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Critical Design Review of the AREND UAS (short version)
Citation preview
AREND Aircraft for Rhino and ENvironmental
Defense
Critical Design Review
July 15, 2014
Agenda 1. Introduction (5 mins): Laura
2. Background & Conops (10 mins): Lelanie
3. Systems Engineering (10 mins): Andrew/AJ
4. Project Management (10 mins): Laura
5. Subsystems (10 mins each) o Aaron/Chris (Embedded Systems/Control/Communication)
o Aaron (On-board Sensors)
o Break (10 mins)
o Andrew (Power/Propulsion)
o Lelanie (Fuselage)
o Johannes (Wings/tail/empennage)
o Matt (Testing & Integration)
4. Request for Actions: All
2 Overview Systems
Engineering Project
Management Subsystems Summary
Industry Advisors
CSIR Pretoria
NIST
Four Winds Interactive
Wildlife Protection Solutions
Denver Zoo
Center Wildlife Management
Blue Atmos LLC
First RF
Corp
Athena ISR
Airspace Guardian
Helios Torque Fusion
AMA Pilots
Sans Souci Enterprise
sUAS News
Many thanks to our advisors and contributors!
3
Laura Kruger Andrew Levine Aaron Buysse Nikhil Shetty Justin George Chris Womack AJ Gemer Christine Fanchiang
4
University of Pretoria (South Africa) Lelanie Smith Karl Grimsehl Sune Gerber Byron Coetser Michael Kruger Joachim Huyssen
Mayank Bhardwaj Matt Busby John Russo David Soucie Anna Rivas Neel Desai Cameron Brown Prasanta Achanta
University of Stuttgart (Germany) Johannes Schneider Tarik Özyurt Rick Lohmann Tim Baur Tim Wegmann
Team Members University of Colorado Boulder (United States)
Metropolia University (Finland) Joe Hotchkiss John Malangoni Balázs Kovács Nikita Korhonen
Joe Tanner (CU) Donna Gerren (CU) Alexandra Musk (CU) Laurent Dala (UP) Wouter Van Hoven (UP) Joe Hotchkiss (MU) Holger Kurz (US) Peter Middendorf (US) Dominique Bergmann (US) Claus Dieter-Munz (US)
5
Team Members Academic Advisors
Jason Coder David Novotny Jeffrey Guerrieri Molly Kainuma Rebecca McCloskey Brian Aucone Patrick Egan Richard Soto Eric Schmidt Rebecca Vandiver Philip Moffett Phelps Lane Dean Paschen Joe Pirozzoli Lee Jay Fingersh Jason Sand Luigi Moretti Will Fox
Tom Spendlove Charlie Lambert Marshall Lee Matt Bracken Tom McKinnon Brandon Lewis Amanda Harvey Christensen Flemming Dillon Jensen Barbara Bicknell Brett Anderson
Industry Advisors
Agenda 1. Introduction
2. Background & Conops
3. Systems Engineering
4. Project Management
5. Subsystems o Aaron/Chris (Embedded Systems/Control/Communication)
o Aaron (On-board Sensors)
o Andrew (Power/Propulsion)
o Lelanie (Fuselage)
o Johannes (Wings/tail/empennage)
o Matt (Testing & Integration)
4. Request for Actions: All
6 Overview
Systems Engineering
Project Management
Subsystems Summary
Project Objectives Find Poachers before they kill
within the 20,000km2 KNP
7
Project Objectives
8
Find Poachers before they kill
within the 20 000km2 KNP
8
9
80km
9 Overview Systems
Engineering Project
Management Subsystems Summary
Project Objectives
300km
Search Sectors with a Reach
of 30km (Diameter 60km)
Warning System using Ground Sensors
10 Overview Systems
Engineering Project
Management Subsystems Summary
Concept of Operations
Radio Repeater
Command Centre Search Sector
Search Footprint
Launch Station
Delivery Waypoint
Landing
1
2
3
4 Mission Segments:
1. Delivery
2. Arrival
3. Search
4. Return
Ground Station
Concept of Operations
11 Overview Systems
Engineering Project
Management Subsystems Summary
Search Segment
Sea
rch
H
eig
ht
12 Overview Systems
Engineering Project
Management Subsystems Summary
Design Objectives
13
Long Range
Far Reach
Quick response Vehicle
Low Noise
High Resolution Sensor
High Data Rate Transmission (*short-term)
(On-board Processing *long-term)
Autonomous Flight
13 Overview Systems
Engineering Project
Management Subsystems Summary
Agenda 1. Introduction
2. Background & Conops
3. Systems Engineering
4. Project Management
5. Subsystems o Aaron/Chris (Embedded Systems/Control/Communication)
o Aaron (On-board Sensors)
o Andrew (Power/Propulsion)
o Lelanie (Fuselage)
o Johannes (Wings/tail/empennage)
o Matt (Testing & Integration)
4. Request for Actions: All
14 Overview
Systems Engineering
Project Management
Subsystems Summary
Systems Overview
15
Top System Requirements:
AREND_001
The AREND aircraft system shall be capable of manual/radio flight control with autonomous capabilities. Compliance Criteria: Autonomous capabilities include; 1) auto-stabilization, 2) flight to pre-programmed waypoint destinations, 3) flight to dynamically updated waypoints.
