from the gyro rate data and it seems to me to be 22 times larger than measured (19,400 oz-in^2 compared to measured 901 oz-in^2). [Mike is] getting a direction of 32.7 deg for this imbalance (principal axis is tilted towards ME angle 32.7 deg viewed above the CG). This is confirmed by putting the imbalance into GEM simulation and it matches very well (click image to open PDF, page 2 of the attached). Waiting for confirmation of imbalance from ACS.

The last two pages show the average upward spin-axis direction compared to the average upward B-field direction, in both a local geodetic frame and an inertial frame.

Mike has created an animated movie file of these plots.

Pitch Angle Plot (Billingsley Mag)

Data file contains two arrays.

SM_ARRAY contains the data in degrees.
SM_TIME contains the time in increments of 10 ms. File starts at T0+207 seconds (after mag boom deploy).

This is the main payload spin axis pitch angle based on Billingsley magnetometer data. This calculation just uses a coarse magnetometer calibration but it should be accurate to within about a degree. It seems to agree well with the ACS data from Mike Disbrow.

Coning is about 2 degrees full angle. Best alignment is at 524 sec. Zero degrees is best alignment.

To add information, please contact Bruce Fritz

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