MNROCKCONCEPTUAL DESIGN REVIEW

University of MinnesotaWilliam Ung

Scott Balaban

Bryce Schaefer

Tom Thoe

11/3/2008

Mission Overview

Objectives Results Science Theory History Requirements Success Criteria Benefits

Objectives

To build a sensor package to characterize the flight of the rocket

To record changes in the Earth’s magnetic field with respect to height

To record GPS data to plot 3-dimensional course of rocket and to see if it is possible to gather such data

To measure the spin rate of the rocket with an array of light sensors

Results

The conditions which will be experience by a payload on similar flights

Whether it is possible to record GPS data with the given conditions

Determine how the rocket’s trajectory changes over time

To determine the amount of light sensors that are necessary to calculate spin rate

Science Theory

The accelerometers, pressure sensor, temperature sensor, light sensors, vibration sensors, and camera will all record the environment over time. This will allow other payloads to design to meet these conditions.

The magnetometer and GPS receiver will record data to test the possibility of recording such data from suborbital rockets.

History

RockOn! Workshop summer ’08 used identical accelerometers, similar pressure sensor, and had a temperature sensor Results: A partial characterization of the flight.

Accelerations were recorded, along with temperature, but pressure was beyond the sensor’s capability, and vibration was not recorded.

Spacecraft Senior Design ’08 designed a payload for a suborbital rocket to characterize the flight Results: This design was a conceptual payload

design and was never built.

Requirements

Weight: 4.25lbs Center of Gravity is within .1x.1x1 inch

(x,y,z) of the center Max Height: 3.1 inch Max Diameter: 9.2 inch Withstand 20Gs in Z-direction and +/- 10 Gs

in the X- and Y-directions Self contained power system All sensors must not cause electromagnetic

interference

Success Criteria

Payload survives Data is retrieved from the computer Data is able to be analyzed Theories are able to be tested

Benefits

A characterization of the rocket flight will be available to provide information that could prevent structural and sensor failure of a payload.

Compare actual flight profile with that of published data.

Determine the possibility of GPS tracking of suborbital rockets.

Design (How will you meet your objective)

Required Hardware Parts Drawings Functional block diagram

** Focus on how your design and associated hardware will be used to meet your objective.

Parts

Accelerometers: same as from RockOn! workshop Pressure sensor: ASDX030A24R Temperature sensor: CS490000 Vibration sensors: Crossbow CKL100HF3* Camera: Canon Powershot A570 IS Light sensors: LX1972 Magnetometer: Honeywell HMC1043* GPS receiver: SiGe GN3S Sampler V2

*Sensors are still being researched. Probable ones listed.

Functional Block Diagram

Vibration Sensors

RockSat Payload Canister User Guide Compliance

Mass, Volume Estimated fraction of allotment vs. assigned fraction:

3.5lbs/4.25lbs Estimated volume: around 105 in3 , but definitely <210 in3

Payload activation? G-switch activation Has been used in previous RockOn! workshop to activate

payloads Rocket Interface

Shorting wires

Shared Can Logistics Plan

University of Minnesota and University of Wyoming Summary of each mission (one-liner)

Minnesota - To characterize the flight of the rocket and attempt to record data using techniques untested in suborbital flight

Wyoming - group 1:Multi-sensor: Rocket flight parameter measurements Wyoming - group 2:Explore rocket flight effects on electrical and crystal

oscillators Plan for collaboration on interfacing: email, occasional conference

call Wyoming needs optical port for camera MNRock needs optical port for camera, light sensor array, and GPS

receiver Structural interfacing (Start considering…present at PDR)

Similar to RockOn! workshop To the top and bottom bulkheads

Management

Organizational Chart Schedule Preliminary mass/monetary budgets

Gantt Chart

We are using a Gantt Chart for scheduling

Schedule

08-18-2008 RockSat Payload User’s Guide Released 09-08-2008 Submit Intent to Fly Form 09-12-2008 Initial Down Selections Made 09-30-2008 Online Progress Report 1 Due 10-10-2008 Earnest Payment of $1,000 Due 10-15-2008 Conceptual Design Review (CoDR) Due 10-30-2008 Online Progress Report 2 Due 11-14-2008 Preliminary Design Review (PDR) Due 11-28-2008 Online Progress Report 3 Due 12-12-2008 Critical Design Review (CDR) Due 12-19-2008 Final Down Select—Flights Awarded 01-23-2009 First Installment Due ($5,500) 01-30-2009 RockSat Payload Canisters Sent to Customers

Schedule (cont.)

01-30-2009 Online Progress Report 4 Due 02-20-2009 Individual Subsystem Testing Reports Due 02-27-2009 Online Progress Report 5 Due 03-27-2009 Payload Subsystem Integration and Testing Report Due 04-10-2009 Final Installment Due ($5,500) 04-17-2009 First Full Mission Simulation Test Report Due 04-30-2009 Online Progress Report 6 Due 05-22-2009 Second Full Mission Simulation Test Report Due 05-29-2009 Online Progress Report 7 Due 06-10-2009 Launch Readiness Review (LRR) Teleconference 06-(22-24)-2009 MOI and Vibration Testing at WFF 06-24-2009 RockSat Payload Canister Integration with WFF 06-26-2009 Launch Day

Mass/Monetary Budget

Mass Budget: 4.25 lbs Monetary Budget: $5000

Includes equipment to build Includes spares for multiple flights/failures

Conclusions

A combination of practical characterization and experimental research form to make this sensor package a valuable one to fly at this next RockOn! workshop.

Due to communication problems, this Conceptual Design Review was thought to be in December until a short time before the CoDR slides were required. These communication problems were an accumulation of smaller ones, and have hopefully been resolved.

No CSci or EE personnel are available currently for our project, leaving some sensor questions and hardware requirements unknown. We are actively trying to remedy this problem and are confident personnel will be found shortly. Until such time, progress will simply be slower than hoped.

If chosen to fly at the RockOn! workshop of ‘09, the MNRock team hopes to complete a payload environment document to provide more precise payload requirements for future workshops by the end of the summer.