& Mobility COMPOSITE RUBBER TRACK TRIAL RESULTS FOR WARRIOR IVF - - PowerPoint PPT Presentation

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& Mobility COMPOSITE RUBBER TRACK TRIAL RESULTS FOR WARRIOR IVF - - PowerPoint PPT Presentation

Jun 23, 2023 397 likes •810 views

Power & Mobility COMPOSITE RUBBER TRACK TRIAL RESULTS FOR WARRIOR IVF Tommy Marcotte Defense Engineering Director Soucy International Power & Mobility INTRODUCTION Armoured Trials and Development Unit (ATDU) conducted a private

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COMPOSITE RUBBER TRACK TRIAL RESULTS FOR WARRIOR IVF Tommy Marcotte

Defense Engineering Director Soucy International

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INTRODUCTION

  • Armoured Trials and Development Unit (ATDU) conducted a private venture

trial on behalf of Soucy Defense, sponsored by the Head of Capability – Ground Manoeuvre.

  • Trial aim: build United Kingdom Ministry of Defense (UK MoD) confidence in

Composite Rubber Track (CRT) technology by validating performance claims, in

  • rder to inform future Armoured Vehicle Programme (APV) capability decision.
  • Objective: Trial of 3107 miles (5,000 km), broken into 10 BFM of 311 miles each.
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WARRIOR IFV Variant 510 60,000 lb

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CRT TECHNOLOGY – BENEFITS ON WARRIOR WEIGHT

37% reduction in track weight Mean noise reduction of 53%

NOISE

Mean vibration reduction of 40%

VIBRATION

28% fuel savings

FUEL ECONOMY MAINTENANCE

Savings of 134 maintenance hours per 1000 miles Up to 5,000 miles

DURABILITY

With CRT technology With steel tracks

28% increased in range

RANGE

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WEIGHT REDUCTION

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WEIGHT REDUCTION

Composite Rubber Track (CRT) Kit weight saving of 3.306 LB (-5% GVW in average) When submerged in water, CRTs are 79% lighter than steel tracks

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ADTU TRIAL

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CRT INSTALLATION

  • The CRTs were removed and replaced by the crew in

both the work shop and in the field.

  • It took the untrained team 2.5 hrs to complete the

task by hand in both instances.

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10 BATTLEFIELD MISSIONS

2 Months of intensive testing (80 miles / day):

  • 28 % on track
  • 42% on road
  • 30% Cross-country
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3107 MILE TRIAL

2 Months of intensive testing (80 miles / day):

  • 28 % on track
  • 42% on road
  • 30% Cross-country
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3107 MILE TRIAL

2 Months of intensive testing (80 miles / day):

  • 28 % on track
  • 42% on road
  • 30% Cross-country
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FUEL CONSUMPTION

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VEHICLE RANGE - ROAD

50 100 150 200 250

100 200 300 400

Fuel (Gallon) Distance (miles) Distance Travelled with One Fuel Tank Road Conditions

Steel Tracks CRT

Vehicle range increase of 19%

  • n road
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VEHICLE RANGE – CROSS-COUNTRY

50 100 150 200 250 50 100 150 200 250 300 350

Fuel (Gallon) Distance (miles) Distance Travelled with One Fuel Tank Cross-country

Steel Tracks CRT

Vehicle range increase of 31% in cross country

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VEHICLE RANGE Assuming 25% road and 75% cross-country the CRT allowed the vehicle range increase from 260 mile to 332 mile (+ 28%)

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FUEL CONSUMPTION

  • 16%
  • 24%

0% 5% 10% 15% 20% 25% 30%

Road Cross-country

% Reduction over Steel Track

CRT Fuel Consumption VS Steel Track

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FUEL CONSUMPTION – “Snake Effect” Low rolling resistance = low fuel consumption, thanks to:

  • Reduction of the rubber compound hysteresis
  • Reduction of the weight and inertia
  • Reduction of the “snake effect”
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NOISE REDUCTION

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NOISE REDUCTION

90 92 94 96 98 100 102 104 106 108 110

5 10 15

dB(C) Vehicle Speed (mph)

CRT Steel

3dB(C) 9dB(C) 10dB(C) 9dB(C)

