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Kyle Ball
Matthew Douglas
William Charlock
Single Line Tethered Glider
Jon Erbelding
Paul Grossi
Sajid Subhani
9/9/2013 Problem Definition Presentation P14462
• Team introduction
• Problem definition
• Private and academic development
• Customer needs
• Engineering requirements
• Timeline moving forward
Agenda
9/9/2013 Problem Definition Presentation P14462
Team Introduction
Team Member Role
Sajid Subhani Industrial Eng / Team Lead
Kyle Ball Mech Eng
Matthew Douglas Mech Eng
William Charlock Mech Eng
Jon Erbelding Mech Eng
Paul Grossi Mech Eng
MSD Staff Role
Ed Hanzlik Team Guide
Art North Team Guide
Mario Gomes Customer
9/9/2013 Problem Definition Presentation P14462
• Goal: Design, build, and test a tethered, small-scale, human-controlled glider.
• Critical project objectives
• Maintain maximum tension on the tether
• Sustaining horizontal and vertical flight paths
• Measure/record tether tension & position
• Understand the influential parameters for sustained, tethered, unpowered flight
Problem Definition
Base
Station
Glider
Tether
Operator w/
controller
9/9/2013 Problem Definition Presentation P14462
• Ampyx Power
• Tethered Glider
• Ground power generation
• Figure-8 pattern
• Capable of generating 850kW
Private Development
9/9/2013 Problem Definition Presentation P14462
• Makani Power
• Tethered Glider
• Airborne wind turbines
• Circular pattern
• Tested 30kW; Goal of 600kW
Private Development
9/9/2013 Problem Definition Presentation P14462
• Loyd
• 1980 Paper outlining how to harness high altitude wind energy
• 3 Different Methods
• Simple Kite
• Crosswind Powered Kite
• Drag Powered Kite
• Uses turbines on kite rather than a ground based generator
Academic Papers
9/9/2013 Problem Definition Presentation P14462
Academic Papers
Three axis load cell system created by Lansdorp et al.Image taken
from [Lansdorp 2007].
Lansdorp
• Two Different Arrays of Kites
• Pumping Mill
• Laddermill
• Created a system to measure the tension magnitude and direction using 3D load cell assembly
• Basis for our system
9/9/2013 Problem Definition Presentation P14462
Donnelly
• Fighter Kites
• Theoretical model to predict motion of fighter kite
• Created a method to control the fighter kite motion
• Created an experimental rig with generator and variable tether length similar to Lansdorp’s.
Academic Papers
Three axis load cell allowing for variable tether length
created by Chris Donnelley. Image taken from [Donnelly
2013].
9/9/2013 Problem Definition Presentation P14462
Customer Needs CN # Importance Description
CN1 1 Tethered glider system (with electric prop assist for launching) that demonstrates at least 3 minutes of continuous circular flight path with taunt tether.
CN2 1 Human controlled plane
CN3 1 No special flight skills required
CN4 2 Laptop not required for data collection
CN5 1 Tether tension is measured and recorded during flights
CN6 1 Tether direction is measured and recorded during flights
CN7 1 Videos with accompanying data files of all flight tests
CN8 1 Robust plane design
CN9 1 Maximize tether tension
CN10 2 Vertical and horizontal flight
CN11 1 Obtain data that can be compared to Matlab simulation
CN12 2 Reasonable plane size
9/9/2013 Problem Definition Presentation P14462
Engineering Requirements Metric No. Metric Marginal Value Ideal Value Units
1 Wingspan <=1.5 <1 m
2 Weight <=6 <=4 lbs
3 System Cost <500 $
4 Length of Looping Flight >2 >=3 min
5 Resolution of Tension Data <=0.1 <=0.01 N
