Attachment_0029__Transportability_Report_for_621_GScraper_17FEB2011.pdf

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Contract No. M67854-10-D-5117 CDRL A038

U.S. Military 621G Scraper

Transportability Report

F E B R U A R Y 1 7 , 2 0 1 1

P R E P A R E D B Y :

Paul Todd Sr. Engineer

Caterpillar Inc.

Defense & Federal Products

P.O. Box 470 Mossville, IL 61552

Email: todd_paul@cat.com Phone: 309-579-4061

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Table of Contents

Section Title

1.0 Brief Description

1.1 Intended Use

1.2 Type of Equipment

1.3 Military Units

1.4 Theaters of Operation

1.5 Planned Quantity

2.0 Transportation Data

2.1 Hazardous Materials

2.2 Sectionalization and Reduction

2.3 Modeling and Simulation

2.4 Transportability Tests

2.5 Speed Requirements

2.6 Shipping Data Plate

2.7 Crew Size

2.8 Photographs

2.9 Dimensional and Weight Data Sets

2.10 Lifting and Tie Down Provisions

2.11 Projections

2.12 Additional Information

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1.0 Brief Description

1.1 Intended Use

The U.S. Military 621G Tractor-Scraper, henceforth called the ‘Scraper’, is intended for use by U.S. Military forces during worldwide earthmoving and construction projects. The Scraper is capable of self-loading, hauling and distributing soil. It performs earthmoving, stockpiling, rough grading, towing, and machine recovery operations. The Scraper withstands cross-country operation, fording streams and negotiating longitudinal and side hill slopes without damage.

1.2 Type of Equipment

The Scraper is a non-developmental item as it is a modified commercial Caterpillar 621G Scraper.

1.3 Military Units

The Scraper is intended for Active component, Reserve component, and National Guard combat engineering units.

1.4 Theaters of Operation

The Scraper provides tactical mobility for worldwide use.

1.5 Planned Quantity

The following table summarizes the estimated acquisition quantity by calendar year for the Scraper.

Calendar Year Quantity

2010 5

2011 2

2012 100

2013 100

2014 100

2015 100

2016 100

2017 100

2018 100

2019 100

2020 100

Table 1.5-1 Estimated Scraper Acquisition Quantities

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2.0 Transportation Data

2.1 Hazardous Materials

2.1.1 Vehicle

• Hazardous material class 9

• DOT proper shipping name Vehicle, flammable liquid powered

• Net explosive weight N/A

• Venting requirements None

• Grounding requirements None

2.1.2 Ether Starting Cylinder

• Hazardous material class 3

• DOT proper shipping name Ethyl ether

• Net explosive weight 18 oz.

• Venting requirements None

• Grounding requirements None

2.2 Sectionalization and Reduction

Sectionalization and reduction of the Scraper is not required for rail, highway and marine transport as defined by the contract.

2.3 Modeling and Simulation

2.3.1 Rail Transport

Figure 2.3.1-1 shows a computer model of the Scraper on a 50-inch-high rail car inside the Department of Defense (DOD) Strategic Rail Corridor Network (STRACNET) rail diagram.

Figure 2.3.1-2 shows a computer model of the armored Scraper on a 50-inch-high rail car inside the DOD STRACNET rail diagram. This simulation verifies that disassembly is not required to transport both the armored and unarmored Scraper within the Continental United States (CONUS) on the rail as per the DOD STRACNET rail diagram.

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Figure 2.3.1-1 Scraper with Standard Cab in DOD STRACNET Rail Diagram

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Figure 2.3.1-2 Scraper with Armored Cab in DOD STRACNET Rail Diagram

2.3.2 Highway Transport

Figure 2.3.2-1 shows a side view of the Scraper on an M870 Medium Heavy Equipment Transporter (MHET). A parking platform approximately 12” high is required under the front axle to provide clearance between the belly of the Scraper and the trailer gooseneck. Figure 2.3.2-2 shows a top view of the Scraper on an M870 MHET. Figure 2.3.2-3 shows a side view of the armored Scraper on an M870 MHET. Figure 2.3.2-4 shows a top view of the armored Scraper on an M870 MHET. The simulation verifies that the Scraper will fit onto the M870 MHET. The width and height of the Scraper dictate that permits are required for local, state, federal or foreign government travel.

