hubble jr. conceptual design review holly zaepfel, rachel small, kyle norman, ryan del gizzi, chris...
Post on 21-Dec-2015
216 views
TRANSCRIPT
Hubble Jr.Conceptual Design Review
Holly Zaepfel, Rachel Small, Kyle Norman, Ryan Del Gizzi, Chris Everhart, Evan Levy
September 21, 2006
Mission Statement and GoalsPrimary Mission: • The primary mission of Team Hubble Jr. is to collect data on
the amount of sunlight present in various stages of the atmosphere by use of a photometer, thereby demonstrating that the amount of sunlight present varies with altitude. We also hope to recover data pertaining to temperature and humidity from our HOBO data logger as to see the relationship between these factors and the levels of the atmosphere.
Secondary Mission: • To successfully integrate a small field telescope with a video
camera and create a device that will cause the telescope to constantly zoom in and out, therefore providing our team with video footage from which we can obtain close-up, clear pictures. This experiment will also allow our team to discover the functionality of a monocular lens as a telescope in near space.
Team Hubble Jr.
Holly & Rachel
Ryan & Kyle
Chris
Budget Scheduling
Evan
Testing specifics
Launch program, FFR
Injury prevention,
safety
Launch day sequence
Hardware
Design and assembly
detail
Special features of
design
Illustration of design
Block diagram
Organization and
management
PowerPoint and
document integration
Building and Testing
Task Chart
Design OverviewModular Based• Digital Camera
– Responsible for Taking Still Photos• Telescope (Digital Video Recorder +
Monocular)• Digital video recorder
– can manipulate the monocular zoom adjustment in flight, ensuring at least some clear frames in the video
– using a video editor we can print these single clear frames off as magnified still photos.
• HOBO Data Acquisition – The HOBO will record humidity and
internal/external temperature. This data will serve to produce a simple model of the atmosphere.
• Photometer – The photometer will record changes in
the brightness of the atmosphere. Coupled with the HOBO data, a simple model of the atmosphere can be created.
• Constructed from foam core– Cube shape with hot glue and
aluminum tape fastening the cube together.
• Insulation – The insulation will not only keep the
“guts” of the satellite warm, but will help pad sensitive equipment inside the satellite during balloon burst and landing.
• Mounting of components – The cameras (one with the monocular)
will be mounted to the interior walls of the satellite. A hole cut in the wall(s) so all of the necessary sensing components can “see” outside. The electronics will be mounted on pieces of foamboard running perpendicular to the floor and ceiling of the satellite. The batteries will be mounted as close to the flight string as possible while evenly distributing the weight throughout the satellite.
• Flight String – The flight string will run through a piece
of PVC tubing through the center of the satellite.
Hubble
Hubble
Jr.
Approximate weight: 700g
Hardware• Structure System (Provided By
Space Grant): – Foam-Core material– Aluminum tape
• Telescope System: – Meade Instruments 7X18 Travel
Monocular– VCamNow camcorder– (2) AA batteries or integration with
other power systems– 2Gb SD Memory Card for on-
board video capture– USB cable for video recovery
upon landing• Still Camera System Primary
(provided by Space Grant)– Sony ELPH Still Camera
• Still Camera System Secondary (tentative):
– Suprema mini digital camera – 8 Mb of on-board storage – USB cable included – 3 Volt CR2 Lithium Battery
• Weather Measurement/Monitoring System (Provided By Space Grant):
– HOBO H08-004-02 Data Logger – (2) Temperature sensor leads (one
external, one internal)• Photometer System:
– TSL230 Photometer– Microchip PIC18F2620 Microcontroller
System– 3 Volt Power Supply (Battery Pack)
• Thermal Protection System (Provided By Space Grant):
– Heater Circuit – (3) 9 Volt Batteries
• Power System/Electronic Connections:– Batteries – Switches– Miscellaneous Wiring and Solder
• Flight Computer/Experiment Control System:
– Velleman MK111 555 Timer based control circuit
– HOBO H08-004-02 Data Logger w/ Temperature Sensors
– Microchip PIC18F2620 Microcontroller
Special FeaturesStill Cameras• Canon Elph
– Provided for us– Operated by timing circuit
• Suprema Mini Digital Camera (tentative)– Capture images of ascent flight,
balloon burst, whip phenomena, decent
– Important that power doesn’t fail, otherwise pictures are lost
– Programmable timer in Microchip PIC18F2620 will have camera take pictures at intervals of 45 seconds, providing sufficient data and keeping the camera from timing out and turning itself off.