AREND_002 The AREND aircraft system shall be capable of quickly delivering a payload to any location within its sector, silently performing a search pattern, returning to a landing area, and landing safely within the South African Park or Reserve.
AREND_003 The AREND aircraft structure shall be capable of supporting payload sensor packages within a fixed mass and volume. The allotted structure and volume shall be designed to accept a variety of payload packages, and particularly sized to support the largest expected payload.
AREND_004 The AREND payload shall include a gimbal-stabilized visual camera system, capable of capturing quality image data throughout the search pattern of the flight mission.
AREND_005
The AREND aircraft system shall protect all ground systems and aircraft structure and components during mission phases. Protection includes KNP environmental hazards, impacts upon landing, and g-loading from maneuvering and take-off. Compliance Criteria: 1) mission phases include; a) take-off, b) delivery, c) arrival, d) search, e) return, and f) landing. 2) environmental hazards are listed in the KNP Environmental Hazards Table, 3) the aircraft shall utilize skid landings in unpaved fields, 4) maximum G-load expectations are listed in Flight Mission Parameters Table.
Overview Systems
Engineering Project
Management Subsystems Summary
Systems Overview
16 Overview Systems
Engineering Project
Management Subsystems Summary
Systems Overview Data Flow
IMU Altimeter Accelerometer
17
Thermo-couples Voltage meas. State of Charge meas.
Overview Systems
Engineering Project
Management Subsystems Summary
Systems Approach
Balancing Payload: Design Constraints Component Selection & Mission Design
18
Short-term
Long-term
Overview Systems
Engineering Project
Management Subsystems Summary
Systems Approach
Balancing Aircraft: Design Constraints System Design & Total Mass
19 Overview Systems
Engineering Project
Management Subsystems Summary
Technical Risks C
on
seq
uen
ce
In-Flight Battery
Failure
Damage Aircraft/ Components Upon
Landing
Deferred Launch Method Design
Final Aircraft Exceeding
Budgeted Mass
Component Overheating
Harsh
Environment
Possibility
20 Overview Systems
Engineering Project
Management Subsystems Summary
Technical Risks
21
Risk Mitigation
1. Damage Aircraft/ Components Upon Landing Thorough stability analysis on landing skid design
Landing system design to keep aircraft above debris and from toppling over
Reinforced structure for nose gimbal and casing
2. Component Overheating Placement of heat sensitive components away from heat sources
Custom venting designed into fuselage to promote heat dissipation
3. Final Aircraft Exceeding Budgeted Mass 1. Overdesign the wing to handle ~20% more than the expected total aircraft mass
2. Overdesign the propulsion system to support higher thrust/power needs
3. Allow flexibility in duration/range of flight
Overview Systems
Engineering Project
Management Subsystems Summary
Systems Conclusion
22
*Component Masses that are not included; 1) Gimbal structure 2) Landing Skids 3) Variable payloads 4) Screws, bolts, adhesive 5) Wiring 6) Various adapters and mounting
surfaces
Budgeted Mass [kg]
Current Mass [kg]
Difference [kg]
% Over Budget
Total STRC 6.48 6.500 -0.020 0.31%
Total COMM 0.50 0.494 0.001 Good
Total EMBS 1.31 1.384 -0.079 6.04%
Total POWR 0.18 0.000 0.180 Good
Total PROP 7.47 7.462 0.008 Good
Total PYLD-A 1.80 0.701 1.099 Good
Margin 0.27 NA NA Good
Totals 18.00 16.54
39%
3%
9%
0%
45%
4%
PYLD-A Mass [kg]
Total STRC
Total COMM
Total EMBS
Total POWR
Total PROP
Total PYLD-A
Budgeted Mass [kg]
Current Mass [kg]
Difference [kg]
% Over Budget
Total STRC 5.76 6.500 -0.740 12.85%
Total COMM 0.44 0.494 -0.054 12.34%
Total EMBS 1.16 1.384 -0.224 19.29%
Total POWR 0.16 0.000 0.160 Good
Total PROP 6.64 7.462 -0.822 12.37%
Total PYLD-A 1.60 0.701 0.899 Good
Margin 0.24 NA NA Good
Totals 16.00 16.54
Overview Systems
Engineering Project
Management Subsystems Summary
Agenda 1. Introduction
2. Background & Conops
3. Systems Engineering
4. Project Management
5. Subsystems o Aaron/Chris (Embedded Systems/Control/Communication)
o Aaron (On-board Sensors)
o Andrew (Power/Propulsion)
o Lelanie (Fuselage)
o Johannes (Wings/tail/empennage)
o Matt (Testing & Integration)
4. Request for Actions: All
23 Overview
Systems Engineering
Project Management
Subsystems Summary
PM Overview • Team Structure
• Schedule
• Budget
• Risks
• Export Regulations
• Management Approach
24 Overview Systems
Engineering Project
Management Subsystems Summary
AREND
University Advisors
Industry/ Agency
Advisors
AREND Global Team
25 Overview Systems
Engineering Project
Management Subsystems Summary
Academic Advisors & Leads
Jean Koster
CU Donna Gerren
CU Joe
Tanner CU
Laura Kruger
CU
Laurent Dala UP
John Monk
UP
Wouter van Hoven
UP Lelanie Smith
UP
Jon Malangoni
MU
Joe Hotchkiss
MU
Ewald Kraemer
US
Claus-Dieter Munz
US
Peter Middendorf
US
Dominique Bergmann
US
Holger Kurz US
26 Overview Systems
Engineering Project
Management Subsystems Summary
Vehicle Structure
•AJ Gemer
