1 Colorado Space Grant Consortium Gateway To Space ASEN / ASTR 2500 Class #08 Gateway To Space ASEN...

1Colorado Space Grant ConsortiumColorado Space Grant Consortium

Gateway To SpaceASEN / ASTR 2500

Class #08

Gateway To SpaceASEN / ASTR 2500

Class #08

2

- HW 04 DUE September 18, 2008 (one per team and bring all hardware to class)

- New version on line along with new version of supplemental slides needed for homework

- Presentations next week are at 5:00 PM

- Proposals and presentations are due at 5:00 PM

- Bring something to drink

- Each team will have 10 minutes to present with questions

- We will be done at 7:00 PM

Announcements::

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09-30-08 Now Rocket History10-07-08 Now Systems Engineering

10-28-08 Now Attitude Determination and Control10-30-08 Now Spider

12-09-08 Now The Future of Space

Syllabus Changes::

Colorado Space Grant ConsortiumColorado Space Grant Consortium

Timing Circuit

Class #08

Timing Circuit

Class #08

6

Step 12: Install 555 Timer chip. Be careful of orientationStep 12: Install 555 Timer chip. Be careful of orientation

Hands-on: Timing Circuit, Power & Camera

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Step 15b: Insert the red wire from the battery into the +12V terminal on the timing circuit (should be “+” of battery and not as shown below)



You should here a click and see red LED light up.

If not disconnect power immediately

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Hands-on: Heater Circuit

Step 31: Attach 3 flight batteries and turn switch on. Your heater will get extremely hot with in 1 to 2 minutes. If longer, please let me know.

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Step 13: Attach two wires to each side of the single A23 battery case (one red and one black) Make sure the red is attached to the + side. Install one A23 battery (12 V) into this battery holder

Step 14: Use voltmeter to verify you have 12 V (you do not need the switch for this test you will need to complete this test as shown before flight)

Step 13: Attach two wires to each side of the single A23 battery case (one red and one black) Make sure the red is attached to the + side. Install one A23 battery (12 V) into this battery holder

Step 14: Use voltmeter to verify you have 12 V (you do not need the switch for this test you will need to complete this test as shown before flight)


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Step 15: Insert the black wire from the battery pack into GND

(Should be “-” of battery).

Step 15: Insert the black wire from the battery pack into GND

(Should be “-” of battery).


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You should here a click and see red LED light up.

If not disconnect power immediately

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If you are using a switch, do step 16

Step 16: Flip switch ON (should here a click and see red LED light up)

NOTE: If not, flip switch OFF and have timing circuit inspected


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Step 17: Adjust the pause to get an interval of between 15 and 30 seconds. Make sure that the pulse is long enough that the camera will actually take a picture (somewhere around 1 second).

Step 17: Adjust the pause to get an interval of between 15 and 30 seconds. Make sure that the pulse is long enough that the camera will actually take a picture (somewhere around 1 second).

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This step does not need to be done as part of this assignment

Step 18: Tape the sides of the battery case and tape the batteries into place

This step does not need to be done as part of this assignment

Step 18: Tape the sides of the battery case and tape the batteries into place

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Step 33: Cover the back of the timing circuit with black electrical tape to prevent electrical shorts



Digital Camera

Class #08

Digital Camera

Class #08

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Step 17: Insert the test batteries into the camera.

Step 17: Insert the test batteries into the camera.

These are your flight batteriesThese are your flight batteries

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Step 18: Insert the 1 GB SD card into the camera and close the battery door.

Step 18: Insert the 1 GB SD card into the camera and close the battery door.


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Step 19: Test to make sure the camera works properly. Connect the camera switch to the connector of the front of the camera and flip the switch to ON. If camera does not turn on, raise your hand.

Next, touch the two black wires together. The camera should take a picture.

If this does not happen, raise your hand.

Step 19: Test to make sure the camera works properly. Connect the camera switch to the connector of the front of the camera and flip the switch to ON. If camera does not turn on, raise your hand.

Next, touch the two black wires together. The camera should take a picture.

If this does not happen, raise your hand.

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Resolution and Flash SettingsResolution and Flash Settings

Step 20: Once the camera is powered on, press the menu button and you will see this screen.

Step 20: Once the camera is powered on, press the menu button and you will see this screen.

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Step 21: Press left and you will be taken to the Capture Menu.

Step 21: Press left and you will be taken to the Capture Menu.

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Step 22: Press down until you get to the Image Quality setting and press OK. Here you will change the setting from Normal (6MP) to 6MP Best and press OK.

Step 22: Press down until you get to the Image Quality setting and press OK. Here you will change the setting from Normal (6MP) to 6MP Best and press OK.

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Step 23: Make sure the switch on the front of the camera is set to landscape.

Step 23: Make sure the switch on the front of the camera is set to landscape.

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Step 27: Connect the first shutter release wire to the NO connection.

Step 27: Connect the first shutter release wire to the NO connection.

NOTE: it doesn’t matter which wire this is as long as it is black


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Step 28: Insert the other shutter release wire into the COM terminal.

Step 28: Insert the other shutter release wire into the COM terminal.


