LamaLo Technology Inc.
Other
Projects
CCGS Gordon Reid –
SAR Cutter (2 x 1832 kW): The CCGS Gordon Reid was delivered in 1990
by Versatile Pacific, in
The vessel was grounded. The propeller blades were broken, and the
propeller shaft and rudder stock were bent.
A visual inspection of the strut and sterntube bearings indicated no damages. The shaft was not excessively bent and the
shipyard straightened the shaft within tolerance. Welding repair was required on the top of the
strut frames, which were found to be cracked.
A propulsion shaftline alignment theoretical analysis and measurement
program was conducted. The alignment
condition was measured using optical, jack-up load, and strain gauge alignment
techniques. The port and starboard strut
bearings were found to be misaligned such that the aft ends of the bearings
were higher than the forward ends and they were horizontally skewed. This misalignment was consistent with the
damage observed to the shafting and propeller, and would have resulted in
damage to the bearings if operated under this condition. To correct for this misalignment the port and
starboard strut bearings were replaced with new bearings and realigned to be
concentric, parallel and in line with the gearbox output shaft.
With the vessel afloat, the shaft was
realigned by adjustment to the lineshaft bearing. The subsequent alignment measurements showed
acceptable loads on the gear shaft bearings.
The CCGS Gordon Reid underwent sea trial the in April 2004. It has been reported that no significant
shaft vibrations were present and all bearing temperatures were acceptable.
MV Oscar Dyson – NOAA Fisheries Research Vessel (1 x 2300 kW): National
Oceanic and Atmospheric Administration (NOAA) 40-Day endurance fisheries
research vessels (FRV40-1) are under construction at VTHalter Marine
The vessels have a single screw propeller configuration. The 5 bladed fixed pitch propeller is driven
by two tandem DC Motors, each rated at 1150 kW at 134 RPM. The propulsion shaftline length is about 49'
long, and is supported by one sterntube bearing, one intermediate shaft
bearing, and one support bearing on the thrust shaft. Each of the two motor rotor shafts is
supported by two bearings.
LamaLo Technology was contracted to conduct
a theoretical propulsion shaftline alignment and vibration analysis, provide
the propulsion shaftline installation and alignment procedures, and to measure
and assess the shaft torsional and lateral vibrations during sea trials. The strain gauge technique was used to
conduct the final alignment prior to chocking.
The 1st of 4 vessels is to be delivered in 2004.
CAPS
Motors and Test Motor
Physical Torque Calibration Vibration Measurements
Center for Advanced Power Systems (CAPS)
Test Bed (2 x 2500 kW): The Center
for Advance Power Systems (CAPS) Test Bed Facilities has been developed to
conduct applied research on marine propulsion motors. It consists of two tandem 2.5 MW AC Electric
motors driving a test motor. The AC
motors are used to replicate propeller loads on the test motor. LamaLo Technology Inc. (LLT) was contracted
for the following:
·
Install and test the torque measurement system
·
Provided expertise on the physical calibration design and execution
·
Conduct the theoretical shaft alignment and vibration analysis
·
Measure and assess the shaft whirling vibrations and static alignment
condition (strain gauge technique)
A static physical calibration was
conducted on the torque strain gauges.
Torque was applied by two hydraulic rams pressing against two opposite
arms mounted on the flange of the shaft, providing a pure torque load. A static torque was applied to the shaft of
up to 303,000 ft-lb. Both a clockwise
and counter-clockwise torque was applied.
The error in the value of the torque calibration factors was calculated
to be less than 1% of full scale. The
linear regression coefficient (R2) was better than 0.9994 for all the tests
performed.
A
full power test was conducted in 2004 on the Test motor. The shaft vibrations and alignment condition
were acceptable.
For
more information see http://www.caps.fsu.edu
M/Y “Christina O” – Pleasure Yacht (2 x 2079 kW): This vessel is a legacy to the late
shipping magnate Aristotle Onassis. The vessel is named after Onassis'
daughter. An upgrade to the propulsion
system was conducted in 2000. LamaLo
Technology was contracted to conduct a theoretical propulsion shaftline
alignment analysis, and to provide the propulsion shaftline installation and
alignment procedures. A
brief assessment of the potential for excessive shaft vibration was also
conducted. The vessel refit was
conducted in Croatia in October 2000.