•Lelanie Smith
•Johannes Schneider
Power & Propulsion
•Andrew Levine
•John Russo
•Prasanta Achanta
ES/Control
•Aaron Buysse
•Chris Womack
•Myank Bhardwaj
•Neel Desai
•Cameron Brown
Sensors
•Nikhil Shetty
•Jon Malangoni
Testing & Integration
•Justin George
•Matt Busby
Systems Engineer: Andrew Levine
Industry Advisors
CFO: Phelps Lane
Project Manager: Laura Kruger
Academic Advisors
Deputy PM: Christine Fanchiang
27
CAD & Manufacture Engineer: AJ Gemer
Import/Export Regulations: Laura Kruger
Overview Systems
Engineering Project
Management Subsystems Summary
Schedule
28 Overview Systems
Engineering Project
Management Subsystems Summary
Major Milestones July Aug Sept Oct Nov Week 13-19 20-26 27-2 3-9 10-16 17-23 24-30 31-6 7-13 14-20 21-27 28-4 5-11 12-18 19-25 26-1 2-8 9-15
CDR
FRR Due
Flight Test Report Due
1st Hardware Shipment
Export/Import List Due
2nd Hardware Shipment
Manufacturing
Testing & Integration
Students Fly to SA
Final Demo and Design Report Due
Wings/Tail/Empennage
Fuselage
Power/Prop
Embedded Systems
Ground Support
Ground Sensor Network
Systems Engineering
Project Management
Contingency
Budget
6.7%
20.0%
20.0%
13.6%
4.7%
Total Cost Estimate: $31,000
29 Overview Systems
Engineering Project
Management Subsystems Summary
10.0%
8.4%
6.9%
9.9%
Project Risks C
on
seq
uen
ce
Budget
Project Timeline
Global Testing Personnel
Regulations
Conflict
Possibility
30 Overview Systems
Engineering Project
Management Subsystems Summary
Project Risk Mitigation
31 Overview Systems
Engineering Project
Management Subsystems Summary
• Project Timeline o Continuous communications
o Detailed design
• Budget o Begin second round of crowdfunding and pursue investment opportunities
o Approach companies for discounts
• Personnel o New semester can target more students
• Global Testing o Detailed test and integration plans
o Detailed Interface Control Documents
• Regulations Conflict o Vigilant and early ITAR/export control reviews
Import/Export
• Key team members receive online export/ITAR
training
• Coordinating with CU’s Office of Research Integrity
and Regulatory Compliance
32 Overview Systems
Engineering Project
Management Subsystems Summary
STA Exception Checklist • Notify the consignee of the ECCN (Export Control
Classification Number) of each item shipped;
• Inform the consignee to submit the required consignee statement prior to export; and
• With each shipment, notify the consignee in writing that the shipment is made under STA
• Prior to departure, report the license exception STA transaction in the Automated Export System (AES) and include the appropriate AES license code C59 that designates that the shipment was made under License Exception STA.
• http://www.census.gov/foreign-trade/aes
33 Overview Systems
Engineering Project
Management Subsystems Summary
Management Approach
• Facilitate communications between team
• Engineering buildup (“grassroots”) cost estimating
• One procurement agent and budget revision
signoffs
• Continued fundraising and awareness campaigns
• Reduce shipment time lag by coordinating
fabrication, testing, & integration assignments
34 Overview Systems
Engineering Project
Management Subsystems Summary
Agenda 1. Introduction
2. Background & Conops
3. Systems Engineering
4. Project Management
5. Subsystems o Aaron/Chris (Embedded Systems/Control/Communication)
o Aaron (On-board Sensors)
o Jon (Sensor Network)
o Andrew (Power/Propulsion)
o Lelanie (Fuselage)
o Johannes (Wings/tail/empennage)
o Matt (Testing & Integration)
4. Request for Actions: All
35 Overview Systems
Engineering Project
Management Subsystems Summary
Subsystems
Embedded Systems (ES)/Control/Communications
On-Board Sensors
Power/Propulsion
Fuselage
Wings/Tail/Empennage
Testing & Integration
36 Overview Systems
Engineering Project
Management Subsystems Summary
ES/Comm Conclusion • On-board processor and autopilot support a
variety of inputs and outputs for additional
sensors
• Ground station software is user-friendly o Easy point-and-click control of UAV
o Displays telemetry and state of health data from batteries
• Communication system allows for long-
range streaming of HD video
37 Overview Systems
Engineering Project
Management ES/Control/
Comms Summary
Subsystems
Embedded Systems (ES)/Control/Communications
On-Board Sensors
Power/Propulsion
Fuselage
Wings/Tail/Empennage
Testing & Integration
38 Overview Systems
Engineering Project
Management Subsystems Summary
Sensors Overview
EO/IR field
Poachers
A combination of sensors • On the UAV
• Visual and IR cameras • RFID
• Ground sensor network
Ground Sensors ( ) Sensor Field ( )
39 Overview Systems
Engineering Project
Management Sensors Summary
Sensors Conclusion • The system is being designed keeping
in mind long term possible
technologies
• Overdesigning the aircraft for power,
mass and volume in order to
accommodate advancements in
technology
Overview Systems
Engineering Project
Management Sensors Summary
Subsystems
Embedded Systems (ES)/Control/Communications
On-Board Sensors
Power/Propulsion
Fuselage
Wings/Tail/Empennage
Testing & Integration
