Transcript Slide 1

ARLISS Presentation
September 18, 2009
Bruno’s Country Club
Holo Mua, “Moving Forward”
Premo Ames II – Electronics & Project Manager
Joleen Iwaniec – Programmer
Todd Esposito – Airframe Development
Makana Ciotti – Airframe Construction
“Holo Mua”
Moving Forward
The Continuing Efforts at
Windward Community College
Sponsors

Hawaii Space Grant Consortium

AeroPac

Center for Aerospace Education
ARLISS






A
R ocket
L aunch for
I nternational
S tudent
S atellites

Simulated Satellite
recording data
simultaneously
navigating it self to a
predetermined
location on earth
autonomously.
SUAV
Small Unmanned Aerial Vehicle

Advantages vs. Ground Traverse Vehicle




Higher return velocity
Requires less power
Has a better chance against a headwind
Obstacles to be overcome




Autonomous flight control
Navigation in 3D vs. 2D
The intricacies of aerodynamics
HALO (High Altitude Low Opening)
Descent Phases

Rapid Descent Phase
Take initial heading
 Begin steering toward the target
 Release parasail at 1100 ft.


Parasail Descent Phase

Continue steering towards target via parasail
Descent Phases
2008 ARLISS Results

1st launch – Failure


Module failed to eject from carrier
2nd launch – Failure

Module failed to eject from carrier
Cause of Failure

Module built to previous carrier
specifications.
Carrier unable to seal properly
 HCX Flight computer confused at apogee
event sending carrier back into rocket

New Direction

New Air Frame Design
Built to current carrier specifications
 25% volume increase for electronics
 Parafoil chamber volume increase


Improved Electronics
Isolated electronic systems
 Easier programing

2009 Air Frame Design
2009 Air Frame
Proto Design Testing

Mock
Prototype
design used for
testing flight
characteristics.
Larger scale
model under
construction for
future testing
2009 Module
Electronic Systems

Navigation and Steering




Parallax Propeller Micro Controller
Parallax GPS Module
Parallax Servo Motor
Utilized Spin program
Electronic Systems

Data Collection Unit 1 (PB2)
Parallax BS2P Micro Controller
 Parallax DS1620 Temperature Sensor
 Parallax GPS Module
 Parallax EEPROM

Electronic Systems

G-Wiz HCX Flight Computer
Parasail Release
 Data Collection

 Acceleration
 Altitude
 Pressure
 Speed
GPS Navigation

Orientation relative to the target
determined via GPS signal
uses the angle of the craft’s position
relative to the target to determine
whether to turn or not
• greater than a certain degree – right turn
• Less than a certain degree – left turn
2009 ARLISS Results

1st launch – Successful Deployment


0.6 miles from target
2nd launch – Successful Deployment

2.0 miles from target
1st Launch Details

Low Risk Flight
High winds non-existent
 Module deployment with parasail deployed
upon exit from carrier
 GPS data from PB2 (passenger board – data
collection) corrupt. **possible cause – weak
GPS signal**
 Navigation appears to be working – module
found heading towards target, while rocket
parts found further away.

2nd Launch Details

Low Risk Flight
High winds non-existent
 Module deployment with parasail deployed
upon exit from carrier
 Moved GPS sensor for PB2 out of module for
increased GPS sensitivity
 Module parasail shroud lines found tangled –
module could not steer

2nd Launch Data
Event ID
Valid
Date
Time:UTC
Target
# Sats.
Latitude
Longitude
Celcius
Fahrenheit
Meters
Feet
40.840944 -119.143972
502
1 09/18/09
00:49:09
5 40 50.325
-119 6.7654
49.5
121.1
3995.4
13108.27
503
1 09/18/09
00:49:14
6 40 50.311
-119 6.7607
49.5
121.1
3977.1
13048.23
504
1 09/18/09
00:49:19
6 40 50.353
-119 6.7557
49.5
121.1
3942.4
12934.38
505
1 09/18/09
00:49:24
6 40 50.343
-119 6.7500
49.5
121.1
3906.8
12817.59
506
1 09/18/09
00:49:29
6 40 50.248
-119 6.7444
49.5
121.1
3855.9
12650.59
507
1 09/18/09
00:49:34
6 40 50.172
-119 6.7398
49.5
121.1
3778.4
12396.33
508
1 09/18/09
00:49:39
8 40 50.42
-119 6.7370
49.5
121.1
3700.2
12139.76
509
1 09/18/09
00:49:44
8 40 49.9952 -119 6.7323
49.5
121.1
3635.7
11928.15
510
1 09/18/09
00:49:49
8 40 49.9847 -119 6.7285
49.5
121.1
3574.1
11726.05
511
1 09/18/09
00:49:54
8 40 49.9725 -119 6.7215
49.5
121.1
3512.8
11524.93
512
1 09/18/09
00:49:59
8 40 49.9591 -119 6.7147
49.5
121.1
3450.4
11320.21
Acknowledgements



Dr. Luke Flynn, HSGC
Dr. Ed Scott, HSGC
Marcia Sistoso, HSGC

Dr. Joseph Ciotti, Professor, WCC Astronomy
Dr. Jacob Hudson, Professor, WCC Physics
Professor Robert Twiggs, Stanford University

Jim and Becky Green, AreoPac

