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1The Univers i ty of KansasAdaptive Aerostruc tures Laboratory
The Univers i ty of MinnesotaCollege of Biologic al Sciences
Solution Cell
Pressure Adaptive Honeycomb forAerospace Applications
By
Mr. Shawn-Paul BoikePresident, AIC
Dr. Ron Barrett, DirectorAdaptive Aerostructures LaboratoryUniversity of Kansas, Lawrence
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2The Univers i ty of KansasAdaptive Aerostruc tures Laboratory
The Univers i ty of MinnesotaCollege of Biologic al Sciences
Three Selected Applications:
I. Advanced Seating for Commercial Airliners
II. Door opening mechanisms for LO aircraft
III. High lift mechanism actuators
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3The Univers i ty of KansasAdaptive Aerostruc tures Laboratory
The Univers i ty of MinnesotaCollege of Biologic al Sciences
BackgroundUS Patent 8,366,057, issued Feb. 2013 describes the highest multi-cyclic mass-specific
energy density actuator class known to be made from FAR-25 certifiable materials
High Pressure Adaptive Honeycomb
ConventionalHydraulics
& Pneumatics
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4The Univers i ty of KansasAdaptive Aerostruc tures Laboratory
The Univers i ty of MinnesotaCollege of Biologic al Sciences
Background
As a distributed actuator, Pressure Adaptive Honeycomb (PAH) has been shown to
reduce aerospace actuator system weights by as much as 80% as it eliminates the needfor many hard points.
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5The Univers i ty of KansasAdaptive Aerostruc tures Laboratory
The Univers i ty of MinnesotaCollege of Biologic al Sciences
Aerospace Seating Applications
I.Business & First Class seats have between 2 and 14actuators of different stroke and force capability.
II.Replacement will yield aweight saving of between1 and 16lb per seat
@ $750-$1,500/lb787LCCsavings = $425-$850k
III. Honeycomb used for crashenergy absorption easilysatisfies FAR 25.562
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6The Univers i ty of KansasAdaptive Aerostruc tures Laboratory
The Univers i ty of MinnesotaCollege of Biologic al Sciences
Aerospace Seating Applications
conventionalreclination
actuators
conventional electromagneticseat elevation, tilt actuators conventional electromagnetic
jackscrew footrest actuators
PAH Actuators ~20% of theweight of electromagneticservoactuators
PAH Actuators with 10:1extension capability
ultra-low weight, compliant
headrest actuators
ultra-low weight,conformal lumbar spine
and sacral seatactuators
conventionalreclinationactuators
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8The Univers i ty of KansasAdaptive Aerostruc tures Laboratory
The Univers i ty of MinnesotaCollege of Biologic al Sciences
LO Aircraft Door Applications
Hinges, push-rods, lockingmechanisms, latches boostopen-door RCS
PAH door actuators and lockingMechanisms can be made fromRAM cellular structure,dropping open door RCS
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Th U i i t f K Th U i i t f Mi t
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10The Univers i ty of KansasAdaptive Aerostruc tures Laboratory
The Univers i ty of MinnesotaCollege of Biologic al Sciences
High Lift Mechanisms:
Conventional Actuators in new (22 year old)Conventional Adaptive Wing Concept:
Conventional actuators = heavy Not adaptively aerocompliant = minimal to adverse gust load alleviation optimization Not capable of negative section lift-curve slope generation
No advantage in V-n diagram gust peak alleviation No ride quality improvement, aeromechanics enhancement and fatigue load alleviation Load concentration drives weight, increases complexity, cost Zone 1 lightning strike untested
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Th U i i t f K Th U i i t f Mi t
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12The Univers i ty of KansasAdaptive Aerostruc tures Laboratory
The Univers i ty of MinnesotaCollege of Biologic al Sciences
High Lift Mechanisms:Pressure Adaptive Honeycomb Flap Systems:
Fully adjustable adaptive aerocompliance
Extremely lightweight, using aerospace-grade honeycomb
Distributed actuation = no hard point load concentration
Gust load alleviation, ride quality tailoring, flight safety enhancement
Th U i i t f K Th U i i t f Mi t
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13The Univers i ty of KansasAdaptive Aerostruc tures Laboratory
The Univers i ty of MinnesotaCollege of Biologic al Sciences
High Lift Mechanisms: SolutionCell PAH Wings
The Univers i ty of Kansas The Univers i ty of Minnesota
8/13/2019 SolutionCell Presentation 2-12-14a
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14The Univers i ty of KansasAdaptive Aerostruc tures Laboratory
The Univers i ty of MinnesotaCollege of Biologic al Sciences
High Lift Mechanisms: SolutionCell PAH Wings
Structure of a typical FAR-25 V-n Diagram
+1
0
-1
Load
Factor,
n(
g's)
VS1 VA VC VD
Maneuver Limits
Gust Limits
Gust Limits
Commercial Aircraft
Structural Weights areset by these points
Flight Speed, Vflt (kts)
The Univers i ty of Kansas The Univers i ty of Minnesota
8/13/2019 SolutionCell Presentation 2-12-14a
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Barrett2013allrightsreserved
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15The Univers i ty of KansasAdaptive Aerostruc tures Laboratory
The Univers i ty of MinnesotaCollege of Biologic al Sciences
High Lift Mechanisms: SolutionCell PAH Wings
+1
0
-1
Load
Factor,
n(
g's)
VS1 VA VC VDFlight Speed, Vflt (kts)
Compression of Gust Lines to within Maneuver...just like birds do, via dynamic aerocompliance
The Univers i ty of Kansas The Univers i ty of Minnesota
8/13/2019 SolutionCell Presentation 2-12-14a
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Barrett2013allrightsreserved
unclassified
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16The Univers i ty of KansasAdaptive Aerostruc tures Laboratory
The Univers i ty of MinnesotaCollege of Biologic al Sciences
High Lift Mechanisms: SolutionCell PAH Wings
Compression of Gust Lines to within Maneuver...just like birds do, via dynamic aerocompliance
+1
0
-1
Load
Factor,
n(
g's)
VS1 VA VC VDFlight Speed, Vflt (kts)
The Univers i ty of Kansas The Univers i ty of Minnesota
8/13/2019 SolutionCell Presentation 2-12-14a
17/17U l ifi d di t ib ti li it d R B tt All Ri ht R d 28 F b 2010
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Barrett2013allrightsreserved
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/EAR
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17The Univers i ty of KansasAdaptive Aerostruc tures Laboratory
The Univers i ty of MinnesotaCollege of Biologic al Sciences
High Lift Mechanisms: SolutionCell PAH Wings
Implications for commercial jets: Reduction in Structural Weight 9 - 22%
Increase in mission integrated L/Dmax 6 - 9% Reduction in DOC at constant range 7 - 11%
Increase in range at constant TOW 12 - 18%
Section gust load rejection: up to 380%
Net airframe gust load rejection up to 87%
Safe Airframe Life Extension 11 - 14%
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