41 Overview Systems
Engineering Project
Management Subsystems Summary
Propulsion Overview
42 Overview Systems
Engineering Project
Management Power/Prop Summary
Propulsion Constraints Design Constraints: 1. Noise < 45 dB from the audio horizon (275 m, or ~900 ft) 2. Mechanical output power > 0.79 kW 3. Propulsion system mass (incl. batteries) ≤ 42.5% total aircraft
mass (7.47 kg for 18 kg aircraft or 6.64 kg for 16 kg aircraft) Minimum range of 90 km, must be less than 300 km
(ITAR) 4. Propulsion method not to be mounted in the nose
Camera gimbal constraint 5. Minimize the overall mass
Components & additional structural mass required
43 Overview Systems
Engineering Project
Management Power/Prop Summary
Propulsion Performance
0
500
1000
1500
2000
2500
3000
3500
0 2000 4000 6000 8000
Mec
h. P
ow
er [
W]
RPMs
20x10 (2-Blade) Propeller
Req'd Power [W] Max Tacon Power
Theoretical Performance: 20x10, 2-Blade Max @4900 RPMs 0.95 kW Mech. Power Tip Speed ~38% Mach 1
44
0
20
40
60
80
100
120
0 1000 2000 3000 4000 5000 6000 7000 8000
RPMs
20x10 (2-Blade) Propeller
Stat. Thrust [N] Est. Speed [km/hr] Max Tacon RPM
80 km/hr 46 N Thrust
Overview Systems
Engineering Project
Management Power/Prop Summary
Propulsion Performance Theoretical Performance: 16x13, 4-Blade Max @4820 RPMs 0.87 kW Mech. Power Tip Speed ~30% Mach 1
45
95 km/hr 32 N Thrust
0
200
400
600
800
1000
1200
0 1000 2000 3000 4000 5000 6000
Mec
h. P
ow
er [
W]
RPMs
16x13 (4-Blade) Propeller
Req'd Power [W] Max Tacon Power
0
20
40
60
80
100
120
0 1000 2000 3000 4000 5000 6000
RPMs
16x13 (4-Blade) Propeller
Stat. Thrust [N] Est. Speed [km/hr] Max Tacon RPM
*Likely prop stall characteristics that are not included in this analysis. Experimental testing required
Overview Systems
Engineering Project
Management Power/Prop Summary
Propulsion Performance
Preliminary Noise Testing: 100% Throttle (averages)
300 ft => 60 dB (1 measurement) 200 ft => 53 dB (3 measurements) 100 ft => 61.25 dB (4 measurements) 50 ft => 67 dB (3 measurements)
50% Throttle (averages) 100 ft => 56 dB (3 measurements) 50 ft => 61 dB (5 measurements)
*Ambient Noise in Bush 45 dB
Further testing required to determine the static audio horizon for Tacon Bigfoot 160 w/ 20x10 APC (2-blade) prop (and other props).
46 Overview Systems
Engineering Project
Management Power/Prop Summary
Propulsion Conclusion 1. Motor: Tacon Bigfoot 160 2. Open Propeller, Pusher Configuration 3. Theoretical Optimal Propeller;
16x13, 5-blade prop lowest tip speed (~30% Mach 1) while achieving performance needs
20x10 APC (2-blade); tip speed ~38% Mach 1
4. Pheonix Edge 100 ESC 5. 6S (22.2 V) Battery Pack
Capacity depends on propeller choice Current estimated capacity required = 41.25 Ah
*Further noise and propeller testing to achieve optimal configuration for mission needs
47 Overview Systems
Engineering Project
Management Power/Prop Summary
Power Overview
48 Overview Systems
Engineering Project
Management Power/Prop Summary
Power Constraints Design Constraints: 1. Flight Battery Pack (90 minutes or 90 km)
Propulsion Power Needs => ~1014 Wh (45.68 Ah) Embedded System Needs => ~220 Wh
2. Payload Battery Pack (90 minutes or 90 km) Payload System Needs => ~42 Wh (peak voltage of 9 V)
3. Backup Battery Pack required for failover and support immediate landing
4. State of health (SOH) sensors; Temp, state of charge (SOC), & voltage per battery
5. Voltage regulation for components
49
Voltage Requirements
Motor – 22 V Rx Hardware – 5 V Tx Hardware/Amp – 12 V
Backup GPS – 5 V Primary GPS – 3.6 V Autopilot – less than 7 V
CPU – 5 V IR camera – 5 V Vis Camera – 9 V
LVDS to HD-SDI converter – 6 to 9 V
Rx for Snoopy – 2.7 to 5.5 V
Overview Systems
Engineering Project
Management Power/Prop Summary
Power Source(s)
50
1. Flight Battery Pack Desire Power 35C 8300mAh 6s 22.2V Li-Po Battery 1234 Wh needed => 7 batteries (~4% margin)
2. Payload Battery Pack Desire Power 35C 3300mAh 3s 11.1V Li-Po Battery 23.4 Wh needed => 1 battery (~36% margin)
3. Backup Battery Pack E-Flite 30C 2600mAh 6s 22.2V Li-Po Battery Provides ~57.7 Wh => ~10 min of 30% throttle for landing
Overview Systems
Engineering Project
Management Power/Prop Summary
Power Monitoring
51
Still to be analyzed: 1. Identify sensors to measure voltage, current, and temperature and
provide raw data to Beagle Bone for transmission in telemetry. Current data to be processed to calculate remaining state of charge (SOC)
2. Issues
Not commercially available Current off-the-shelf products trigger LED or audio alert only (no raw
data) May need build from scratch or reverse engineer
Overview Systems
Engineering Project
Management Power/Prop Summary
Power Distribution
Overview Systems
Engineering Power/Prop
Testing and Verification
Project Management
52
53
Power Distribution 9V
5V
22V
Current Sensor
Autopilot
9V BEC
5V BEC
Overview Systems
Engineering Project
Management Power/Prop Summary
54
Power Distribution Components required: 1. Current/Voltage Sensor
The AutoPilot Current and Voltage sensor board was recommended for replacing the Pixhawk power module.