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Step 28: Connect the red wire from the battery pack to the red wire on the switch and you are finished!Step 28: Connect the red wire from the battery pack to the red wire on the switch and you are finished!

Final setup should resemble the image to the left.

Final setup should resemble the image to the left.


Colorado Space Grant ConsortiumColorado Space Grant Consortium

HOBO Computer

Class #08

HOBO Computer

Class #08

33

- Set-up and test the HOBO (15 mins)

HOBO Demo:

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Step 1: Take out HOBO bag and set parts out

Hands-on: Temperature & Solar Experiments

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Step 2: Install S/W if you have a laptop


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Step 3: Install serial cable to laptop


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Step 4: Connect Temperature cable (TMC1-HA) to channel 4 on HOBO Computer


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Step 5: Connect Voltage cable (Cable-2.5 Stereo) to channel 3 on HOBO Computer


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Step 6: Solar Panel to Voltage CableMake sure black wire from solar cell goes to the black wire on the voltage cable.


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Step 7: Connect PC cable to HOBO Computer


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Step 7: Start HOBO Box Car 3.7 software


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Step 7: Start HOBO Box Car 3.7 software


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Step 8: Launch HOBO computer


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Step 9: Check Battery & select “Enable/Disable Channels”


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Step 10: Select Channel 4


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Step 11: Select correct temperature cable


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Step 12: Select Channel 3


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Step 13: Select correct voltage cable


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Step 14: Select Data sampling or interval


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Step 15: Confirm Settings and select Start


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Step 16: Unplug PC cable from HOBO


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Take and Retrieve Data


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Step 17: Give your HOBO sensor some data


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Step 18: Connect PC Cable to HOBO

Step 19: Select Readout


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Step 20: Verify data download


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Step 21: Disconnect PC cable from HOBO


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Step 22: Name Data


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Step 23: View Data


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Step 24: Change data channel


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Step 25: View Data from Channel 4


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Delay Start Feature


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To save time tomorrow and launch day…

- IMPORTANT: Make sure laptop time and date is correct for Colorado Mountain Daylight Time


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- Repeat Steps 1 through 13

- Step 26: Set sampling rate to 15 Sec

- This will give you over 8 hours of data


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- Step 27: Select Delay Start

- Step 28: Set the date and time to 07-15-06 at 7:00 AM

- Step 29: Select Start


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Step 30: Unplug PC cable from HOBO


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Step 31: Store HOBO and cables in box

This concludes the set and initialization for the Temperature and Solar Experiments



Foam Core

Class #08

Foam Core

Class #08

68

- BalloonSats are commonly made of foam core

- Foam core is a simple, low cost composite panel

- You will use hot glue and Xacto knives to create your box

- There is a OK way of building with foam core

- Cut individual pieces and glue them together

- This way works but is not the best and requires more “belts and suspenders”

Hands-on: Construction and Integration

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BalloonSat Construction:

- There is a BETTER way of building with foam core- Requires algebra and geometry

- See paper on the class website

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- When cutting foam core, remember you are cutting through three layers

- Best to cut each layer individually

- Go slow, use metal edge ruler

- Be mindful

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- Step 1: Layout box design on foam core sheet

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- Step 2: Cut it out

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- Draw center lines between inner and outer lines

- All edge cuts are at 45 degree angles to the centerline

- Cut inside edges first and only through top paper and foam not bottom paper (hinge)

- Cut outside edges last but all the way through

- Go Slow


Video here

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- Cut holes for solar cell, switches, and temp probe

- Cut hole through center for balloon attachment tube

- Tube hole should not be on open side


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- Step 3: Practice integration and make modifications

Hold box together and figure out how much insulation you want to use. Will affect how your components sit in box

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- Step 4: Glue it together and strengthen corners

- Your template was designed using the “Better Method”

- After gluing, cover you seams with aluminum tape

- Please don’t go overboard, weight is still an issue

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- Step 4: Glue it together and strengthen corners

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- Camera aperture and sensors

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Things to remember:

- Switches

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- Install switches to box and glue switches in place from back side before making electrical connections

- Keep switches on both sides and label ON/OFF positions

- Make sure to re-connect to heater, camera, and 12 V


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Things to remember:

- Switches

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- Install switches to box and glue switches in place from back side before making electrical connections

- Keep switches on both sides and label ON/OFF positions

- Make sure to re-connect to heater and 12 V


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Things to remember:

- Flight tube integration- Launch day access- Testing

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- Balloon attachment tube hole should run through center of box on non-opening side

- Make hole diameter as close to tube diameter as possible

- Secure with paper clip

- Make sure paper clip does not interfere with inner diameter


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- Install Solar Cell, must disconnect from HOBO


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- Integrate camera system and verify camera settings

- Integrate Flight String attachment tube and test clearance with sample string

- Integrate HOBO system

- Install temp probe (channel 4), metal tip must extend beyond wall of structure

- American Flag


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- Install voltage cable (channel 3)

- Install Heater

- Test switches (will use one picture)

- Tape in off position

- Team label and reward label on outside of box


1 Colorado Space Grant Consortium Gateway To Space ASEN / ASTR 2500 Class #08 Gateway To Space ASEN...

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