Attachment_5_-_ATPD-2404_-_Environmental_Conditions_for_the_HBCT_Tracked_Vehicle_Systems_dtd_21_Oct_2011.pdf

UNCLASSIFIED

UNCLASSIFIED: Distribution Statement A. Approved for public release.

NOT MEASUREMENT

SENSITIVE

ATPD-2404

21 OCTOBER 2011

INTERFACE STANDARD

ENVIRONMENTAL CONDITIONS FOR THE HEAVY

BRIGADE COMBAT TEAM TRACKED VEHICLE

SYSTEMS

UNCLASSIFED

ii

FOREWORD

1. This standard is approved for use by the U.S. Army Tank Automotive Research, Development and Engineering Center (TARDEC), Research, Development and Engineering

Command (RDECOM), Department of the Army, and is available for use by all Departments and

Agencies of the Department of Defense.

2. Comments, suggestions, or questions on this document should be addressed to U.S. Army

Tank-automotive and Armaments Command, ATTN: RDTA-EN/STND/TRANS, MS# 268, 6501 E. 11 Mile Road, Warren, MI 48397-5000 or emailed to

DAMI_STANDARDIZATION@conus.army.mil. Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at http://assist.daps.dla.mil.

mailto:DAMI_STANDARDIZATION@conus.army.mil http://assist.daps.dla.mil/ iii

1 SCOPE

1.1 Scope

1.2 Application

2 APPLICABLE DOCUMENTS

2.1 General

2.2 Government documents

2.2.1 Specifications, standards and handbooks

2.2.2 Other Government documents, drawings, and publications

2.3 Non-Government publications

2.4 Order of precedence

3 DEFINITIONS

3.1 Environmental test

3.2 Induced environment

3.3 In-service use

3.4 Life cycle profile

3.5 Material

3.6 Materiel

3.7 Mission profile

3.8 Operational check

3.9 Operational worthiness

3.10 Platform

3.11 Platform environment

3.12 Relative humidity

3.13 Subsystem

3.14 System

3.15 Temperature shock

3.16 Test item

3.17 Test procedure

4 GENERAL REQUIREMENTS

4.1 General

5 DETAILED REQUIREMENTS

5.1 Natural environment

5.1.1 High temperature

5.1.1.1 Storage and transportation

5.1.1.2 Operational

5.1.2 Low temperature

5.1.2.1 Storage and transportation

5.1.2.2 Operational

5.1.3 Humidity

5.1.3.1 System

5.1.3.2 Subsystem storage and transportation

5.1.3.3 Subsystem operational

5.1.4 Salt fog

5.1.5 Fungus

5.1.6 Sand

5.1.6.1 Blowing sand external

5.1.6.2 Blowing sand internal

5.1.7 Dust

iv

5.1.7.1 Blowing dust external

5.1.7.2 Blowing dust internal

5.1.8 Altitude

5.1.8.1 Operating

5.1.8.2 Non-operating

5.1.9 Solar radiation

5.1.10 Icing freezing rain

5.1.11 Rain

5.1.12 Snow

5.1.13 Wind

5.2 Induced environment

5.2.1 Vibration

5.2.2 High Temperature

5.2.2.1 Storage and Transportation

5.2.2.2 Operational

5.2.3 Low temperature

5.2.3.1 Storage and transportation

5.2.3.2 Operational internal

5.2.3.3 Operational external

5.2.4 Temperature shock

5.2.5 Shock

5.2.5.1 Basic shock

5.2.5.2 Functional shock

5.2.5.3 Gunfire shock

5.2.5.4 Ballistic shock

5.2.5.5 High intensity shock

5.2.5.6 Transport shock

5.2.5.7 Handling shock

5.2.5.8 Bench handling

5.2.6 Leakage (immersion)

5.2.7 Steam and water jet cleaning

5.2.8 Noise levels

5.2.9 Explosive atmosphere

5.2.10 Rapid decompression

5.2.11 Contamination by fluids

5.2.12 Combined environment

5.3 Nuclear hardness criteria

5.4 Chemical, biological, radiological and nuclear survivability (CBRN)

6 NOTES

6.1 Intended use

6.2 Acquisition requirements

6.3 Acronyms

APPENDIX A

v

Table I. Turret vertical vibration Table II. Turret longitudinal vibration Table III. Turret transverse vibration Table IV. Hull/sponson longitudinal vibration Table V. Hull/sponson transverse vibration Table VI. Hull/sponson vertical vibration Table VII. Tabulated acceleration curve Table VIII. Ballistic shock equivalent static acceleration Table IX. Transportation mode shock and vibration Table X. Combined environmental conditions for operation Table XI. Nuclear survivability criteria requirement Table XII. Acronyms

1 SCOPE

1.1 Scope.

This standard establishes nuclear survivability and environmental interface requirements for

Heavy Brigade Combat Team (HBCT) tracked vehicle systems, subsystems and equipment.

