WARBIRDS HAVE "DEATH WOBBLE" TOO
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WARBIRDS HAVE "DEATH WOBBLE" TOO
The tricycle landing gear of Warbird Aircraft, Civilian, too have a "shimmy damper' installed to dampen the nose wheel should it decide to shimmy. The shimmy damper is that cylinder shaped object mounted on the nose gear just above the wheel.
Certain Helicopters, especially the H-19, were susceptible to "ground resonance" if not brought under control would end up shaking the helicopter to self destruction. The H-19, had a 4 wheel landing gear and if conditions were just right and the aircraft touched down on one wheel first, it would bounce back and forth from wheel to wheel with increasing frequency until the helicopter fell apart.
Certain Helicopters, especially the H-19, were susceptible to "ground resonance" if not brought under control would end up shaking the helicopter to self destruction. The H-19, had a 4 wheel landing gear and if conditions were just right and the aircraft touched down on one wheel first, it would bounce back and forth from wheel to wheel with increasing frequency until the helicopter fell apart.
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Re: WARBIRDS HAVE "DEATH WOBBLE" TOO
Nose wheel wobble is an evil, insidious thing. It appears out of no where and once it starts, slowing down does not make it go away. It usually gets worse.
Full stall landings, touch down at the slowest possible speed or wheel landings, touching down on the mains first and hold the nose off until speed dissipates are two ways to help the problem from surfacing. Either way, the aircraft is at it's slowest speed before the nose wheel touches the runway surface. You could land on grass. That helps dampen the wobble.
Holding back pressure on the elevator sometimes helps. Sometimes ! Keeps weight off the nose wheel long as possible. May not be possible in a strong cross wind.
If sever wobble occurs, a check of the rudder and control cables is also advised. All the time the wheel is wobbling and the rudder pedals are dancing back and forth, it is jerking on the rudder cables and rudder itself.
Cause ?
Tire under inflation.
Balance problem
Tire belt damage from a previous hard landing.
Slop in the steering control linkage.
High taxi speed and pilot technic.
Full stall landings, touch down at the slowest possible speed or wheel landings, touching down on the mains first and hold the nose off until speed dissipates are two ways to help the problem from surfacing. Either way, the aircraft is at it's slowest speed before the nose wheel touches the runway surface. You could land on grass. That helps dampen the wobble.
Holding back pressure on the elevator sometimes helps. Sometimes ! Keeps weight off the nose wheel long as possible. May not be possible in a strong cross wind.
If sever wobble occurs, a check of the rudder and control cables is also advised. All the time the wheel is wobbling and the rudder pedals are dancing back and forth, it is jerking on the rudder cables and rudder itself.
Cause ?
Tire under inflation.
Balance problem
Tire belt damage from a previous hard landing.
Slop in the steering control linkage.
High taxi speed and pilot technic.
Mike Wolford
CJ-2A
VEP GPW
Comm./Inst. SEL
AOPA ( 50 yrs)
EAA ( 49 yrs)
4th Inf. Div. - 5th Inf. Div. - 2nd Armor Div. - CIB
CJ-2A
VEP GPW
Comm./Inst. SEL
AOPA ( 50 yrs)
EAA ( 49 yrs)
4th Inf. Div. - 5th Inf. Div. - 2nd Armor Div. - CIB
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Re: WARBIRDS HAVE "DEATH WOBBLE" TOO
I witnessed a Douglas B-26 experience that a number of years ago. It was grounded for a few days until parts came in.
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Re: WARBIRDS HAVE "DEATH WOBBLE" TOO
I witnessed a Douglas A-26 go thru that event a number of years ago, it was grounded a few days while waiting for parts.
2011 MVPA PIONEER AWARD - MVPA #1064
HONOR GRAD-WHEELED VEHICLE MECHANIC SCHOOL 1960 - US ARMY ORDNANCE SCHOOL(MACHINIST) ABERDEEN PG 1962 - O-1 BIRD DOG CREWCHIEF - 300,000+TROUBLE FREE M-38A1 MILES
LIFE MEMBER AM LEGION-40/8-DAV
7 MIL SPEC MAINTAINED MV'S
COL. BRUNO BROOKS (ARMY MOTORS) IS MY HERO
HONOR GRAD-WHEELED VEHICLE MECHANIC SCHOOL 1960 - US ARMY ORDNANCE SCHOOL(MACHINIST) ABERDEEN PG 1962 - O-1 BIRD DOG CREWCHIEF - 300,000+TROUBLE FREE M-38A1 MILES
LIFE MEMBER AM LEGION-40/8-DAV
7 MIL SPEC MAINTAINED MV'S
COL. BRUNO BROOKS (ARMY MOTORS) IS MY HERO
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Re: WARBIRDS HAVE "DEATH WOBBLE" TOO
I witnessed a Douglas A-26 go thru that event a number of years ago, it was grounded a few days while waiting for parts.