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Figure 2.3.2-1 Scraper with Standard Cab on M870 MHET – Side View

Figure 2.3.2-2 Scraper with Standard Cab on M870 MHET – Top View

Figure 2.3.2-3 Scraper with Armored Cab on M870 MHET – Side View

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Figure 2.3.2-4 Scraper with Armored Cab on M870 MHET – Top View

2.3.1 Air Transport

The front axle load of the unloaded Scraper, with and without the armored cab, exceeds the 36,000 lb single axle weight limit for the C-17 and C-5 aircraft, and is therefore not air transportable. The Scraper, however, fits within the dimensional requirements of both aircraft.

2.4 Transportability Tests

The Government will conduct the following transportability tests at Aberdeen Proving Grounds, MD in 2011.

2.4.1 Rail Transport Test

The Scraper shall be evaluated by the government for compliance with the dimensions of the DOD clearance profile for the STRACNET and shall be subjected to the rail impact verification.

The Scraper shall be capable of withstanding shock loads resulting from rail impact without failure, damage or permanent deformation. This verification shall be conducted in accordance with MIL-STD-810 by mounting the Scraper on a rail car in its rail shipment configuration and then performing a series of at least four impacts. The first three impacts shall be at 6.4, 9.7, and 13 km/h (4, 6, and 8 mph), respectively, in the same direction. The fourth shall be conducted at 13 km/h (8 mph) in the reverse direction. All four impacts shall have a tolerance of +0.8, -0.0 km/h. After each impact, the Scraper shall be inspected for spillage of lubricants, fuel or water and structural damage. Electrical shorts and normal operations and performance shall be checked and validated following the completion of the verification procedure. Performance degradation or permanent deformation of any part is considered a deficiency and a failure.

Spillage of lubricants, fuel or water; structural damage; or electrical shorts shall also constitute failure of this verification procedure.

2.4.2 Marine Transport Test

The Scraper is capable of transport on RORO, barge carrying (LASH and SEABEE) ships, and Army watercraft. The Scraper shall be evaluated by the government to determine conformance with the dimensions and weight limitation for transport on break-bulk, RORO, barge-carrying ships, and Army watercraft. Inability to be transported by these watercrafts without disassembly and in accordance with MIL-STD-1366, shall constitute failure of this verification.

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2.4.3 Highway Transport Test

The Scraper is highway transportable with permits on an M870 trailer and does not require disassembly. The Scraper shall be evaluated by the Government to verify compliance with transportation dimensional requirements when transported on the M870 trailers. The Scraper shall be evaluated for agreement with the dimensions and weight limits of the U.S. and NATO countries highway legal limits for transport on military trailers. If the Scraper cannot meet legal limits for transport, an evaluation shall be conducted to determine what permits will be required when transported on the M870 trailer and when transported on a commercial lowboy trailer.

2.4.4 Air Transport Test

The Scraper is not air transportable. The front axle load of the unloaded Scraper, with and without armored cab, exceeds the 36,000 lb single axle weight limit for the C-17 and C-5 aircraft.

2.5 Speed Requirements

The Scraper, without load, is capable of a forward travel speed of not less than 30 mph on level pavement. The Scraper, with full load, is capable of a forward travel speed of not less than 25 mph (Threshold) on level pavement. The Scraper has a maximum forward travel speed of 32 mph (both loaded and unloaded) on level pavement and maximum reverse travel speed of 5.7 mph.