1.2 Application.

This standard is applicable for complete tracked vehicle systems and the subsystems/equipment integrated into the tracked vehicle system, both new and modified.

2 APPLICABLE DOCUMENTS

2.1 General.

The documents listed in this section are referenced in sections 4, and 5 of the main body of this standard. This section does not include documents referenced in other sections of this standard or recommended for additional information or examples. While every effort has been made to ensure completeness of this list, document users are cautioned that they must meet all specified requirements of documents cited in sections 4, and 5 of this standard, whether or not they are listed.

2.2 Government documents.

2.2.1 Specifications, standards and handbooks.

The following specifications, standards and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those sited in the solicitation or contract.

INTERNATIONAL STANDARDIZATION AGREEMENTS

QSTAG 1031 - Quadripartite Standardization Agreement (QSTAG) 1031, Addition 1, Annex D (SECRET).

(Copies of these documents are available from http://nsa.nato.int/nsa/ or NATO Standardization

Agency, North Atlantic Treaty Organization HQ, 1110 Brussels, Belgium, or as directed by the contracting officer.)

COMMERCIAL ITEM DESCRIPTIONS

A-A-52557 - Fuel Oil, Diesel; for Posts, Camps, and Stations

A-A-59133 - Cleaning Compound, high Pressure (Steam) Cleaner

DEPARTMENT OF DEFENSE SPECIFICATIONS

MIL-DTL-5624 - Turbine Fuel, Aviation, Grades JP-4 and JP-5 http://nsa.nato.int/nsa/

MIL-PRF-6083 - Hydraulic Fluid, Petroleum Base, for Preservation and

Operation

MIL-DTL-16884 - Fuel, Naval Distillate

MIL-PRF-46170 - Hydraulic Fluid, Rust Inhibited, Fire Resistant, Synthetic

Hydrocarbon Base, NATO Code No. H-544

MIL-DTL-83133 - Turbine Fuel, Aviation, Kerosene Type, JP-8 (NATO

F 34), NATO F-35, and JP-8+100 (NATO F-37)

DEPARTMENT OF DEFENSE STANDARDS

MIL-STD-810 - Department of Defense Test Method Standard

MIL-STD-1472 - Human Engineering

(Copies of these documents are available from https://assist.daps.dla.mil/quicksearch/ or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA

19111-5094.)

2.2.2 Other Government documents, drawings, and publications.

The following other Government documents, drawings, and publications form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract.

ARMY REGULATIONS AND PAMPHLETS

AR 70-38 - Research, Development, Test and Evaluation of Materiel for Extreme Climatic Conditions

DA-PAM 70-3 - Army Acquisition Procedures

(Copies of these documents are available from http://www.army.mil/usapa/index.html.)

U.S. ARMY NUCLEAR AND COMBATING WMD AGENCY (USANCA)

United States Army Nuclear and Combating WMD Agency (USANCA)

Memorandum for Project Manager HBCT; Subject: Chemical, Biological, Radiological, Nuclear (CBRN) Survivability Criteria for the Abrams; 25 July

2011 (SECRET)

(Copies of these documents are available from usarmy.belvoir.hqda-dcs-g-3-5-7.mail.usanca-mailbox@mail.mil with ATTN: Capabilities Division in the subject line, or U.S. Army Nuclear and Combating WMD Agency, ATTN: Capabilities Division, 5915 16th Street, Building 238, Fort Belvoir, VA 22060-5514) https://assist.daps.dla.mil/quicksearch/ http://www.army.mil/usapa/index.html mailto:usarmy.belvoir.hqda-dcs-g-3-5-7.mail.usanca-mailbox@mail.mil mailto:usarmy.belvoir.hqda-dcs-g-3-5-7.mail.usanca-mailbox@mail.mil

2.3 Non-Government publications.

The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract.

ASTM INTERNATIONAL

ASTM D975 - Standard Specification for Diesel Fuel Oils

ASTM D1655 - Standard Specification for Aviation Turbine Fuels

ASTM D 4814 - Standard Specification for Automotive Spark-Ignition

Engine Fuel

(Copies of these documents are available from www.astm.org or ASTM International, P.O. Box C700, West Conshohocken, PA 19428-2959.)

2.4 Order of precedence.

In the event of a conflict between the text of this document and the references cited herein, the test of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been established.

3 DEFINITIONS

This terminology section is meant to define the general terminology as it is used in this standard.