2011 MVPA PIONEER AWARD - MVPA #1064
HONOR GRAD-WHEELED VEHICLE MECHANIC SCHOOL 1960 - US ARMY ORDNANCE SCHOOL(MACHINIST) ABERDEEN PG 1962 - O-1 BIRD DOG CREWCHIEF - 300,000+TROUBLE FREE M-38A1 MILES
LIFE MEMBER AM LEGION-40/8-DAV
7 MIL SPEC MAINTAINED MV'S
COL. BRUNO BROOKS (ARMY MOTORS) IS MY HERO
HONOR GRAD-WHEELED VEHICLE MECHANIC SCHOOL 1960 - US ARMY ORDNANCE SCHOOL(MACHINIST) ABERDEEN PG 1962 - O-1 BIRD DOG CREWCHIEF - 300,000+TROUBLE FREE M-38A1 MILES
LIFE MEMBER AM LEGION-40/8-DAV
7 MIL SPEC MAINTAINED MV'S
COL. BRUNO BROOKS (ARMY MOTORS) IS MY HERO
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Re: WARBIRDS HAVE "DEATH WOBBLE" TOO
I witnessed a Douglas A-26 go thru that event a number of years ago, it was grounded a few days while waiting for parts.
2011 MVPA PIONEER AWARD - MVPA #1064
HONOR GRAD-WHEELED VEHICLE MECHANIC SCHOOL 1960 - US ARMY ORDNANCE SCHOOL(MACHINIST) ABERDEEN PG 1962 - O-1 BIRD DOG CREWCHIEF - 300,000+TROUBLE FREE M-38A1 MILES
LIFE MEMBER AM LEGION-40/8-DAV
7 MIL SPEC MAINTAINED MV'S
COL. BRUNO BROOKS (ARMY MOTORS) IS MY HERO
HONOR GRAD-WHEELED VEHICLE MECHANIC SCHOOL 1960 - US ARMY ORDNANCE SCHOOL(MACHINIST) ABERDEEN PG 1962 - O-1 BIRD DOG CREWCHIEF - 300,000+TROUBLE FREE M-38A1 MILES
LIFE MEMBER AM LEGION-40/8-DAV
7 MIL SPEC MAINTAINED MV'S
COL. BRUNO BROOKS (ARMY MOTORS) IS MY HERO
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Re: WARBIRDS HAVE "DEATH WOBBLE" TOO
Looks like your pc is having some death wobble.
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Re: WARBIRDS HAVE "DEATH WOBBLE" TOO
I did not realize that. The computer lock on this post but I was not aware of the outcome. A-26 was Canadian and belonged to Irving Wood Lands.
2011 MVPA PIONEER AWARD - MVPA #1064
HONOR GRAD-WHEELED VEHICLE MECHANIC SCHOOL 1960 - US ARMY ORDNANCE SCHOOL(MACHINIST) ABERDEEN PG 1962 - O-1 BIRD DOG CREWCHIEF - 300,000+TROUBLE FREE M-38A1 MILES
LIFE MEMBER AM LEGION-40/8-DAV
7 MIL SPEC MAINTAINED MV'S
COL. BRUNO BROOKS (ARMY MOTORS) IS MY HERO
HONOR GRAD-WHEELED VEHICLE MECHANIC SCHOOL 1960 - US ARMY ORDNANCE SCHOOL(MACHINIST) ABERDEEN PG 1962 - O-1 BIRD DOG CREWCHIEF - 300,000+TROUBLE FREE M-38A1 MILES
LIFE MEMBER AM LEGION-40/8-DAV
7 MIL SPEC MAINTAINED MV'S
COL. BRUNO BROOKS (ARMY MOTORS) IS MY HERO
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Re: WARBIRDS HAVE "DEATH WOBBLE" TOO
I thought you were developing a stutter. Glad it was your computer !
Mike Wolford
CJ-2A
VEP GPW
Comm./Inst. SEL
AOPA ( 50 yrs)
EAA ( 49 yrs)
4th Inf. Div. - 5th Inf. Div. - 2nd Armor Div. - CIB
CJ-2A
VEP GPW
Comm./Inst. SEL
AOPA ( 50 yrs)
EAA ( 49 yrs)
4th Inf. Div. - 5th Inf. Div. - 2nd Armor Div. - CIB
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- Jeep Heaven
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Re: WARBIRDS HAVE "DEATH WOBBLE" TOO
Mmmmm me t-t-too!
2011 MVPA PIONEER AWARD - MVPA #1064
HONOR GRAD-WHEELED VEHICLE MECHANIC SCHOOL 1960 - US ARMY ORDNANCE SCHOOL(MACHINIST) ABERDEEN PG 1962 - O-1 BIRD DOG CREWCHIEF - 300,000+TROUBLE FREE M-38A1 MILES
LIFE MEMBER AM LEGION-40/8-DAV
7 MIL SPEC MAINTAINED MV'S
COL. BRUNO BROOKS (ARMY MOTORS) IS MY HERO
HONOR GRAD-WHEELED VEHICLE MECHANIC SCHOOL 1960 - US ARMY ORDNANCE SCHOOL(MACHINIST) ABERDEEN PG 1962 - O-1 BIRD DOG CREWCHIEF - 300,000+TROUBLE FREE M-38A1 MILES
LIFE MEMBER AM LEGION-40/8-DAV
7 MIL SPEC MAINTAINED MV'S
COL. BRUNO BROOKS (ARMY MOTORS) IS MY HERO
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