DemoSat II Colorado Space Grant Consortium Design (EPICS) Division Colorado School of Mines Golden Colorado Critical Design Review April 2, 2004

CSM Mission  Landing site imaging  DescentSat Video mechanism  TXSat Radio transmission mechanism  LandSat Up-right mechanism  RoverSat Rover mechanism Video mechanism

Project Goals  to gather visual images and pictures as the satellite approaches the landing site.  to initiate research supporting future missions to the lunar surface.  to explore the design issues and imagery necessary to select a landing site.

Project Demographics SpecificationValue Project Students15 Teams3 System Weight1.5kg Cost$1, Tether2.5mm Launch August 7

Potential Sats DescentSat LandSat RoverSat Landing Site Satellites The purpose of the Landing Site Sats is to gather data and information support the selection of a landing site on other moons or planets.

Storage Transmission Location Impact Visual Images Orientation & Mobility Power data conditions energy General Subsystem Diagram Landing Site Sat

Subsystem Examples  Video camera  Radio transmission  Orientation mechanism  Ramp deployment  Rover  Remote controller  BrainStem controller  Power supply

Up Down Crash

TEAM U. D. C. - JACOB KIRKLEY - DAN ALLEN - NATHAN SKITT - ZAC SELF

Satellite Subsystems MOTOR & GEARING TRACK SYSTEM & CHASSIS COMMUNICATION SYSTEMS SATELLITE HOUSING

Subsystem Description MOTOR & GEARING –Two motors will be used to drive the rovor. –Each motor will be connected directly by gears to the wheels. COST & WEIGHT Weight of motor - 50 – 100 grams of weight. Cost of each motor – $50. Weight of gears (total) – 20 grams. Cost of gears (total) – $10.

Track System & Chassis Made from Aluminum Channel, aluminum angle, and small nuts and bolts. Wheels for track system made from R/C car wheels. Track made from rubber. “L” shaped brackets to hold motors. Tracks in a Triangle shape. Chassis made from Al angle open on bottom. Cost: $30-50 Weight: Approx grams

Tracks & Chassis

Communications Systems Onboard video camera. Transmitter for the video receiver from the camera. Remote control receiver with a 3 – 5 mile range. Remote control. Two onboard 12-v batteries to run electronics. A third battery for the motors. Brainstem to control all communication functions. Estimated total cost: $900 - $1200 Estimated total weight: 400 – 500 grams.

Satellite Housing Basic pyramid design Landing possibilities Solutions to deployment Attaching to tether Breaking the box Will cost between $10 - $50

Budget PROPOSED EXPENSES: (Approx.) –Motor and gearing: $110 –Track System & Chassis: $50 –Communication Systems: $1200 –Satellite Housing: $50 Total Expenses: $1410

Team 2

Major Subsystems RoverCaseCameraPower

General Diagram

Rover Front suspension Rear Suspension Main Chassis All main electrical components are contained on the chassis Has a rolled arch for added stiffness Solar plate mounted on hinge above chassis for cooling and light purposes Case Rectangular, rounded edges Durable & easy to build Camera Mounted on front of rover for maximum visibility System Description

Level Arm Mechanism Orientation

General Power Diagram

Components Mass (g) Tires (12grams X4) Chassis Video TX Video Antenna Rear end w/ motor Camera Li-POH battery Solar Cell R/C system(receiver) R/C micro servo 1(steering) R/C servo 2(lever arm) Suspension. A-Arms(8g X4) Shock Tower Total Weight1692 Mass Budget

Structure

DemoSat Project Schedule