Must be able to handle a 6S LiPo battery pack
2. 5V BEC/Voltage Regulator Powers the CPU, autopilot, IR camera, and backup GPS Must be able to output enough current to power servos
(powered by the autopilot).
3. 9v BEC/Voltage Regulator Powers the transmitter, visual camera, and the LVDS to HD-SCI
converter.
Overview Systems
Engineering Project
Management Power/Prop Summary
Power Conclusion 1. Two independent primary battery packs;
Flight systems – 7 6S 8300 mAh LiPos Payload – 1 3S 3300 mAh LiPo
2. One backup battery pack Emergency landings only 1 6S 2600 mAh LiPo
3. Regulated voltage using 9V and 5V BECs Two 9V BECs Two 5V BECs
4. Battery SOC and health monitoring Still being worked
55 Overview Systems
Engineering Project
Management Power/Prop Summary
Subsystems Embedded Systems (ES)/Control/Communications
On-Board Sensors
Sensor Network
Power/Propulsion
Fuselage
Wings/Tail/Empennage
Testing & Integration
56 Overview Systems
Engineering Project
Management Subsystems Summary
Fuselage Design Requirements
Fuselage design shall:
o have the low possible drag characteristics[ CD < 0.035]
o be sufficiently sized to house the required payload
o be volumetrically efficient [Oval shape ideal]
o allow for sensor visibility [Nose cone = body of
revolution]
o have a durable and lightweight structure
o allow for easy modular mounting of sensors
o be easy to assemble, maintain, and manufacture
o be low cost
57 Overview Systems
Engineering Project
Management Fuselage Summary
Design Alternatives Open Propeller vs Integrated Propulsion Fuselage
Based on propulsion trade study the open propeller was selected
– specifically the pusher propeller on the aftbody of the fuselage
58
Previous Open Propeller Fuselage Examples
Overview Systems
Engineering Project
Management Fuselage Summary
Open pusher propeller configurations Low drag body (F2-49) sufficient to carry the payload
Clean aerodynamic shape to reduce noise
Propellers mounted the aftbody of the fuselage
Payload Layout
Overview Systems
Engineering Project
Management Fuselage Summary
Visual sensors in nose cone
Payload Layout
Overview Systems
Engineering Project
Management Fuselage Summary
Gimbal • Use a design load factor of 16 g’s (industry standard for
hard landings: no components allowed to yield
plastically for any less than 16 g’s)
Overview Systems
Engineering Project
Management Fuselage Summary
• Gimbal will rotate
about two axes
(pitch and roll)
• Components
manufactured
from plate
aluminium.
To Be Decided
• Landing gear Concept: Skid Landing
• Emergency parachute landing is considered
• Connection to fuselage: take the gimbal out of the
load path of the spine.
• Damping shall be introduced to the gimbal-
fuselage interface to reduce the effects of
vibration.
Overview Systems
Engineering Project
Management Fuselage Summary
Subsystems
Embedded Systems (ES)/Control/Communications
On-Board Sensors
Power/Propulsion
Fuselage
Wings/Tail/Empennage
Testing & Integration
63 Overview Systems
Engineering Project
Management Subsystems Summary
Wings
Geometry Parameters
Aspect Ratio 12.7
Wing Area 2.134 m²
Wing Span 5.2m
Wing Load 91.93 N/m²
Wing Twist -1°
Airfoil Eppler E214
Dihedral 2°
Taper Ratio 0.4
Aerodynamic Parameters
Cl 0.5
Cd 0.013
Design Parameters
Cruise Speed 65 km/h
MTOW 20kg
Stall Speed 36 km/h
Re ~ 500000
Plain Flaps
Wing Shape
Plane Flaps
Ailerons
Overview Systems
Engineering Project
Management Wings/Tail Summary
Wings
Diagrams
Lift coefficient over drag coefficient
Lift distribution
Overview Systems
Engineering Project
Management Wings/Tail Summary
Tail / Empennage
Comments: - Design based on CG 0.2 m behind the leading edge of the wing
- Distance from wing leading edge to empennage neutral point l=3m
Geometry Parameters
Aspect Ratio 5
Angel (Roof) 110°
Empennage
Span
(half Tail)
0.768 m
Airfoil HT 14
horizontal stabilizer
volume 0.72
vertical stabilizer
volume 0.06
Static margin 5.7%
Overview Systems
Engineering Project
Management Wings/Tail Summary
Manufacturing and Materials
Mold material: SICA Block M615
Wings / Empennage:
• glass and carbon fiber
• kevlar (aramid fibers) for highly stressed areas (wing tip, leading edge, flap hinge)
Budget Need Uni Stuttgart
Mold material 2.200,00$
Mold manufacturing
(very unsure yet) 3.200,00$
just the machine hour rate for best surface and less handiwork
maybe possible to halve
fiberglass, gum…. 200,00$
carbon fiber tubes for empennage 130,00$
servos not yet known
5.730,00$
Budget available Uni Stuttgart 4.000,00$ approx.