In certain cases the terminology use may be somewhat different from its use in the general engineering community. No attempt has been made to be complete, therefore limiting the glossary to such terms as are found in the standard and that are important to the application of the standard

3.1 Environmental test.

A structured procedure to help determine the effects of natural or induced environments on materiel.

3.2 Induced environment.

An environmental condition that is predominantly man-made or generated by the materiel platform. Also, refers to any condition internal to materiel that results from the combination of natural environmental forcing functions and the physical/chemical characteristics of the materiel itself.

3.3 In-service use.

The anticipated use of materiel during its intended service use life.

3.4 Life cycle profile.

A time history of events and conditions associated with materiel from its release from manufacturing to its removal from service, including demilitarization. The life cycle should include the various phases materiel will encounter in its life, such as: packaging, handling, shipping, and storage prior to use; mission profiles while in use; phases between missions such http://www.astm.org/ as stand-by or storage, transfer to and from repair sites and alternate locations; and geographical locations of expected deployment.

3.5 Material.

The physical constituents comprising materiel, e.g., metals, plastics, cloth, paper, etc.

3.6 Materiel.

A commodity or set of commodities. A generic class of hardware designed to perform a specific function. All items (including ships, tanks, self-propelled weapons, aircraft, etc., and related spares, repair parts, and support equipment, but excluding real property, installations, and utilities) necessary to equip, operate, maintain, and support military activities without distinction as to its application for administrative or combat purposes.

3.7 Mission profile.

That portion of the life cycle profile associated with a specific operational mission.

3.8 Operational check.

This is a failure finding task to determine if an item is fulfilling its intended purpose. Means to operate the materiel or component as usual (all modes and functions) and determine whether or not it is useable for its intended purpose.

3.9 Operational worthiness.

The capability of materiel, a subsystem, or component to perform its full array of intended functions.

3.10 Platform.

Any vehicle, surface, or medium that carries the materiel. For example, an aircraft is the carrying platform for installed avionics items or transported or externally mounted stores. The land is the platform for a ground radar set, for example, and a person for a man-portable radio.

3.11 Platform environment.

The environmental conditions materiel experiences as a result of being attached to or loaded onto a platform. The platform environment is influenced by forcing functions induced or modified by the platform and any platform environmental control systems.

3.12 Relative humidity.

The ratio of the actual vapor pressure of the air to the saturation vapor pressure. Source:

American Meteorological Society. (1959). Glossary of Meteorology. Boston: AMS Relative humidity (RH) indicates the degree of saturation of the air.

3.13 Subsystem.

A portion of a system containing two or more integrated components that, while not completely performing the specific function of a system, may be isolated for design, test, or maintenance.

For the purpose of establishing environmental requirements, either of the following shall be considered as subsystems. In either case, the devices or equipment may be physically separated when in operation and will be installed in fixed or mobile stations, vehicles, or systems.

a. A collection of devices or equipment designed and integrated to function as a single entity but wherein no device or equipment is required to function as an individual device or equipment.

b. A collection of equipment and subsystems as designed and integrated to function as a major subdivision of a system and to perform an operational function or functions. Some activities consider these collections as systems, however as noted above, they will be considered as subsystems.

3.14 System.

A composite of equipment, subsystems, skilled personnel, and techniques capable of performing or supporting a defined operational role. A complete system includes related facilities, equipment, subsystems, materials, services, and personnel required for its operation to the degree that it can be considered self-sufficient within its operational or support environment.

3.15 Temperature shock.

A change in temperature greater than or equal to 10 degrees C (18 degrees F) within one minute.

3.16 Test item.

Specific materiel, a subsystem, or component being tested, including its container and packaging materials, that is representative of the materiel being developed. A representative sample of materiel that is used for test purposes.

3.17 Test procedure.

A sequence of actions that prescribes the exposure of a test item to a particular environmental forcing function or combination of environmental forcing functions, as well as inspections, possible operational checks, etc.

4 GENERAL REQUIREMENTS

4.1 General.

Each system, subsystem and equipment shall maintain its operational worthiness within the environment specified herein. The environments defined include:

1) Natural Environment: Specifies the environmental condition that the system is required to operate within. Storage, transportation, maintenance and other life cycle configurations are included.

2) Induced Environment: An environmental condition that is predominantly man-made or generated by the materiel platform. Also, refers to any condition internal to materiel that results from the combination of natural environmental forcing functions and the physical/chemical characteristics of the materiel itself. Storage, transportation, maintenance and other life cycle configurations are included.

3) Nuclear: Specifies the environmental conditions after a nuclear event which subsystems and equipment integrated inside (internal) and outside (external) are required to reside and operate.

