<s>
QBlade	B-Language
is	O
a	O
public	O
source	O
,	O
cross-platform	O
simulation	B-Application
software	I-Application
for	O
wind	O
turbine	O
blade	O
design	O
and	O
aerodynamic	O
simulation	O
.	O
</s>
<s>
It	O
comes	O
with	O
a	O
user-friendly	O
graphical	B-Application
user	I-Application
interface	I-Application
(	O
GUI	B-Application
)	O
based	O
on	O
Qt	B-Language
.	O
</s>
<s>
QBlade	B-Language
is	O
a	O
public	O
source	O
wind	O
turbine	O
calculation	O
software	O
,	O
distributed	O
under	O
the	O
.	O
</s>
<s>
The	O
software	O
is	O
seamlessly	O
integrated	O
into	O
XFOIL	B-Application
,	O
an	O
airfoil	O
design	O
and	O
analysis	O
tool	O
.	O
</s>
<s>
The	O
integration	O
in	O
XFOIL	B-Application
allows	O
for	O
the	O
user	O
to	O
rapidly	O
design	O
custom	O
airfoils	O
and	O
compute	O
their	O
performance	O
curves	O
,	O
Extrapolating	O
the	O
performance	O
data	O
to	O
a	O
range	O
of	O
360°Angle	O
of	O
attack	O
,	O
and	O
directly	O
integrate	O
them	O
into	O
a	O
wind	O
turbine	O
rotor	O
simulation	O
.	O
</s>
<s>
The	O
graphical	B-Application
user	I-Application
interface	I-Application
,	O
including	O
a	O
custom	O
dnymaic	O
graph	O
class	O
for	O
data	O
visualizations	O
makes	O
this	O
software	O
accessible	O
to	O
a	O
large	O
potential	O
user	O
community	O
.	O
</s>
<s>
QBlade	B-Language
is	O
especially	O
adequate	O
for	O
teaching	O
,	O
as	O
it	O
provides	O
a	O
’	O
hands-on	O
’	O
feeling	O
for	O
Horizontal-axis	O
wind	O
turbine	O
(	O
HAWT	O
)	O
rotor	O
design	O
and	O
shows	O
all	O
the	O
fundamental	O
relationships	O
between	O
blade	O
twist	O
,	O
blade	O
chord	O
,	O
section	O
airfoil	O
performance	O
,	O
turbine	O
control	O
,	O
power	O
and	O
load	O
curves	O
in	O
an	O
easy	O
and	O
intuitive	O
way	O
.	O
</s>
<s>
QBlade	B-Language
also	O
includes	O
post	O
processing	O
of	O
conducted	O
rotor	O
simulations	O
and	O
gives	O
deep	O
insight	O
into	O
all	O
relevant	O
blade	O
and	O
rotor	O
variables	O
.	O
</s>
<s>
QBlade	B-Language
's	O
development	O
was	O
started	O
in	O
2009	O
at	O
the	O
Hermann	O
Föttinger	O
Institute	O
of	O
TU	O
Berlin	O
.	O
</s>
<s>
This	O
included	O
a	O
new	O
aerodynamic	O
module	O
which	O
replaced	O
the	O
BEM	O
of	O
QBlade	B-Language
with	O
a	O
new	O
advanced	O
Lifting	O
Line	O
Theory	O
(	O
LLT	O
)	O
module	O
.	O
</s>
<s>
A	O
new	O
version	O
of	O
QBlade	B-Language
was	O
released	O
in	O
August	O
2022	O
.	O
</s>
<s>
QBlade	B-Language
Community	O
Edition	O
(	O
QBlade-CE	O
2.0.4	O
)	O
includes	O
all	O
functionality	O
that	O
is	O
required	O
for	O
the	O
aero-servo-hydro-elastic	O
simulation	O
of	O
wind	O
turbines	O
.	O
</s>
<s>
For	O
the	O
structural	O
dynamics	O
modelling	O
QBlade	B-Language
integrates	O
the	O
Project	O
Chrono	O
multi-physics	O
library	O
.	O
</s>
<s>
The	O
functionality	O
of	O
QBlade	B-Language
includes	O
the	O
following	O
features	O
:	O
</s>
<s>
QBlade	B-Language
is	O
distributed	O
under	O
the	O
.	O
</s>
<s>
QBlade	B-Language
has	O
been	O
successfully	O
validated	O
against	O
the	O
WT_Perf	O
Blade	O
Element	O
Momentum	O
Theory	O
code	O
of	O
NWTC	O
.	O
</s>