Time Plan
42h first wings ( “junk” , OK for
testing)
Final wings
40h preparing molds
24h glass/carbon fiber lining
20h internal wing structure
10h wings finishing
empennage ~ 40h
~ 180h total
Budget Plan
Overview Systems
Engineering Project
Management Wings/Tail Summary
Control System
l-Tail
r-Flap l-Flap
r-Tail
FCU
r-aileron l-aileron
: servos
FCU : Flight Control Unit
- Control System Voltage: 6V
- Slow servos for Flaps
- Digital servos
Overview Systems
Engineering Project
Management Wings/Tail Summary
Subsystems
Embedded Systems (ES)/Control/Communications
On-Board Sensors
Power/Propulsion
Fuselage
Wings/Tail/Empennage
Testing & Integration
69 Overview Systems
Engineering Project
Management Subsystems Summary
Testing & Integration (T&I)
Objectives:
• Support global manufacturing and integration of
AREND system
• Accurately test the system’s ability to satisfy
requirements throughout integration phases
Establishing T&I Plan:
1. List design hardware and software
2. Identify where components will be purchased/built
3. Define integration and logistics plan
4. Define test plan from lowest level requirements
70 Overview Systems
Engineering Project
Management T&I Summary
Hardware/Software and
Their Locations
• 32 hardware/software
items across 4 universities
and 4 countries
• Locations determined by
ITAR restrictions, expertise
location, and testing needs
71 Overview Systems
Engineering Project
Management T&I Summary
Integration and Logistics Plan Integration done at 3 levels
Complete System
Ground System Flight System
Ground
Station
Power &
Propulsion
Aircraft
Structure
Comm. Sensors
Software Embedded
Systems
Detection
Alerts
Level 1: All components
sent to South Africa for final
test and integration
Level 2: Integrate all major
subsystems (parts may need
to be sent to other countries)
Level 3: Subsystems
integrated separately at
development location
72 Overview Systems
Engineering Project
Management T&I Summary
Test Plan Development
*(12)
PDR
CDR
TRR
AT
73
http://softwareandme.wordpress.com/2009/10/20/software-development-life-cycle/sdlc_v_model/
Implementation
Overview Systems
Engineering Project
Management T&I Summary
Test Plan Development • Defined from lowest level requirements
• Encompasses 34 unit/subsystem tests and 11 integrated and
operational tests
• Test plan designed to address: 1. Why/When is test needed?
2. Who is doing test?
3. What are the test objectives?
4. What is being tested?
5. Where is test conducted?
6. How will test objectives be met?
7. What are the reporting requirements?
74 Overview Systems
Engineering Project
Management T&I Summary
Test & Integration Plan
75
Fuselage Pretoria
Tail Stuttgart
Wings Stuttgart
Payload CU
Embedded
Systems CU
Power CU
Autopilot CU
Assembled
Aircraft Pretoria
Final Test
DateMajor Deadline -30 Major Deadline -25 Major Deadline -20 Major Deadline -15 Major Deadline
Phase # 1 2 3 4
Initial
Fabrication/
Assembly
Thermodynamic
Testing
Control Surface
Testing
Structural
Strength
Testing
Parts Sent
To South
Africa
Enitre Aircraft
Assembly
Structures
Fuselage
Tail
Wings
Complete
Incomplete
Final Test
DateMajor Deadline -30 Major Deadline -25 Major Deadline -20 Major Deadline -15 Major Deadline -10 Major Deadline -5 Major Deadline -5 Major Deadline
Phase # 1 2 3 4 5 6 7
Initial
Fabrication/
Assembly
Functional TestingPower Output &
Endur Testing
Thermodynamic
Testing (If Needed)
Vibration
Testing
Communication
TestResolution Test
Parts Sent
To South
Africa
Electronics
Payload
Power
Autopilot
Final Test
DateMajor Deadline -45 Major Deadline -40 Major Deadline -35 Major Deadline -30 Major Deadline -25 Major Deadline -20 Major Deadline
Phase # 1 2 3 4 5 6
Full Integration
Testing
Foam Model
Testing
Communication/
Ground Station
Testing
RC Test Flight Autopilot TestingOperational
TestingDemo Flight
AREND Test & Integration Plan (CAO: 10 Jul 2014)
8/17/2014
8/17/2014
8/12/2014
8/17/2014
10/9/2014
9/1/2014
11/3/201410/14/2014
8/27/2014
8/27/2014
8/22/2014
8/22/2014
9/1/2014
9/1/2014
8/27/2014 8/27/20148/22/2014
Assembled
Aircraft
8/2/2014 8/7/2014