4) Chemical, Biological, Radiological, and Nuclear (CBRN): Specifies the CBRN contamination survivability criteria for Army materiel.

5) Other specific environments may be defined within the specific subparagraphs are necessary.

The absence of an external or internal description indicates that that requirement applies to both internal and external subsystems and equipment. Verification shall address all life cycle aspects of the system, including (as applicable) normal in-service operation, checkout, storage, transportation, handling, packaging, loading, unloading, launch and the normal operating procedures associated with each aspect.

5 DETAILED REQUIREMENTS

Paragraph 5 of this standard specifies the environmental requirements for tracked vehicle systems, subsystems and equipment managed by Project Manager (PM) HBCT. Each system requirement includes the analysis, test or combination thereof that determines the effectiveness of the design and supports the system tests that are typically performed by a DoD test facility.

5.1 Natural environment.

5.1.1 High temperature.

5.1.1.1 Storage and transportation.

The system shall meet its full performance requirements without performance or physical degradation after 12 months without preservation and 5 years with preservation, to a maximum air temperature of 160 degrees F (71 degrees C). Air temperature variation during any 24 hour period shall be sinusoidal with a maximum variation of 60 degrees F. The average temperature during this period shall be between negative 40 degrees F and positive 130 degrees F. Periodic maintenance may be performed during the 12 month period without preservation. Compliance shall be verified by combination of analysis and test.

5.1.1.2 Operational.

degradation while operating at ambient air temperatures up to 125 degrees F (52 degrees C).

Compliance shall be verified by combination of analysis and test.

5.1.2 Low temperature.

5.1.2.1 Storage and transportation.

degradation after 12 months without preservation and 5 years with preservation, to a minimum air temperature of -60 degrees F (-51 degrees C). Air temperature variation during any 24 hour period shall be sinusoidal with a maximum variation of 60 degrees F. The average temperature during this period shall be between -40 degrees F and +130 degrees F. Periodic maintenance may be performed during the 12 month period without preservation. Compliance shall be verified by combination of analysis and test.

5.1.2.2 Operational.

degradation while operating to a minimum ambient air temperature of -60 degrees F

(-51 degrees C). Below -25 degrees F (-32 degrees C), winterization kits and one-hour vehicle warm-up are permitted. Compliance shall be verified by combination of analysis and test.

5.1.3 Humidity.

5.1.3.1 System.

degradation while operating and after 12 months storage without preservation or 5 years storage with preservation in ambient relative humidity of up to 100 percent under climatic design types hot, basic and cold, including all daily cycles as defined in AR 70-38. Compliance shall be verified by combination of analysis and test.

5.1.3.2 Subsystem storage and transportation.

The subsystem or equipment shall meet its full performance requirements, without degradation, after aggravated temperature-humidity conditions up to and including:

a) Temperature range: 86 degrees F to 140 degrees F (30 degrees C to 60 degrees C)

b) Relative humidity range: 95 5 percent.

Compliance shall be In Accordance with (IAW) the induced hot-humid conditions of

MIL-STD-810G Method 507.5, Procedure I, for 15 cycles.

5.1.3.3 Subsystem operational.

The subsystem or equipment shall meet its full performance requirements, without degradation, during and after aggravated temperature-humidity conditions up to and including:

a) Temperature range: 86 degrees F to 140 degrees F (30 degrees C to 60 degrees C)

b) Relative humidity range: 95 5 percent.

Compliance shall be IAW the induced hot-humid conditions of MIL-STD-810G Method 507.5, Procedure I, for 15 cycles.

5.1.4 Salt fog.

The system, subsystem or equipment shall meet its full performance requirements, without degradation, and show no evidence of damage after exposure to a 5% aqueous salt. Compliance shall be IAW MIL-STD-810G Method 509.5 for 48 hours of exposure and 48 hours of drying time.

5.1.5 Fungus.

The system, subsystem or equipment shall not support fungal growth in all of its life cycle configurations. Compliance shall be IAW MIL-STD-810G Method 508.6.

5.1.6 Sand.

5.1.6.1 Blowing sand external.

The system, externally mounted subsystem or externally mounted equipment shall meet its full performance requirements without performance or physical degradation during and after exposure to 0.3 to 0.5 grams per cubic foot (g/ft ) blowing silica sand from 0.01mm to 1mm in diameter, at a velocity of no less than 15 meters per second (m/s). Compliance shall be IAW

MIL-STD-810G, Method 510.5 and Procedure II for 60 minutes on each face. Protective covering is allowed for optics.

5.1.6.2 Blowing sand internal.

The internal subsystems or equipment shall meet their full performance requirements without performance or physical degradation during and after exposure to 1.1 ±0.25 grams per cubic meter (g/m3) blowing silica sand at a velocity of no less than 1.5 ±0.2 meter per second (m/s).