– Resolution• 320X240 (compressed VGA) will
allow for 208 pictures• Allows for possible continuous
image capturing from takeoff to landing
• Functionality will need to be tested under simulated flight conditions
Telescope System• Telescope
– Light weight field monocular• 7x zoom capability• Field view of 288 feet at 1,000
yard• Children’s mini camcorder
– 2 GB onboard SD memory card• Continuous recording for as long
as the camcorder’s battery will allow
Photometer• Components
– Microchip PIC18F2620 Microcontroller– TSL230 Photometer
• Purpose– Measure the level of light scattered by
air molecules and upper atmospheric dust particles
– Data recorded onto on – board flight computer (microcontroller)
• Reason for choosing a photometer– Versatile– Low cost– Stable operation in varying
temperatures
Functional Block Diagram
Other Important Information
• We will develop and test an interface between the two components as well as the appropriate software coding to operate this as an integrated unit.
• Since most of our equipment operates on 3 volts, we may develop a master battery pack of 1.5 Volt AA batteries ganged together in sequence to provide that voltage to all items that need it.
• We have located specific models and manufacturers for the hardware specified in our proposal. However, we reserve the right to alter this information as needed.
• Some components may need to be adjusted during the testing phase.
Budget
Budget Plan
• Manager: Holly Zaepfel • Strategies to stick to budget plan, not go over
allotted budget– Holly will be only person to make purchases– In charge of keeping the budget, detailed records of
purchases– No purchases without full consent of each team
member– Unless items are under $5, more than 3 items will not
be purchased in the same day so as not to exhaust funds too quickly or before being sure of the functionality of purchased items
ScheduleSeptember• 21st: CoDR presentation due• 22nd: Team meeting, 11:30am• 28th: DD Rev A assigned• 29th: Team meeting, 11:30am, begin
prototype constructionOctober• 5th: DD Rev A due• 6th: Team meeting, 11:30am, begin
purchasing and ordering hardware• 13th: Team meeting, 11:30am • 17th: Begin construction of
BalloonSat, CDR presentation due, DD Rev B due
• 20th: Team meeting, 11:30am, work on construction
• 22nd: Team meeting, work on construction
• 25th: Subsystems test• 27th: Team meeting, 11:30am, Drop
and Whip Tests• 30th: Cooler Test
November• 1st: Stair Test• 3rd: Team meeting, 11:30am, test
final design• 9th: LRR Cards due, DD Rev C due• 10th: Team meeting, 11:30am• 11th: LAUNCH DAY!!!• 17th: Team meeting, 11:30am• 24th: Team meeting, 11:30am• 26th: Team meeting• 30th: DD Rev D dueDecember• 4th: Final team meeting• 5th: Final presentation due
TestingWe will complete six tests that will challenge our satellite. 1. The drop test- withstand flight and landing turbulence2. The stair test- withstand flight and landing turbulence3. The cooler test – to determine whether or not the
satellite can with stand those particular conditions.4. The subsystems test – to determine whether our
telescope, digital camera, HOBO and photometer are working. The test consists of making sure each subsystem works while walking around the campus and subsequently viewing the data.
5. The whip test - after the test we will examine the structural integrity and check systems to see if they’re operational.
6. The mission simulation test - during this test we will run a simulation program that ‘simulates’ a flight for the systems.
Safety
• safety is our first priority • use proper safety equipment • use safety goggles and/or gloves if needed • wear appropriate clothing on launch day• first aid kit will be on hand• three goals
– use Common Sense– if unsure, ask– no team member is to do a task that may endanger
the team
Launch Program & ChecklistFlight Readiness Review (FRR). • During the FRR we will have a
mission briefing where we will discuss our mission goals.
• Secondly, we will create a flight plan.
Launch Site-Winsor, CO• Schedule
– 7:00 AM Arrival at Launch Site– 7:30 AM Final Check of Module– 8:00 AM Attach Module to Flight
String– 8:30 AM Breakfast– 9:00 AM Lift-Off of BalloonSats– 9:30 AM Begin tracking and
Recovery of BalloonSats– 2:00 PM Leave for Boulder
• Recovery Procedures-After launch, our team will track the balloon from launch to touchdown.
Launch Day Checklist-Pre-Flight Checklist-Latitude-Longitude-Elevation-Launch Time-Launch Site Conditions-Verify String is secure on the line-Connect module to the rest of the
balloon-Check final systems run clear-Boot up main power and subsystems-Open camera lens-Main Power Switch-Begin raising balloon-Raise balloon until module is in the
air-Record Launch time-Recovery