Marine Propulsion System Projects
(Partial List: 1989-1998)
(Participation/Managed by Mr. Bruce
Cowper)
|
Vessel Name |
Type |
Client |
Work |
Date |
|
Pleasure Craft |
Speed Boat |
LIPS USA |
Torsional Coupling Design and Testing |
September-98 |
|
Chevron Tanker "Ishibras" |
Tanker |
LIPS USA |
Shaft Torsional Vibration Analysis |
June-98 |
|
Pesquera Azteca |
Tuna Boat |
LIPS USA |
Torsional Coupling and Clutch Design |
June-98 |
|
TRICO SWATH |
SWATH |
LIPS USA |
Alignment and Lateral Vibration Analysis |
March-98 |
|
CCGS Louis S. St. Laurent |
Icebreaker |
Canadian Coast Guard |
Alignment Analysis and Measurement |
May-98 |
|
Queen of New Westminster |
B.C. Ferry |
BC Ferry Services Inc. |
Propulsion Shaft Alignment Review - Expert Testimony |
May-97 |
|
HMCS Huron |
Naval Destroyer |
Canadian Navy |
Alignment Measurement and Re-Alignment (Aux. Gearbox) |
March-97 |
|
USCGC Juniper |
USCG Icebreaker |
STC Corp. |
Vibration Analysis & Measurements |
September-96 |
|
CCGS Earl Grey |
CCG Buoy Tender |
Canadian Coast Guard |
Alignment Analysis and Measurement |
February-96 |
|
USCGC WAGB 20 "Healy" |
USCG Icebreaker |
Westinghouse |
Propeller-Ice Forces and Propulsion Design Considerations |
August-95 |
|
USCGC Polar Star |
USCG Icebreaker |
Transport Canada |
Vibration Analysis & Measurements |
October-94 |
|
MV Kalvik |
OSV-Icebreaker |
Transport Canada |
Vibration Analysis and Alignment Measurements (1986) |
October-94 |
|
MV Robert Lemeur |
OSV-Icebreaker |
Transport Canada |
Vibration Analysis |
October-94 |
|
MV Ikaluk |
OSV-Icebreaker |
Transport Canada |
Vibration Analysis |
October-94 |
|
MV Gudingen |
Offshore Supply |
Transport Canada |
Vibration Analysis |
October-94 |
|
HMCS Fredericton |
Naval Patrol Frigate |
Canadian Navy |
Vibration and Alignment Analysis and Measurement |
July-94 |
|
TS Patriot State |
Research Vessel |
PJ Schwalbenberg |
Alignment Analysis |
December-93 |
|
RV Nathaniel B. Palmer |
Icebreaker/Research |
Transport Canada |
Vibration Analysis & Measurements |
August-93 |
|
CCGS Louis S. St. Laurent |
Icebreaker |
GMI |
Alignment and Vibration Analysis |
April-93 |
|
WLB Seagoing Buoy Tender |
Buoy Tender |
Wartsila Marine Inc. |
Alignment and Vibration Analysis |
January-92 |
|
Queen of New Westminster |
Ferry |
BC Ferry Corporation |
Alignment and Vibration Analysis |
May-91 |
|
CCGS Wilfrid Laurier |
Buoy Tender |
German and Milne |
Alignment and Vibration Analysis |
August-90 |
|
MV Ikaluk |
OSV-Icebreaker |
Transport Canada |
Measurement and Vibration Analysis |
May-90 |
|
CCGS Wilfrid Laurier |
Buoy Tender- Light Icebreaker |
Canadian Coast Guard |
Propeller Induced Vibration Measurement and Analysis |
February-90 |
|
Type 500 SAR Vessel |
SAR |
Versatile Shipyards |
Alignment Analysis |
July-89 |
|
Hydrographic Survey Vessel |
Research |
Versatile Shipyards |
Alignment and Vibration Analysis |
July-89 |
|
CCG Polar 8 |
Icebreaker |
Polar Icebreaker Cons. |
Alignment and Vibration Analysis |
February-89 |