2.6 Shipping Data Plate

Figure 2.6-1 shows the shipping data plate for the Scraper. The plate has a black background with silver lettering and will be installed on every Scraper. Before lifting the Scraper, install two articulation locks on the steering cylinders and two oscillation blocks on the hitch to prevent unintended movement of the Scraper during shipment or maintenance.

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Figure 2.6-1 Shipping Data for Scraper

2.7 Crew Size

One person is needed to operate the Scraper.

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2.8 Photographs

Figure 2.8-1 Scraper Produced for Production Qualification Testing

Figure 2.8-2 Armored Cab Installed on Scraper for Ballistics Testing

2.9 Dimensional and Weight Data Sets

2.9.1 Estimated Gross Vehicle Weights (GVW)

• Scraper with Standard Cab, No Load, Full Fuel 72,730 lb

• Scraper with Armored Cab, No Load, Full Fuel 77,730 lb

• Mass of Rated Load (22 Cubic Yard Capacity) 52,800 lb

• Scraper with Standard Cab, Rated Load, Full Fuel 125,530 lb

• Scraper with Armored Cab, Rated Load, Full Fuel 130,530 lb

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2.9.2 Drawings

Figure 2.9.2-1 Transport Dimensions for Scraper with Standard Cab

Figure 2.9.2-2 Transport Dimensions for Scraper with Armored Cab

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2.10 Lifting and Tie Down Provisions

The lifting and tie down provisions on the Scraper meet MIL-STD-209K.

2.10.1 Number, Location, and Strength

The Scraper has four lifting provisions and four tie down provisions, located as shown in Figure 2.10-1. Table 2.10.1-1 provides the location of the provisions with respect to the center of gravity (CG) of the Scraper with standard cab installed. Table 2.10.1-2 provides the location of the provisions with respect to the center of gravity (CG) of the Scraper with armored cab installed. The strength of the provisions takes into account the heaviest Scraper configuration (i.e. with armored cab installed). The design and ultimate load of the lifting and tie down (in the longitudinal, lateral and vertical directions) provisions are provided in Table 2.10.1-3.

Figure 2.10.1-1 Lifting and Tie Down Provision Locations

Location Relative to CG Provision No. Longitudinal Vertical Lateral

A – Lift – Left 1 215 in. ← 28 in. ↑ 15 in.

A – Lift – Right 1 215 in. ← 28 in. ↑ 16 in.

B – Tie Down – Left 1 219 in. ← 7 in. ↓ 27 in.

B – Tie Down – Right 1 219 in. ← 7 in. ↓ 28 in.

C – Lift – Left 1 164 in. → 36 in. ↑ 59 in.

C – Lift – Right 1 164 in. → 36 in. ↑ 60 in.

D – Tie Down – Left 1 281 in. → 15 in. ↓ 28 in.

D – Tie Down – Right 1 281 in. → 15 in. ↓ 29 in.

Table 2.10.1-1 Lift and Tie Down Location for Scraper with Standard Cab

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Location Relative to CG

Provision No. Longitudinal Vertical Lateral A – Lift – Left 1 205 in. ← 26 in. ↑ 12 in.

A – Lift – Right 1 205 in. ← 26 in. ↑ 19 in.

B – Tie Down – Left 1 210 in. ← 9 in. ↓ 24 in.

B – Tie Down – Right 1 210 in. ← 9 in. ↓ 31 in.

C – Lift – Left 1 173 in. → 34 in. ↑ 56 in.

C – Lift – Right 1 173 in. → 34 in. ↑ 62 in.

D – Tie Down – Left 1 290 in. → 17 in. ↓ 25 in.

D – Tie Down – Right 1 290 in. → 17 in. ↓ 31 in.

Table 2.10.1-2 Lift and Tie Down Locations for Scraper with Armored Cab

Lift Tie Down - Long. Tie Down - Lat. Tie Down - Vert.