Compliance shall be IAW MIL-STD-810G, Method 510.5 and Procedure II for 90 minutes on each face (Protective covering for the glass is allowed for internal subsystems or equipment).

5.1.7 Dust.

5.1.7.1 Blowing dust external.

The system, external subsystems or external equipment shall meet their full performance requirements without performance or physical degradation during and after exposure to 6 X 10 -9 gm/cm silica flour dust from 0.0001mm to 0.01mm in diameter blowing at a velocity of no less than 18 m/s. Compliance shall be IAW MIL-STD-810G, Method 510.5 and Procedure I for 60 minutes on each face.

5.1.7.2 Blowing dust internal.

The internal subsystems or equipment shall meet their full performance requirements without performance or physical degradation during and after exposure to 11 ±7.0 g/m silica flour dust blowing at a velocity of 1.5 ±0.2 m/s. Compliance shall be IAW MIL-STD-810G, Method 510.5 and Procedure I for 6 hours at 23 degrees C and 6 additional hours at the maximum high operating temperature as specified in this document for all life cycle configurations.

5.1.8 Altitude.

5.1.8.1 Operating.

The system, subsystem or equipment shall operate at altitudes from 1300 feet below to 15,000 feet above sea level and atmospheric pressures of 508 millibars to 1080 millibars. Compliance shall be IAW MIL-STD-810G Method 500.5, Procedure II.

5.1.8.2 Non-operating.

The system, subsystem or equipment shall meet its full performance requirements without performance or physical degradation damage after storage at elevations of 0 to 50,000 feet above sea level. Compliance shall be IAW MIL-STD-810G Method 500.5 Procedure I, for duration of

4 hours for all life cycle configurations.

5.1.9 Solar radiation.

The system and subsystems or equipment exposed to the sun by external mounting or open hatches shall meet their full performance requirements without performance or physical degradation during and after exposure to solar radiation for 16 hours a day at the maximum high temperature system environment specified herein. Compliance shall be IAW MIL-STD-810G

Method 505.5, Procedure I.

5.1.10 Icing freezing rain.

The system and externally mounted subsystems or equipment shall meet their full performance requirements without performance or physical degradation during and after exposure to icing conditions of suspended ice crystals averaging 5 to 20mm in diameter of sufficient density to limit visibility to 5 feet. Icing conditions shall persist for extended durations allowing ice buildup of 6 inches. Compliance shall be IAW MIL-STD-810G Method 521.3.

5.1.11 Rain.

The system and externally mounted subsystems and equipment shall meet its full performance requirements without performance or physical degradation during and after exposure to a 12 hour rainfall with droplet size ranging from 0.5mm to 4.5mm with a median of 2.5mm at a wind velocity of 18 m/s. Compliance shall be IAW MIL-STD-810G Method 506.5, Procedure I.

5.1.12 Snow.

The system and externally mounted subsystems or equipment shall meet their full performance requirements without performance or physical degradation during and after exposure to falling snow crystals of 0.5 to 20mm diameter of sufficient density to accumulate 4 inches per hour.

Snow conditions shall persist for extended durations allowing snow loads of 20 lbs/ft

Compliance shall be by a combination of test, analysis and/or inspection.

5.1.13 Wind.

degradation for sustained wind velocities up to 55 knots with gusts up to 85 knots. Compliance shall be by a combination of test, analysis and/or inspection.

5.2 Induced environment.

5.2.1 Vibration.

The system, subsystems and equipment shall meet their full performance requirements without performance or physical degradation during and after vibrational stresses as outlined in the composite isolated random-on-random vibration Tables I through VI for turret and hull/sponson locations. Compliance shall be by test IAW MIL-STD-810G Method 514.6, Vibration, Procedure I, Category 20, Ground Vehicles.

Table I. Turret vertical vibration.

Table II. Turret longitudinal vibration.

Table III. Turret transverse vibration.

Table IV. Hull/sponson longitudinal vibration.

Table V. Hull/sponson transverse vibration.

Table VI. Hull/sponson vertical vibration.

5.2.2 High Temperature.

5.2.2.1 Storage and Transportation.

The subsystem or equipment shall meet its full performance requirements without performance or physical degradation after storage at up to 160 degrees F (71 degrees C). Compliance shall be by test IAW with MIL-STD-810G Method 501.5 High Temperature Procedure I, Storage for 48 hours at 71 degrees C.

5.2.2.2 Operational.

Subsystems or equipment exposed to air temperatures near or on the engine (in engine compartment, on transmission or final drive) shall meet their full performance requirements without performance or physical degradation during its worst case thermal operating cycle at ambient air temperatures of 340 degrees F (171 degrees C).