10/4/2014
9/1/2014
9/1/2014
9/1/2014
9/1/2014
8/7/2014
8/7/2014
8/17/2014
9/29/20149/19/2014
8/2/2014
8/2/2014
8/12/2014
8/12/2014 8/17/2014
8/17/20148/12/2014
8/12/2014
8/2/2014
Embedded
Systems
8/2/2014
8/2/2014
8/2/2014
Overview Systems
Engineering Project
Management T&I Summary
Example Test & Integration Plan
76 Overview Systems
Engineering Project
Management T&I Summary
Final Test
DateMajor Deadline -30 Major Deadline -25 Major Deadline -20 Major Deadline -15 Major Deadline
Phase # 1 2 3 4
Initial
Fabrication/
Assembly
Thermodynamic
Testing
Control Surface
Testing
Structural
Strength
Testing
Parts Sent
To South
Africa
Enitre Aircraft
Assembly
Structures
Fuselage
Tail
Wings
Complete
Incomplete
Final Test
DateMajor Deadline -30 Major Deadline -25 Major Deadline -20 Major Deadline -15 Major Deadline -10 Major Deadline -5 Major Deadline -5 Major Deadline
Phase # 1 2 3 4 5 6 7
Initial
Fabrication/
Assembly
Functional TestingPower Output &
Endur Testing
Thermodynamic
Testing (If Needed)
Vibration
Testing
Communication
TestResolution Test
Parts Sent
To South
Africa
Electronics
Payload
Power
Autopilot
Final Test
DateMajor Deadline -45 Major Deadline -40 Major Deadline -35 Major Deadline -30 Major Deadline -25 Major Deadline -20 Major Deadline
Phase # 1 2 3 4 5 6
Full Integration
Testing
Foam Model
Testing
Communication/
Ground Station
Testing
RC Test Flight Autopilot TestingOperational
TestingDemo Flight
AREND Test & Integration Plan (CAO: 10 Jul 2014)
8/17/2014
8/17/2014
8/12/2014
8/17/2014
10/9/2014
9/1/2014
11/3/201410/14/2014
8/27/2014
8/27/2014
8/22/2014
8/22/2014
9/1/2014
9/1/2014
8/27/2014 8/27/20148/22/2014
Assembled
Aircraft
8/2/2014 8/7/2014
10/4/2014
9/1/2014
9/1/2014
9/1/2014
9/1/2014
8/7/2014
8/7/2014
8/17/2014
9/29/20149/19/2014
8/2/2014
8/2/2014
8/12/2014
8/12/2014 8/17/2014
8/17/20148/12/2014
8/12/2014
8/2/2014
Embedded
Systems
8/2/2014
8/2/2014
8/2/2014
Test & Integration Plan
77
Fuselage Pretoria
Tail Stuttgart
Wings Stuttgart
Payload CU
Embedded
Systems CU
Power CU
Autopilot CU
Assembled
Aircraft Pretoria
Assembled Aircraft Test List Phase Test ID Objective
1
1_AC_1 Aircraft fuselage, tail, wings, payload, embedded systems, power & power plant,
autopilot integration configuration check
1_AC_2 Flight Control Calibration and Testing - ensure flight control freedom of movement
and proper/expected deflections in response to control inputs
1_AC_3 Vibration Testing - Static engine run to Max/Cruise RPM to determine effect of
vibrations on equipment
1_AC_4 Aerodynamic Testing - verify C.G. location to determine longitudinal stability
1_AC_5 Thermo testing of integrated components
Overview Systems
Engineering Project
Management T&I Summary
Test & Integration Plan
78
Final Test
Date Major Deadline -30 Major Deadline -25 Major Deadline -20 Major Deadline -15 Major Deadline -10 Major Deadline -5 Major Deadline Major Deadline +15
Phase # 1 2 3 4 5 6 7
Initial
Fabrication/
Assembly
Functional Testing Aerodynamic
Testing
Thermodynamic
Testing
Control Surface
Testing
Structural
Strength
Testing
Parts Sent
To South
Africa
Structure
Assembly
Entire Aircraft
Assembly
8/2/2014
8/17/2014
8/27/2014
9/1/2014
9/16/2014
8/2/2014
8/22/2014
8/27/2014
9/1/2014
9/16/2014
8/2/2014
8/22/2014
8/27/2014
9/1/2014
Final Test
Date Major Deadline -30 Major Deadline -25 Major Deadline -20 Major Deadline -15 Major Deadline -10 Major Deadline -5 Major Deadline -5 Major Deadline
Phase # 1 2 3 4 5 6 7 8
Initial
Fabrication/
Assembly
Functional Testing Power Output &
Endur Testing
Thermodynamic
Testing (If Needed)
Vibration
Testing
Communication
Test
Resolution Test
Parts Sent
To South
Africa
Electronics
Assembly
8/2/2014
8/12/2014
8/17/2014
8/22/2014
8/27/2014
8/27/2014
9/1/2014
8/2/2014
8/7/2014
8/12/2014
8/17/2014
8/22/2014
8/27/2014
9/1/2014
8/2/2014
8/12/2014
8/17/2014
8/22/2014
9/1/2014
8/2/2014
8/7/2014
8/17/2014
8/22/2014
8/27/2014
9/1/2014
Final Test
Date Major Deadline -45 Major Deadline -40 Major Deadline -35 Major Deadline -30 Major Deadline -25 Major Deadline -20
Major Deadline
Phase # 1 2 3 4 5 6
