Tacho Lycos PDR Presentation...TDS –Data Storage 25 Data Storage Create destination directory on...
Transcript of Tacho Lycos PDR Presentation...TDS –Data Storage 25 Data Storage Create destination directory on...
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Tacho LycosPDR Presentation
November 14, 2016
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Overview
• Vehicle Summary
• Flight Data
• Avionics
• Recovery System
• Payload• Target Differentiation System (TDS)
• Upright Landing System (ULS)
• Compliance
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Vehicle Dimensions
• Length: 113.0 in
• Outer Diameter: 6.2 in
• Inner Diameter: 6.0 in
• Loaded Weight: 46.2 lb
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Vehicle Construction Sections
• Construction Sections:• Nosecone
• Upper airframe (UAF)
• Avionics bay (AV)
• Payload bay (PBR)
• Fin can
• Flight Sections:• Nosecone
• Middle airframe (MAF)
• Fin can
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Vehicle – Nosecone
• 5:1 Ogive nosecone
• Fiberglass body with aluminum tip
• Exposed length: 30.0 in
• Shoulder length: 5.0 in
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Vehicle – UAF and AV
Upper Airframe (UAF)
• Length: 12.0 in
• Coupler length: 8.0 in• Overlap length: 4.0 in
Avionics Bay (AV)
• Length: 17.5 in
• Threaded rods to hold equipment and bulkheads
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Vehicle – Payload Bay
• Length: 20.0 in
• Coupler length: 8.0 in• Overlap length: 4.0 in
• Payload length: 14.0 in• Payload diameter: 4.0 in
• Payload rail: 15.5 in• 0.5 in 80-20 T-slot rails
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Vehicle – Fin Can
• Length: 34.0 in
• Coupler length: 8.0 in• Overlap length: 4.0 in
• 4 trapezoidal fins
• Houses L1120W• 2 centering rings
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Vehicle Stability
Pre-burn:
CG: 71.7 in aft of nosecone tip
CP: 84.8 in aft of nosecone tip
Post-burn:
CG: 63.5 in aft of nosecone tip
CP: 84.8 in aft of nosecone tip
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Stability: 2.1 Caliber
Stability: 3.5 Caliber
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Motor Selection
• Apogee at ~5,400 ft
• Rail exit velocity: 59.2 ft/s• 12 ft launch rail at 85.0°
• Thrust-to-Weight Ratio: ~7.6• Max thrust, max weight
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Recovery Software Systems
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Stratologger SL100 9V Power
Supply
Drogue Chute
Charge
Main Chute
Charge
Entacore AIM 3.0
Redundant
Drogue Chute
Charge
Redundant
Main Chute
Charge
9V Power
Supply
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Recovery – Apogee Event
• Stratologger altimeter fires charge at apogee
• Entacore altimeter fires redundant charge 1.0 s later to guarantee MAF and fin can separation
• Deploys 2.0 ft diameter drogue parachute
• Deploys payload
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Recovery – Final Event
• Stratologger altimeter fires charge at 700 ft AGL
• Entacore altimeter fires redundant charge 1.0 s later to guarantee nosecone and MAF separation
• Deploys 15.0 ft diameter main parachute
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Recovery – Vehicle KE
• Drogue parachute will slow rocket to <90.0 ft/s
• Main parachute will slow rocket to <11.0 ft/s
• Landing weight: 32.9 lb
• Landing velocity: 9.3 ft/s
• Nominal touchdown: 55 ft-lb
• Max vehicle impact: 10.6 ft/s
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Recovery – Payload KE
• Main parachute at 700.0 ft• Jolly Logic retention device
• Slows payload to <15.0 ft/s
• Landing weight: 7.0 lb
• Nominal touchdown: 22.0 ft-lb
• Allows for 45-60 s for target identification operation
• Max payload impact: 26.3 ft/s
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Payload Subsystems
Upright Landing System (ULS)
• Hardware
• Deployment progression
Target Differentiation System (TDS)
• Software schematic
• Logic progression
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ULS – Hardware
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ULS – Deployment Progression
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TDS – Software Schematic
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Method Step &Sub-Method Step
Enter & Exit New Sub-Method
TDS – Logic Progression
1. Initial sensing
2. Target search:1. Identify targets
2. Determine relative location
3. Data confirmation/storage
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Begin New Method
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TDS – Initial Sensing
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Power OnInitialize
sensors and components
Apogee reached?
Target Search
Method
Launch occurred?
Obtain telemetry
data
Obtain telemetry
data
No
No
Yes
Yes
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TDS – Identifying Targets
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Enter
Exit
Identify regions of large color
density
Does the region
match the 1st
prescribed RGB value?
Does the region
match the 2nd
prescribed RGB value?
Does the region
match the 3rd
prescribed RGB value?
Yes Yes Yes
NoNoNo
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TDS – Relative Location
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Enter
Exit
Archive image and log
telemetry data
Calculate targets’
positions relative to X
Calculate targets’ positions relative to other targets
Have targets been
detected before?
Calculate location
uncertainty
Calculate position error
Targets detected?
Exit
No
Yes
No
Yes
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TDS – Data Confirmation
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Target Search
Method
Is current altitude less
than the prescribed
ceiling?
Obtain telemetry data
Perform Target Search
Is current altitude less
than the prescribed
floor?
Data Storing
No No
Yes Yes
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TDS – Data Storage
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Data Storage
Create destination directory on SD card
with name of date and time stamp
Data Storing
Copy telemetry data log to destination directory
Copy image analysis and target tracking log to destination directory
Copy captured images to destination directory
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Compliance Plan
Launch Vehicle Testing:
• Altimeter pressure calibration
• GPS transmission and accuracy
• Stage separation and deployment
Payload Testing:
• Deployment system
• Camera field-of-view (FOV)
• Unstable descent recovery
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Questions?