AAE450 Spring 2009 100g Locomotion Thursday March 5, 2009 Ryan Lehto Propulsion Group, Locomotion...
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Transcript of AAE450 Spring 2009 100g Locomotion Thursday March 5, 2009 Ryan Lehto Propulsion Group, Locomotion...
![Page 1: AAE450 Spring 2009 100g Locomotion Thursday March 5, 2009 Ryan Lehto Propulsion Group, Locomotion Phase, CAD Designer.](https://reader036.fdocuments.in/reader036/viewer/2022083009/5697bfa51a28abf838c977ce/html5/thumbnails/1.jpg)
AAE450 Spring 2009
100g Locomotion
Thursday March 5, 2009
Ryan Lehto Propulsion Group,
Locomotion Phase, CAD Designer
![Page 2: AAE450 Spring 2009 100g Locomotion Thursday March 5, 2009 Ryan Lehto Propulsion Group, Locomotion Phase, CAD Designer.](https://reader036.fdocuments.in/reader036/viewer/2022083009/5697bfa51a28abf838c977ce/html5/thumbnails/2.jpg)
AAE450 Spring 2009
Roller Rover Integration
Ryan Lehto Propulsion Group,
Locomotion Phase, CAD Designer
Camera
CPU
Transceiver
Batteries
Main Shaft with MotorOutside Shell 0.25 D
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Payload
![Page 3: AAE450 Spring 2009 100g Locomotion Thursday March 5, 2009 Ryan Lehto Propulsion Group, Locomotion Phase, CAD Designer.](https://reader036.fdocuments.in/reader036/viewer/2022083009/5697bfa51a28abf838c977ce/html5/thumbnails/3.jpg)
AAE450 Spring 2009
Mass, Power, Cost System:
– 1 Forward Propulsion DC motor w/ 221:1 Planetary Gearing– 1 DC Stepper Motor for Turning
Mass: (Motor)+ (Gearing)+ (Stepper Motor)= 0.072kg
Power: 0.543 W * 8mins = 0.072 W*hrs
Cost: $153.27* + Stepper Motor (Pending Quote)
Work Before Monday:– Reconfigure Components to optimize CM and thermal controls.– Find a smaller Camera to further reduce mass.
Ryan Lehto Propulsion Group,
Locomotion Phase, CAD Designer
*Based on current exchange rate of 1.00 EUR=1.28 USD
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AAE450 Spring 2009
Motor DataMotor
Power Input (W) Efficiency
Power Nominal Output (W)
Mass (g)
No-load Velocity (RPM)
Dia (mm)
Length (mm) Cost
349190 - RE 6 Ø6 mm, Precious Metal Brushes,
0.3 Watt 0.534 55.2% 0.3 2.3 18500 6 22.9$58.71 (45.87 Eur)
Gearing Ratio Efficiency Mass (g) Diameter mm Length mm Cost
304181- Planetary Gearhead GP 6 A Ø6 mm, 0.002 - 0.03 Nm 221:1 60% 2.9 6 25.8$94.55 (73.87 Eur)
Sources: http://shop.maxonmotor.com/ishop and http://motion-controls.globalspec.com
Stepper MotorHolding Torque (Nm) Step Angle Voltage (V)
Mass (g)
No-load Velocity (RPM)
Dia (mm)
Length (mm) Cost
ARSAPE Two Phase Stepper Motor --
AM2224-R3AV-4.8 0.045 15° 3 2 18500 6 22.9$58.71 (45.87 Eur)
Ryan Lehto Propulsion Group,
Locomotion Phase, CAD Designer
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![Page 5: AAE450 Spring 2009 100g Locomotion Thursday March 5, 2009 Ryan Lehto Propulsion Group, Locomotion Phase, CAD Designer.](https://reader036.fdocuments.in/reader036/viewer/2022083009/5697bfa51a28abf838c977ce/html5/thumbnails/5.jpg)
AAE450 Spring 2009
Assumptions 500m in 8mins = 1.04m/s average speed Acceleration of 0.001m/s Iball=Spherical Shell = 0.024 kg*m^2
Neglect axle friction Not a simple rod pendulum analysis using
CATIA to find CM
Ryan Lehto Propulsion Group,
Locomotion Phase, CAD Designer<5>
![Page 6: AAE450 Spring 2009 100g Locomotion Thursday March 5, 2009 Ryan Lehto Propulsion Group, Locomotion Phase, CAD Designer.](https://reader036.fdocuments.in/reader036/viewer/2022083009/5697bfa51a28abf838c977ce/html5/thumbnails/6.jpg)
AAE450 Spring 2009
Pendulum C of M
Ryan Lehto Propulsion Group,
Locomotion Phase, CAD Designer<6>
![Page 7: AAE450 Spring 2009 100g Locomotion Thursday March 5, 2009 Ryan Lehto Propulsion Group, Locomotion Phase, CAD Designer.](https://reader036.fdocuments.in/reader036/viewer/2022083009/5697bfa51a28abf838c977ce/html5/thumbnails/7.jpg)
AAE450 Spring 2009
Forward Motion Pendulum Torque needed to raise 45
m=mass of pendulum 0.488kg g= lunar gravity 1.635 m/s^2 Lcm=Distance of center of mass from
rotation axis 0.053m = τ torque needed 0.0378Nm
Ryan Lehto Propulsion Group,
Locomotion Phase, CAD Designer<7>
![Page 8: AAE450 Spring 2009 100g Locomotion Thursday March 5, 2009 Ryan Lehto Propulsion Group, Locomotion Phase, CAD Designer.](https://reader036.fdocuments.in/reader036/viewer/2022083009/5697bfa51a28abf838c977ce/html5/thumbnails/8.jpg)
AAE450 Spring 2009
Ryan Lehto Propulsion Group,
Locomotion Phase, CAD Designer<8>
Camera
Transceiver
Main Shaft with Motor
CPU
Payload