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UAV - lecture 11 – Zdobyslaw Goraj
Selection of wing section, part 2
Warsaw, 21 May, 2020
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Aerodynamic characteristics of high lift,
thick, high altitude wing sections
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TLD wing section (Transonic, Loitering, Double)
Two-elements wing sections for transonic loitering (patrolling)
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Comparison of high altitude wing sections
for Re = 1*106 (1/3)
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Comparison of high altitude wing sections
for Re = 1*106 (2/3)
Altitude factor
Transonic, Loitering, Double
High Altitude Slotted Airfoil
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Comparison of high altitude wing sections
for Re = 1*106 (3/3)
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Wing section LRT (1/5)
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Wing section LRT (2/5)
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Wing section LRT (3/5)
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Wing section LRT (4/5)
alpfa
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Wing section LRT (5/5)
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Wing section HASA (1/2) High Altitude Slotted Airfoil
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Wing section HASA (2/2) High Altitude Slotted Airfoil
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Wing section TLD – 0.65/15A (1/2)
TLD - (Transonic, Loitering, Double)
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Wing section TLD – 0.65/15A (2/2)
Margin of safe speed TLD -Transonic, Loitering, Double
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Comparison of high altitude wing section (1/2)
TLD -Transonic, Loitering, Double
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Comparison of high altitude wing section (2/2)
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Influence of the wing section upper surface
modification on turbulence free flow (1/2)
Flow turbulence free
Flow partly turbulent
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Influence of the wing section upper surface
modification on turbulence free flow (2/2)
Turbulent flow excited at the leading edge
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Influence of wing section (TLD) thickness
on aerodynamic characteristics (1/3)
TLD -Transonic, Loitering, Double
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Influence of wing section (TLD) thickness
on aerodynamic characteristics (2/3)
Lower lift Lower lift
TLD -Transonic, Loitering, Double
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Influence of wing section (TLD) thickness
on aerodynamic characteristics (3/3)
TLD -Transonic, Loitering, Double
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Influence of Mach number on aerodynamic characteristics (1/6)
TLD; Re=1*106; Ncr=12
TLD -Transonic, Loitering, Double
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Influence of Mach number on aerodynamic characteristics(2/6)
TLD; Re=1*106; Ncr=12
TLD -Transonic, Loitering, Double
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Influence of Mach number on aerodynamic characteristics(3/6)
Lift coefficient Cl as a function of max aerodynamic efficiency, versus Mach number
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Influence of Mach number on aerodynamic characteristics(4/6)
TLD; Re=1*106; Ncr=12
TLD -Transonic, Loitering, Double
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Influence of Mach number on aerodynamic characteristics(5/6)
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Influence of Mach number on aerodynamic characteristics (6/6)
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TLD with flaps deflected (1/5)
Ma=0.20; Re = 3*106
TLD -Transonic, Loitering, Double
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TLD with flaps deflected (2/5)
Ma=0.65; Re = 1*106
TLD -Transonic, Loitering, Double
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TLD with flaps deflected (3/5)
Ma=0.65; Re = 1*106
TLD -Transonic, Loitering, Double
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TLD with flaps deflected (4/5)
Ma=0.65; Re = 1*106
TLD -Transonic, Loitering, Double
Lift coefficient Cl as a function of max
aerodynamic efficiency, versus Mach number
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TLD with flaps deflected (5/5)
Re = 1.5*106
TLD -Transonic, Loitering, Double
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Flaps as a aerodynamic brake (1/3)
Dimensionless thickness ~ 21%
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Flaps as a aerodynamic brake (2/3)
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Flaps as a aerodynamic brake (1/3)
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Other subsonic wing sections: SA-14 i LA203A
Liebeck
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Comparison of wing sections: SA-14 i LA203A
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Wing sections well
selected for STOL
HT/EX – Horizontal Tail Airfoil
with Extended Range
of Control Power
Dimensionless thickness ~ 18,5%
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Wing section DSA/EX (Double Slotted Airfoil with
Extended range of control power) for STOL 3-elements wing section of increased control effectivity
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Pressure distribution on DSA/EX wing section
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Lift coefficient versus flap deflection, DSA/EX
Lotka i klapa na płacie
głównym są dwuelementowe
Ster na stateczniku jest
jednoelementowy
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Change of
CLmax
versus Re
number
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Elevator efficiency
with DSA/EX wing
section
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Landing run distance with different flap setting
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Landing run distance versus wing loading
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