Transcript CoDR_CSU - Colorado Space Grant Consortium

RockSat 2008-2009
RamRack
Conceptual Design Review
Colorado State University
Zach Glueckert
Christopher Reed
Timothy Schneider
Brendan Sheridan
Christina Watanuki
Advisor: Dr. Azer Yalin
October 28, 2008
Overview
Objective: To develop a sounding rocket payload to act as a power bus, data
logger, and mounting structure for future scientific payloads
Overview:
•Power bus will be programmable to provide varying voltage supplies depending
on need
•Data logger will provide a broad range of low level sensor communication and
will contain several redundant systems
•Design will incorporate several permanent sensors that can be used to monitor
conditions of this and future flights
Success Criteria: On this initial flight sensor data will provide data on conditions
in the immediate region of the payload as well as to determine the ductility of the
frame under stresses
Benefits: This information will be used to create constraints on future
experimental payloads
Design
• Parts
– Mounting Frame
• Provides structural support for scientific payload
and power and control modules.
• Sufficient stiffness for a full can future payload.
– Battery Packs
– Electronics
• Redundant 16 channel A/D 16 bit conversion and
dual serial input with data logging capabilities.
• 4 GB storage available on MiniSD card.
• Real-time system monitoring and control.
Mounting Frame
Batteries
• Tenergy Li-Ion
– 7.4V
– 22000 mAh
– 3.2oz
– 2.63” x 1.45” x 0.7”
Electronics
• ATmega 2561
– Data logging
– General I/O
• Atmega 168
– System Control
– System Monitor
• uALFAT-TF
– SD card interface
• CD74HC4067
– 16-Channel Analog Multiplexer
RockSat 2008-2009
• RockSat Payload Canister User Guide Compliance
– Mass:
• Estimated use: 2.5lbs
• Allotted: 2.5lbs
– Volume:
• Estimated use: 9” x 2”
• Allotted: 9” x 2”
– Payload activation
• G-switch – no voltage running prior to launch. On launch, G-switch
activates latching relay to power electronic systems.
– Rocket Interface
• Complies with no-volt shorting wire setup.
Logistics
• We have contacted the other Colorado
schools to plan a meeting.
• Looking at the week of November 3rd
through the 7th.
Management
Team Leader
Zach Glueckert
Mechanical
Engineering
Chris
Reed
Systems
Engineer
Control
Systems
Zach
Glueckert
Electrical Engineer
Tim Schneider
Software Engineer
Brendan Sheridan
Christina
Watanuki
Budget
RamRack Budget
Item
Part Number
Retailer
Quantity
6061 Aluminum Plate
8975K14 McMaster-Carr
2
Tenergy Li-Ion Battery 18650
31003 All-Battery
2
Aluminum Electronics Encl
r3606PO-ND Digi-Key
1
Electronics (Estimate pending final decisions on hardware requirements):
Assorted Resistors, Capicators, Connectors, etc.
1
UALFAT-TF SVI
2
ATMEGA 2561
2
16 bit ADC
1
CD74HC4067
1
Power Control System
1
Sensor Package
1
Cost
Total Cost
$ 28.62 $
57.24
$ 18.99 $
37.98
$ 19.67 $
19.67
$
$
$
$
$
$
$
25.00
30.00
5.00
5.00
16.00
20.00
50.00
Total
$
$
$
$
$
$
$
25.00
60.00
10.00
5.00
16.00
20.00
50.00
$
300.89
Conclusions:
 Concerns
 Shared canister integration
 How to mount three different payloads together
 Center of mass/volume with other schools
 Mass and volume constraints
 Is there any data available on vibrations during two stage
rocket launch?
 Closing Remarks
 Well rounded team
 Have the mechanical, electrical and computer
backgrounds required to meet project goals
 This is a great way to set up CSU for future involvement in
RockSAT