Sami direct ,business ,palan , business ,by kb.choudhary , 08097468888 , 08097444402
Mohit Bhoite and Saurabh Palan MEAM 610. Introduction Blimps Anatomy Design Control Sensing.
-
Upload
gwen-caldwell -
Category
Documents
-
view
218 -
download
0
Transcript of Mohit Bhoite and Saurabh Palan MEAM 610. Introduction Blimps Anatomy Design Control Sensing.
![Page 1: Mohit Bhoite and Saurabh Palan MEAM 610. Introduction Blimps Anatomy Design Control Sensing.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649d9f5503460f94a8a472/html5/thumbnails/1.jpg)
BLIMPSMohit Bhoite and Saurabh Palan
MEAM 610
![Page 2: Mohit Bhoite and Saurabh Palan MEAM 610. Introduction Blimps Anatomy Design Control Sensing.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649d9f5503460f94a8a472/html5/thumbnails/2.jpg)
IntroductionBlimps
AnatomyDesignControlSensing
![Page 3: Mohit Bhoite and Saurabh Palan MEAM 610. Introduction Blimps Anatomy Design Control Sensing.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649d9f5503460f94a8a472/html5/thumbnails/3.jpg)
Anatomy of a Blimp
Envelop
Gondola
Motors
Stabilizers
Propellers
“A blimp, or non-rigid airship, is an airship without an internal supporting framework or keel.” - wiki
![Page 4: Mohit Bhoite and Saurabh Palan MEAM 610. Introduction Blimps Anatomy Design Control Sensing.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649d9f5503460f94a8a472/html5/thumbnails/4.jpg)
HELIUM - Calculating LiftAt standard temperature and pressure, mass density of
Air : ρair = 1.293 kg/m3
Helium : ρHe = 0.178 kg/m3
Neon: ρHe = 0.9 kg/m3
Wload = [(ρair – ρHe) x volume – Wenv ] Kg
Grade A Helium gas = 99.995% He and 0.005% Ne
Wload = [(ρair - 0.99995ρHe - 0.00005ρNe) x volume – Wenv ] Kg
![Page 5: Mohit Bhoite and Saurabh Palan MEAM 610. Introduction Blimps Anatomy Design Control Sensing.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649d9f5503460f94a8a472/html5/thumbnails/5.jpg)
HELIUM - Calculating LiftWload = [1.1149 x volume – Wenv ] Kg
Thumb rule : 1m3 of helium can lift 1.1 kg of load
![Page 6: Mohit Bhoite and Saurabh Palan MEAM 610. Introduction Blimps Anatomy Design Control Sensing.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649d9f5503460f94a8a472/html5/thumbnails/6.jpg)
Latex Balloons vs. Rigid EnvelopsWhich one is better?
Balloons have internal pressure much higher than atmospheric => unnecessary helium mass => no extra lift
Rigid envelops will have pressure equivalent to atmospheric pressure => better efficiency
![Page 7: Mohit Bhoite and Saurabh Palan MEAM 610. Introduction Blimps Anatomy Design Control Sensing.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649d9f5503460f94a8a472/html5/thumbnails/7.jpg)
Envelop Designs
![Page 8: Mohit Bhoite and Saurabh Palan MEAM 610. Introduction Blimps Anatomy Design Control Sensing.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649d9f5503460f94a8a472/html5/thumbnails/8.jpg)
Envelop DesignsOff-the-shelf OptionsCost
$25, 7cu feet
$13, 5cu feet
$12
$4, 3’ dia
![Page 9: Mohit Bhoite and Saurabh Palan MEAM 610. Introduction Blimps Anatomy Design Control Sensing.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649d9f5503460f94a8a472/html5/thumbnails/9.jpg)
PropulsionDC Brushed motors + PropellersFlapping wings/fins !
![Page 10: Mohit Bhoite and Saurabh Palan MEAM 610. Introduction Blimps Anatomy Design Control Sensing.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649d9f5503460f94a8a472/html5/thumbnails/10.jpg)
Propeller Placements
![Page 11: Mohit Bhoite and Saurabh Palan MEAM 610. Introduction Blimps Anatomy Design Control Sensing.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649d9f5503460f94a8a472/html5/thumbnails/11.jpg)
Propeller Placements
![Page 12: Mohit Bhoite and Saurabh Palan MEAM 610. Introduction Blimps Anatomy Design Control Sensing.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649d9f5503460f94a8a472/html5/thumbnails/12.jpg)
Propeller Placements
![Page 13: Mohit Bhoite and Saurabh Palan MEAM 610. Introduction Blimps Anatomy Design Control Sensing.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649d9f5503460f94a8a472/html5/thumbnails/13.jpg)
Controller Architecture
Main Controller(uP, uC)
Wireless Link
Motor Driver
Motors, Servos
Sensors
Camera
![Page 14: Mohit Bhoite and Saurabh Palan MEAM 610. Introduction Blimps Anatomy Design Control Sensing.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649d9f5503460f94a8a472/html5/thumbnails/14.jpg)
SensorsGyrosAccelerosGPSDigital CompassUltrasonicPressure sensorIRVision
![Page 15: Mohit Bhoite and Saurabh Palan MEAM 610. Introduction Blimps Anatomy Design Control Sensing.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649d9f5503460f94a8a472/html5/thumbnails/15.jpg)
SensorsGyrosAccelerosGPSDigital CompassUltrasonicPressure sensorIRVision
![Page 16: Mohit Bhoite and Saurabh Palan MEAM 610. Introduction Blimps Anatomy Design Control Sensing.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649d9f5503460f94a8a472/html5/thumbnails/16.jpg)
Digital CompassSpecifications
Voltage 5v
Current 20mA Typ.
Resolution 0.1 Degree
Accuracy 3-4 Degrees approx (after calibration)
Output 1 Timing Pulse 1mS to
37mS in 0.1mS increments
Output 2 I2C Interface, 0-255 and 0-3599
SCL Speed up to 1MHz
Weight 0.03 oz.
Size 32mm x 35mm
Devantech, acroname.com, $57
![Page 17: Mohit Bhoite and Saurabh Palan MEAM 610. Introduction Blimps Anatomy Design Control Sensing.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649d9f5503460f94a8a472/html5/thumbnails/17.jpg)
Digital Compass
Sparkfun.com, $60
•I2C interface •2.7 to 5.2V supply range•1 to 20Hz selectable update rate•True drop-in solution•0.5 degree heading resolution•1 degree repeatability•Supply current : 1mA @ 3V
![Page 18: Mohit Bhoite and Saurabh Palan MEAM 610. Introduction Blimps Anatomy Design Control Sensing.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649d9f5503460f94a8a472/html5/thumbnails/18.jpg)
Pressure SensorsBarometric pressure
sensing for altitude measurement
Can achieve resolution of about 10cm at sea level
Pressure decreases at the rate of 100 millibars per 800 meters
$55
![Page 19: Mohit Bhoite and Saurabh Palan MEAM 610. Introduction Blimps Anatomy Design Control Sensing.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649d9f5503460f94a8a472/html5/thumbnails/19.jpg)
Thank you!