6 Resolution of Angular Position Data <=0.5 <=0.1 deg
7 Typical Repair Time 5 3 min
8 Data Sampling Rate >=100 >=500 Hz
9 Minimal Operational Wind Speed at Ground Level 10 5 mph
10 Maximum Operational Wind Speed at Ground Level 20 40 mph
11 Safe for User and Observer Yes Yes Binary
12 Number of Looping Trials Demonstrated >=25 >=30 Integer
13 Training Time (1st Time) <30 <20 min
14 Number of Left Right Horizontal Trials >=25 >=30 Integer
9/9/2013 Problem Definition Presentation P14462
House of Quality Engineering Metrics Customer Perception
Customer Requirements Cu
stom
er W
eigh
ts
Win
gsp
an
We
igh
t
Syste
m C
ost
Le
ng
th o
f L
oo
pin
g F
ligh
t
Re
so
lutio
n o
f T
en
sio
n D
ata
Re
so
lutio
n o
f A
ng
ula
r P
ositi
on
Da
ta
Typ
ica
l Re
pa
ir T
ime
Da
ta S
am
plin
g R
ate
Min
ima
l Op
era
tion
al W
ind
Sp
ee
d a
t G
rou
nd
Le
ve
l M
axim
um
Op
era
tion
al W
ind
Sp
ee
d a
t
Gro
un
d L
eve
l S
afe
fo
r U
se
r a
nd
Ob
se
rve
r
Nu
mb
er
of L
oo
pin
g T
ria
ls D
em
on
str
ate
d
Tra
inin
g T
ime
(1
st T
ime
)
Nu
mb
er
of L
eft R
igh
t H
orizo
nta
l Tria
ls
1 Tethered glider system (with electric prop assist for launching) 1 x x
2 Human controlled plane 1 x x
3 No special flight skills required 1 x
4 Laptop not required for data collection 2 x x x
5 Tether tension is measured and recorded during flights 1 x x
6 Tether direction is measured and recorded during flights 1 x x
7 Videos with accompanying data files of all flight tests (even 1 x x
8 Robust plane design 1 x x x x
9 Maximize tether tension 1 x
10 Verticle and horizontal flight 2 x x
11 Obtain data that can be compared with Matlab simulation 1 x x x
12 Reasonable plane size 2 x x x x
Technical Targets (Specifications)
<=
1.5
(m
)
<=
6 (
lbs)
<500 (
$)
>=
2 (
min
)
<=
0.1
(N
)
<=
0.5
(deg
)
5 (
min
)
>=
100 (
Hz)
10 (
mph)
20 (
mph)
Yes
(bin
ary)
>=
25 (
inte
ger
)
<30 (
min
)
>=
25 (
inte
ger
)
9/9/2013 Problem Definition Presentation P14462
• Phase 1 (wk 1-3) - COMPLETE!
• Define/understand problem definition
• Research similar projects
• Organize as a team
• Phase 2 (wk 4-6) - In progress
• Learn to fly
• Research production load cells & gliders
• Identify/understand critical engineering theory
Timeline
9/9/2013 Problem Definition Presentation P14462
• Phase 3 (wk 7-9)
• Determine glider design
• If building glider from scratch
• Identify airfoil types, materials, control/communication features
• Develop theoretical simulation of flight
• Phase 4 (wk 10-13)
• Refine glider design
• Refine theoretical simulations
• Phase 5 (wk 14-15)
• Order materials
Timeline
9/9/2013 Problem Definition Presentation P14462
Using Asana
9/9/2013 Problem Definition Presentation P14462
• Team introduction
• Problem definition
• Private and academic development
• Customer needs
• Engineering requirements
• Timeline moving forward
Summary
9/9/2013 Problem Definition Presentation P14462
• Ampyx Power. http://www.ampyxpower.com/
• Makani Power. http://www.makanipower.com/home/
• Loyd, Miles L. “Crosswind Kite Power.” Journal of Energy 4.3 (1980): 106–111.
Print.
• Lansdorp, Bas. “Comparison of Concepts for High-altitude Wind Energy
Generation with Ground Based Generator.” Proceedings of the NRE 2005
Conference,Beijing, (2005): 1–9. Web. 17 Feb. 2011.
• Donnelly, Christopher. “Dynamics and control of a single-line maneuverable
kite.” Rochester Institute of Technology. (2013).
References
9/9/2013 Problem Definition Presentation P14462
Questions?
9/9/2013 Problem Definition Presentation P14462
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