Provision

Design Load (lb)

Ultimate Load (lb)

Design Load (lb)

Ultimate Load (lb)

Design Load (lb)

Ultimate Load (lb)

Design Load (lb)

Ultimate Load (lb)

A - Lift - Left 67,500 101,250 A - Lift - Right 42,100 63,150 B - Tie Down - Left 179,700 269,550 68,800 103,200 51,300 76,950 B - Tie Down - Right 141,500 212,250 68,800 103,200 40,400 60,600 C - Lift - Left 77,100 115,650 C - Lift - Right 69,400 104,100 D - Tie Down - Left 184,600 276,900 51,600 77,400 39,500 59,250 D - Tie Down - Right 136,000 204,000 51,600 77,400 29,200 43,800

Table 2.10.1-3 Lift and Tie Down Design and Ultimate Load Data

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2.10.2 Dimensions

The dimensions of the lift and tie down provisions on the Scraper are provided in Table 2.10.2-1.

Use Figure 2.10.2-1 for dimension definitions.

A (in.) B (in.) CL (in.) CS (in.) D (in.) E (in.)

Front Lift 1.75 1.50 29.33 27.56 3.94 8.27 Front Tie Down 1.75 1.57 ∞ ∞ 4.53 8.74 Rear Lift 1.42 1.75 ∞ 55.55 3.54 4.21 Rear Tie Down 1.75 1.57 ∞ ∞ 4.53 5.31

Table 2.10.2-1 Lifting and Tie Down Dimensions for Scraper

Figure 2.10.2-1 Lifting and Tie Down Dimensions Diagram

2.11 Projections

The Scraper has no significant projections.

2.12 Additional Information

2.12.1 Gross Vehicle Weight Rating Not Applicable

Refer to Section 2.9.1 for GVW data.

2.12.2 Tires

• Number 4

• Size 33.25-R29, 2-Star

• Load Rating 40,795 lb at 75 psi and 30 mph

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• Locations Left & Right, both Front & Rear

• Inflation Pressure o Scraper with Standard Cab Front axle tires 65 psi Rear axle tires 55 psi o Scraper with Armored Cab

Front axle tires 75 psi Rear axle tires 60 psi

2.12.3 Estimated Axle Loads

Scraper with Standard Cab, No Load, Full Fuel

• Front 49,750 lb

• Rear 22,980 lb

Scraper with Armored Cab, No Load, Full Fuel

• Front 55,680 lb

• Rear 22,050 lb

Scraper with Standard Cab, Rated Load, Full Fuel

• Front 68,910 lb

• Rear 56,620 lb

Scraper with Armored Cab, Rated Load, Full Fuel

• Front 74,830 lb

• Rear 55,700 lb

2.12.4 Maximum Axle Load Rating Not Applicable

2.12.5 Suspension Type and Rating

• Front Suspension Type Fixed

• Rear Suspension Type Fixed

• Front Suspension Rating Not Applicable

• Rear Suspension Rating Not Applicable

2.12.6 Crest Angle

Use Figure 2.12.6-1 for dimension definition.

• φ = 8°

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Figure 2.12.6-1 Crest Angle Diagram

2.12.7 Tire Footprint Dimensions

Use Figure 2.12.7-1 for dimension definitions.

• F1 86.7 inches

• R1 83.7 inches

• F2 and R2 Not Applicable

• F3 and R3 81.4 inches

• F4 and R4 34.4 inches

• F5 and R5 Not Applicable

• Wheelbase (WB) 305 inches

Figure 2.12.7-1 Tire Footprint Dimensions Diagram

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2.12.8 Axle Tracking Width

Use Figure 2.12.8-1 for dimension definitions.

• F1 – Outside Distance 121.1 inches

• F2 – Inside Distance 52.4 inches

• F3 – Front Tire Width 34.4 inches

• R1 – Outside Distance 118.1 inches

• R2 – Inside Distance 49.3 inches

• R3 – Rear Tire Width 34.4 inches

Figure 2.12.8-1 Axle Tracking Width Diagram

2.12.9 Turning Diameter

• Curb-to-Curb 38.4 feet