Cross-country (Hatch closed) - Crewstation

Average reduction of 7.75dB(C)

JSF2382 NPRIME Report

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NOISE REDUCTION Average reduction

  • f 53%

JSF2382 NPRIME Report 0% 10% 20% 30% 40% 50% 60% 70% 80% Roading (Open) Roading (Closed) Fast Track (Open) Fast Trak (Closed) Cross country (Open) Cross country (Closed) Overall

CRT Noise Reduction vs Steel Tracks SPL(C)

Driver Commander Crewstation

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VIBRATION REDUCTION

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VIBRATION REDUCTION Up to 75% vibration reduction at 31 mph

0.5 1 1.5 2 2.5 3 3.5

5 10 15 20 25 30 35 40 45

Vibration Level (g)

Vehicle Speed (mph)

Unweighted RMS - Rear Crew Seat Pad

Rubber Dec-17 Rubber Jan-18 Steel

  • 75%

JSF2382 NPRIME Report

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VIBRATION REDUCTION

0% 10% 20% 30% 40% 50% 60% 70% Roading (Open) Roading (Closed) Fast Track (Open) Fast Trak (Closed) Cross country (Open) Cross country (Closed) Overall

CRT Vibration Reduction vs Steel Tracks (g)

Commander Driver Gunner Rear Crew

Mean reduction

  • f 40%

JSF2382 NPRIME Report

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DURABILITY

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DURABILITY

1000 2000 3000 4000 5000

30 31 32 33 34 35 36 37 38

Predicted Durability (Miles) Gross Vehicle Weight (US Tons) Mean Etimated Track Durability vs Gross Vehicle Weight 21" Wide x 4.1" Pitch Length

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MOBILITY

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MOBILITY

20 40 60 80 100 120

Mobility Index Vehicle cone index (1) vehicle cone index (50)

Mobility Index & Vehicle Cone Index CRT TR30 Steel Track

J.Y. Wong, Theory of Ground Vehicles

Mobility improved by 24 %

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GROUND PRESSURE

* Cardinal Point Specification for the Track System for the Warrior Family of Armored Vehicles.

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MAINTENANCE

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CRT MAINTENANCE

  • CRT kit estimated mean durability of ~4000 miles:

– Throughout the 3107 mile trial there have been no CRT components changed from the original parts fitted.

  • The current Warrior estimated

steel tracks durability is 1000 miles

– 883 miles (ref. BATUS - British Army Training Unit Suffield, Canada)

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CRT MAINTENANCE

  • “Daily maintenance procedures only require a visual

inspection on running gear components.”

  • “The limited inspection saved 415 man hours for level 1

and 2 maintainers, over the 3107 miles performed.”

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ATDU FEEDBACK

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ATDU - FEEDBACK

  • “When the Driver put in a steering demand at any

speed the vehicle responded immediately.”

  • “It was apparent that the acceleration was much

quicker compared with steel tracks.”

  • “The vehicle stopped more sharply.”

ATDU/040236 – COMPOSITE RUBBER TRACK TRIAL

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ATDU - FEEDBACK

  • “There is a noticeable difference between the CRT

and the steel tracks noting that there were no physical feelings of vibration and the only noise heard is that of the engine at all speeds over varying terrains.”

ATDU/040236 – COMPOSITE RUBBER TRACK TRIAL

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ATDU - FEEDBACK

  • “There is evidence that the Noise and Vibration

produced by having CRT fitted is significantly reduced which will have a genuine effect on the health of our soldiers.”

ATDU/040236 – COMPOSITE RUBBER TRACK TRIAL

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ATDU - FEEDBACK

  • “The CRT trial has been extremely successful.”
  • “The trial achieved the aim of completing

3,107 miles on one set of tracks.”

  • “Having this track system deliver up to 5,000

miles is realistic.”

ATDU/040236 – COMPOSITE RUBBER TRACK TRIAL

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ATDU - FEEDBACK

  • “Confidence in the CRT technology has thus grown

significantly and the trial has identified several possible exploitation opportunities in the current and future UK AFV fleet.”

ATDU/040236 – COMPOSITE RUBBER TRACK TRIAL

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Thanks to the ATDU Team

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QUESTIONS ?