Subsystems or equipment exposed to air temperatures immediately above the engine (in and above engine compartment) shall meet their full performance requirements without performance or physical degradation during its worst case thermal operating cycle at ambient air temperatures of 340 degrees F (171 degrees C) and with the surface exposed to the engine at a skin temperatures of 360 degrees F (182 degrees C).

Subsystems or equipment that are mounted above the recoil portion of a weapon shall meet their full performance requirements without performance or physical degradation during its worst case thermal operating cycle at ambient air temperatures of 160 degrees F (71 degrees C) and with a mounting surface skin temperature of 180 degrees F (82 degrees C).

Subsystems or equipment that are not exposed to engine temperatures shall meet their full performance requirements without performance or physical degradation during its worst case thermal operating cycle at ambient air temperatures of 160 degrees F (71 degrees C).

Compliance shall be by test IAW MIL-STD-810G Method 501.5 High Temperature Procedure II at a constant temperature of 160 degrees F (71 degrees C) for 6 hours with the minimum airflow for all potential mounting locations. The subsystem or equipment shall be operating in its thermally worst case mode.

5.2.3 Low temperature.

5.2.3.1 Storage and transportation.

or physical degradation after storage at -60 degree F (-51 degrees C). Compliance shall be by test IAW MIL-STD-810G Method 502.5, Low Temperature Storage Procedure I and storage for

20 hours at -60 degrees F (-51 degrees C).

5.2.3.2 Operational internal.

The subsystem or equipment mounted internal to the system shall meet its full performance requirements without performance or physical degradation during continuous operation, with manipulation, immediately after power up at an ambient temperature of -51 degree F (-46 degrees C).

Compliance shall be by test IAW MIL-STD-810G Method 502.5 Low Temperature Procedure II for 4 hours at -51 degree F (-46 degrees C). The temperature of the non-operating subsystem or equipment shall stabilize to -51 degree F (-46 degrees C) prior to the 4 hour operational test.

5.2.3.3 Operational external.

The subsystem or equipment mounted on the exterior of the system shall meet its full performance requirements without performance or physical degradation during continuous operation, with manipulation, immediately after power up at an ambient temperature of -60 degree F (-51 degrees C). Compliance shall be by test IAW MIL-STD-810G Method 502.5 Low

Temperature Procedure II for 4 hours at -60 degree F (-51 degrees C). The temperature of the non-operating subsystem or equipment shall stabilize to -60 degree F (-51 degrees C) prior to the

4 hour operational test.

5.2.4 Temperature shock.

The subsystem or equipment shall meet its full performance requirements after withstanding sudden changes in the temperature range between the low storage temperature and high storage temperature extremes specified herein. Compliance shall be by test IAW MIL-STD-810G

Method 503.5 Procedure I-C, with three (3) cold and three (3) hot temperature conditions.

Transition time from high temperature to low temperature chamber or low temperature to high temperature chamber shall less than five (5) minutes.

5.2.5 Shock.

5.2.5.1 Basic shock.

performance or physical degradation with continuous operation during and after exposure to peak, half-sine wave shock impulses applied in each direction of three mutually perpendicular axes. The shock pulse shall be as described in Table VII. Compliance shall be by test IAW

MIL-STD-810G Method 516.6 Procedure I.

5.2.5.2 Functional shock.

or physical degradation with continuous operation during and after exposure to 18 shock impulses of 15 ± 3 g, 75.0ms half sine wave applied in each direction of three mutually perpendicular axes. Compliance shall be by test IAW MIL-STD-810G Method 516.6

Procedure I.

Table VII. Tabulated acceleration curve.

5.2.5.3 Gunfire shock.

performance or physical degradation with continuous operation during and after exposure to 18 half-sine wave shock impulses of 200 g 20%, 1.0 0.1ms applied in each direction of the three mutually perpendicular axes.

The system, subsystem or equipment directly affected by the recoil of larger than 100 mm canons shall meet its full performance requirements without performance or physical degradation with continuous operation during and after exposure to 18 half-sine wave shock impulses of 500 g 20%, 1.0 0.1 ms applied in each direction of the three mutually perpendicular axes.

Compliance shall be by analysis and test.

5.2.5.4 Ballistic shock.

performance or physical degradation with continuous operation during and after exposure to shock impulses described in Table VIII applied in each direction of the three mutually perpendicular axes. Compliance shall be by test IAW MIL-STD-810G Method 516.6

Procedure I.

Table VIII. Ballistic shock equivalent static acceleration.