Full Integration
Testing
Foam Model
Testing
Communication/
Ground Station
Testing
RC Test Flight Autopilot Testing Operational Testing
Demo Flight
9/19/2014
9/29/2014
10/4/2014
10/9/2014
10/14/2014
11/3/2014
Fuselage Pretoria
Tail Stuttgart
Wings Stuttgart
Payload CU
Embedded
Systems CU
Power CU
Autopilot CU
Assembled Aircraft Test List Phase Test ID Objective
1
1_AC_1 Aircraft fuselage, tail, wings, payload, embedded systems, power & power plant,
autopilot integration configuration check
1_AC_2 Flight Control Calibration and Testing - ensure flight control freedom of movement
and proper/expected deflections in response to control inputs
1_AC_3 Vibration Testing - Static engine run to Max/Cruise RPM to determine effect of
vibrations on equipment
1_AC_4 Aerodynamic Testing - verify C.G. location to determine longitudinal stability
1_AC_5 Thermo testing of integrated components
Overview Systems
Engineering Project
Management T&I Summary
Final Test
DateMajor Deadline -30 Major Deadline -25 Major Deadline -20 Major Deadline -15 Major Deadline
Phase # 1 2 3 4
Initial
Fabrication/
Assembly
Thermodynamic
Testing
Control Surface
Testing
Structural
Strength
Testing
Parts Sent
To South
Africa
Enitre Aircraft
Assembly
Structures
Fuselage
Tail
Wings
Complete
Incomplete
Final Test
DateMajor Deadline -30 Major Deadline -25 Major Deadline -20 Major Deadline -15 Major Deadline -10 Major Deadline -5 Major Deadline -5 Major Deadline
Phase # 1 2 3 4 5 6 7
Initial
Fabrication/
Assembly
Functional TestingPower Output &
Endur Testing
Thermodynamic
Testing (If Needed)
Vibration
Testing
Communication
TestResolution Test
Parts Sent
To South
Africa
Electronics
Payload
Power
Autopilot
Final Test
DateMajor Deadline -45 Major Deadline -40 Major Deadline -35 Major Deadline -30 Major Deadline -25 Major Deadline -20 Major Deadline
Phase # 1 2 3 4 5 6
Full Integration
Testing
Foam Model
Testing
Communication/
Ground Station
Testing
RC Test Flight Autopilot TestingOperational
TestingDemo Flight
AREND Test & Integration Plan (CAO: 10 Jul 2014)
8/17/2014
8/17/2014
8/12/2014
8/17/2014
10/9/2014
9/1/2014
11/3/201410/14/2014
8/27/2014
8/27/2014
8/22/2014
8/22/2014
9/1/2014
9/1/2014
8/27/2014 8/27/20148/22/2014
Assembled
Aircraft
8/2/2014 8/7/2014
10/4/2014
9/1/2014
9/1/2014
9/1/2014
9/1/2014
8/7/2014
8/7/2014
8/17/2014
9/29/20149/19/2014
8/2/2014
8/2/2014
8/12/2014
8/12/2014 8/17/2014
8/17/20148/12/2014
8/12/2014
8/2/2014
Embedded
Systems
8/2/2014
8/2/2014
8/2/2014
Test & Integration Plan
79
Fuselage Pretoria
Tail Stuttgart
Wings Stuttgart
Payload CU
Embedded
Systems CU
Power CU
Autopilot CU
Assembled
Aircraft Pretoria
Unit Testing
Integration Testing Operational Testing
Overview Systems
Engineering Project
Management T&I Summary
Testing & Integration Conclusion
1. List design hardware and software
2. Identify where components will be
purchased/built
3. Define integration and logistics plan
4. Define test plan from lowest level
requirements
80 Overview Systems
Engineering Project
Management T&I Summary
Agenda
1. Introduction
2. Background & Conops
3. Systems Engineering
4. Project Management
5. Subsystems o Aaron/Chris (Embedded Systems/Control/Communication)
o Aaron (On-board Sensors)
o Andrew (Power/Propulsion)
o Lelanie (Fuselage)
o Johannes (Wings/tail/empennage)
o Matt (Testing & Integration)
4. Request for Actions: All
81 Overview
Systems Engineering
Project Management
Subsystems Summary
Next Steps
•Project definition
•Requirements
•Architectures
•Trade studies
Completed
•PDR
•Feasibility Studies
•Technology Selection
•CDR
Current •Manufacture
•Testing/Integration
•Final Design Report
Future
82 Overview Systems
Engineering Project
Management Subsystems Summary
AREND is unique in several respects:
• UAS designed around sensors/mission objectives
• Implementation of input directly from anti-poaching
rangers
• Payload modularity for defined operations
• International collaboration providing students with
experience in global design and manufacturing
environment
83 Overview Systems
Engineering Project
Management Subsystems Summary