5.2.5.5 High intensity shock.

The subsystem or equipment mounted in crew compartments, directly affected by the recoil of larger than 100 mm canons shall remain intact and not become a secondary projectiles when

Freq. (Hz) Equivalent Static

Acceleration (g)

1 0.5

25 50.0

85 50.0

200 34.0

500 32.0

Frequency (Hz) Shock level (g)

30 20

175 500

10000 30000

100000 300000 subjected to exposure of 6 half-sine wave shock impulses of 1200 g 20%, 1.0 0.1ms applied in each direction of the three mutually perpendicular axes.

The subsystem or equipment mounted in turret bustle and turret basket crew compartments shall remain intact and not become a secondary projectiles when subjected to exposure of 6 half-sine wave shock impulses of 550 g 20%, 0.5 0.05ms applied in each direction of the three mutually perpendicular axes.

The subsystem or equipment mounted in crew compartments, but not located in the turret bustle, turret basket or affected to canon recoil shall remain intact and not become a secondary projectiles when subjected to exposure of 6 half-sine wave shock impulses of 950 g 20%, 0.5

0.05ms applied in each direction of the three mutually perpendicular axes.

Compliance shall be by test IAW MIL-STD-810G Method 516.6 Procedure I.

5.2.5.6 Transport shock.

degradation after shock impulses at the vehicle tracks that interface with the transport bed with shock and vibration characteristics defined in Table IX. Compliance shall be verified by combination of analysis and test.

5.2.5.7 Handling shock.

performance or physical degradation with continuous operation during the shock stresses resulting from a free fall from a height of 2 feet with the vehicle tracks impacting the ground surface. Compliance shall be verified by combination of analysis and test.

5.2.5.8 Bench handling.

or physical degradation after undergoing a bench handling test IAW MIL-STD-810G Method

516.6 Procedure VI. Compliance shall be by test IAW MIL-STD-810G Method 516.6

Procedure VI.

Table IX. Transportation mode shock and vibration.

Vibration

Vertical Longitudinal Transverse

Transportation Direction Shock

Level

(g)

(g's) (Hz) (g's) (Hz) (g's) (Hz)

Road

Transporter (1)

Longitudinal 8 2 300 2 300 2 300

Rail Longitudinal 10 2 70 2 70 2 70

Fixed Wing

Aircraft (C5)

(2)

Forward

Side

Vertical (up)

Vertical

(down)

Aft

1.5

2.5

2.5

1.5

Ship (3) All

Directions

2.0

Notes: (1) AMCP 706-355 Engineering Design Handbook (The Automotive Assembly).

(2) AR 705-35 Criteria for Air Portability and Airdrop of Material.

(3) AMCP 706-357 Engineering Design Handbook (Automotive Bodies and Hulls).

5.2.6 Leakage (immersion).

The subsystem or equipment shall deny water entry and operate after immersion to a depth of 1 meter for 2 hours. The subsystem or equipment shall be conditioned to 27 degrees C above water temperature. Subsystems or equipment located on the hull exterior or engine compartment that may be submerged during fording shall deny water entry and operate after immersion to a depth of 2 meters for 2 hours. Compliance shall be IAW MIL-STD-810G Method 512.5

Immersion Procedure I. Connector covers equivalent to Item interconnect harness connectors are permitted. Pressurized air may be used to remove water from the connector pins after immersion.

5.2.7 Steam and water jet cleaning.

The system, subsystem or equipment shall meet its full performance requirements, without degradation, and show no evidence of damage or deformation following a steam and water (at 75 degrees C) jet cleaning process, which uses a cleaner conforming to A-A-59133. Nozzle pressure shall be 110 + 11 pounds per square inch gage (psig). A 0.25 to 0.30 inch orifice shall be used for the water jet.

Compliance shall be verified by test and inspection. The jet spray shall be applied perpendicular to the surface being cleaned at a distance of 1.0 + 0.5 foot from the surface for steam cleaning and 5.0 + 0.5 feet from the surface for water jet cleaning, and the surface cleaned at a rate of 1.0 square foot per minute.

5.2.8 Noise levels.

Maximum Noise Levels for subsystems and equipment shall be within the guidelines specified by MIL-STD-1474.

5.2.9 Explosive atmosphere.

The system, subsystem or equipment shall not cause ignition of an explosive atmosphere.

Compliance shall be IAW MIL-STD-810G Method 511.5 Procedure I.

5.2.10 Rapid decompression.

or physical degradation damage after rapid decompression from an altitude of 15,000 feet to an equivalent altitude of 40,000 feet in less than 15 seconds, with sustained exposure to the reduced pressure for at least 10 minutes for all life cycle configurations. Compliance shall be IAW MIL-

STD-810G Method 500.5, Procedure III.

5.2.11 Contamination by fluids.

performance or physical degradation after exposure to the following fluids for all life cycle configurations:

a. Fuel per A-A-52557 (DF-1, DF-2 or DF-A) or ASTM D975 (Commercial diesel No. 1-D or No. 2-D)

b. MIL-DTL-5624 (Grade JP-4 and JP-5), MIL-DTL-83133 (Grade JP-8) or ASTM D1655

(Commercial turbine jet -1 or A-1)

c. ASTM D 4814 (MoGas) or regular automotive leaded gasoline

d. Marine diesel fuel oil per MIL-DTL-16884

e. Hydraulic fluid per MIL-PRF-46170

f. Petroleum hydraulic fluid per MIL-PRF-6083

g. Cleaning agents per A-A-59133

Compliance shall be IAW MIL-STD-810G Method 504.1 Procedure II.

5.2.12 Combined environment.

The system, subsystem or equipment shall meet the operational environmental condition requirements specified herein over the temperature range as noted in Table X. Compliance shall be by a combination of test and/or analysis.

Table X. Combined environmental conditions for operation.

Environmental

Condition Type

Temperature

-50 to -35 degrees F -25 to +110 degrees F +90 to +125 degrees F

Solar Radiation X X

Humidity Nil Nil to100% 3 to 88%

Sand and Dust X X X

Atmospheric Pressure X X X

Salt Fog X X X

Altitude X X X

Vibration X X X

Snow X X

Rain X X

Wind X X X

Ice Freezing Rain X X

Gun Firing Shock X X X

Ballistic Shock X X X

Functional Shock X X X

Noise Levels X X X

Nuclear Hardness X X X

5.3 Nuclear hardness criteria.

Subsystems or equipment that support the Mission Essential Functions (MEF) defined in the system Scope of Work (SOW) shall meet their full performance requirements without performance or physical degradation after exposure to the radiation levels, blast levels and thermal levels specified in the following documentation as defined in Table XI:

1) United States Army Nuclear and Combating WMD Agency (USANCA) Memorandum for Project Manager HBCT; Subject: Chemical, Biological, Radiological, Nuclear

(CBRN) Survivability Criteria for the Abrams; 25 July 2011 (SECRET)

2) Quadripartite Standardization Agreement (QSTAG) 1031, Addition 1, Annex D

(SECRET).

Compliance shall be as defined in Table .

Table XI. Nuclear survivability criteria requirement.

Criteria Type Equipment

Location Reference to Criteria Document

Compliance

Method

Combined

Neutron/

Gamma

Ionizing

Dose

External

USANCA Memorandum (Item 1) Analysis and Test

Internal USANCA Memorandum (Item 1) Analysis and Test

Gamma

Dose Rate

External USANCA Memorandum (Item 1) Analysis and Test

Internal QSTAG 1031 (Item 2) Analysis and Test

Neutron

Fluence

External USANCA Memorandum (Item 1) Analysis and Test

Internal USANCA Memorandum (Item 1) Analysis and Test

Blast External USANCA Memorandum (Item 1)TBD Analysis or Test

Thermal External USANCA Memorandum (Item 1) Analysis or Test

5.4 Chemical, biological, radiological and nuclear survivability (CBRN).

The system and subsystem CBRN requirements are defined in Appendix A (NBC Contamination

Survivability Criteria for Army Material) of this document.

6 NOTES

(This section contains information of a general or explanatory nature that may be helpful, but is not mandatory.)

6.1 Intended use.

This standard contains the environmental conditions for the HBCT tracked vehicle systems.

6.2 Acquisition requirements.

Acquisition documents should specify the following:

a. Title, number, and date of the specification.

b. If required, the specific issue of individual documents referenced (see 2.2.1, 2.2.2 and 2.3).

6.3 Acronyms.

Table XII. Acronyms.

Acronym Acronym Definition

CBRN Chemical, Biological, Radiological, Nuclear

DA-PAM Department of the Army Pamphlet

DOD Department of Defense

HBCT Heavy Brigade Combat Team

IAW In Accordance With

MEF Mission Essential Functions

PM Program Manager

QSTAG Quadripartite Standardization Agreement

SOW Statement of Work

TBD To Be Determined

USANCA United States Army Nuclear and Combating WMD Agency

APPENDIX A

NBC CONTAMINATION SURVIVABILITY CRITERIA

FOR ARMY MATERIAL

30 May 2005

Custodian: Preparing Activity:

Army - AT Army - AT

NOTE: The activities listed above were interested in this document as of the date of this document. Since organizations and responsibilities can change, you should verify the currency of the information above using the ASSIST Online database at https://assist.daps.dla.mil.

https://assist.daps.dla.mil/