21RJQ98_SOL_0004_att1.pdf

PRF/21/JXQS/171

Rev - Chg -

This specification as printed is an UNCONTROLLED COPY unless officially stamped and numbered as such and may not represent the latest revision. Review of the document shall take place one year from the date of the final approval.

ELECTRO-OPTIC TECHNOLOGY DIVISION

VISUAL AUGMENTATION SYSTEM ENGINEERING & LOGISTICS BRANCH (JXQS)

Binocular Night Vision Device Mount Performance Specification

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NAVAL SURFACE WARFARE CENTER CRANE DIVISION

ELECTRO-OPTIC TECHNOLOGY DIVISION (JXQ)

CRANE DIVISION

CRANE, INDIANA 47522-5001

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Binocular Night Vision Device Mount Performance Specification

1.0 Scope

1.1 Purpose

This document establishes the performance specification requirements for the Navy Binocular Night Vision Device Helmet Mount, herein referred to as BNVD Mount.

1.2 Maturity of Technology

This solicitation does not seek to conduct basic research, develop the technology base, or explore preliminary concepts that require long periods of research and development. Instead, this solicitation seeks to rapidly procure and field Commercial-Off-the-Shelf (COTS) and/or Non-Developmental Item (NDI) systems that might only require minor Engineering and Manufacturing Development

(EMD).

2.0 Applicable Documents

2.1 Government Documents

2.1.1 Specifications and Standards

The following specifications and standards form a part of this performance specification and will be used for guidance or to the extent specified herein. Unless otherwise specified, the issues of these documents shall be those listed in the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation.

Standards Military

MIL-STD-461F Requirements for the Control of Electromagnetic Interference Characteristics of Subsystems and Equipment

MIL-STD-810G Environmental Test Methods and Engineering Guidelines MIL-STD-130N Identification Marking of US Military Property

2.1.3 Definitions

Facemask-an ergonomically correct design used to support mounting of a Night Vision Device (NVD), directly to a soldier head securely, without usage of a helmet.

Strap- material which allows attachment to Advanced and Enhanced combat helmets that allows for secure retention of the NVD without hardware. This typically includes a tightening mechanism which allows for the material to be secured on to the helmet.

Shroud- A semi-permanent mounting bracket which hard mounts to a low profile interface of the helmet mount via mounting hardware. The low profile helmet interface shroud (bracket) that attaches permanently to the helmet using the one-hole or three-hole configuration common to the Advanced and Enhanced helmets.

2.2 Order of Precedence

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

3.0 Requirements

3.1 Helmet Mount Assembly.

All helmet mounts will be compatible with the AN/PVS-31b dovetail assembly. An AN/PVS-31b dovetail assembly can be provided as Government Furnished Equipment (GFE) if required.

3.1.1 BNVD Helmet Mount – Non-Breakaway.

The BNVD Non-Breakaway head mount assembly shall provide one-handed, quick disconnect, vertical/fore/aft/tilt adjustment, and a locking flip-up/flip-down function. The head mount shall interface and operate with the Advanced Combat Helmet (ACH) and Enhanced Combat Helmet

(ECH).

3.1.1.1 BNVD Helmet Mount Flip-up/Flip-down.

The BNVD shall lock in position for both the operating and stowed positions. The helmet mount shall not inadvertently release the binocular from either locked position during Naval boat, vehicle, and ground operations.

3.1.1.2 Helmet mount vertical adjustment range.

The vertical adjustment in the helmet mount shall vary the vertical distance of the binocular relative to the mount a distance not less than 22mm.

3.1.1.3 Helmet mount fore/aft adjustment range.

The fore/aft adjustment in the helmet mount shall vary the distance of the BNVD relative to the mount a distance not less than 33mm.

3.1.1.4 Helmet mount tilt adjustment range.

The helmet mount shall provide tilt adjustment to vary the angle of rotation of the BNVD a total of not less than 15 degrees.

3.1.1.5 BNVD Removal.

The BNVD shall be quickly removable from the helmet mount using one hand.

3.1.1.6 Helmet mount weight non-breakaway.

The mount weight shall not exceed 170 grams.

3.1.2 BNVD Helmet Mount – Breakaway.

The BNVD helmet mount assembly shall provide one-handed, quick disconnect, vertical/fore/aft adjustment, and a locking flip-up/flip-down function. The helmet mount shall interface and operate with the ACH and ECH helmets. The mount breakaway feature allow shall the operator to preset the mount for a secure lock or to allow it to break away under stress so as to prevent injury. The mount shall break away from helmet with applied pressure of 5 lbs of force and greater.

3.1.2.1 BNVD Helmet Mount Flip-up/Flip-down.

The BNVD shall lock in position for both the operating and stowed positions. The helmet mount shall not inadvertently release the binocular from either locked position during Naval boat, vehicle, and ground operations.

3.1.2.2 Helmet mount vertical adjustment range.

The vertical adjustment in the helmet mount shall vary the vertical distance of the binocular relative to the mount a distance not less than 22 mm.

3.1.2.3 Helmet mount fore/aft adjustment range.

The fore/aft adjustment in the helmet mount shall vary the distance of the BNVD relative to the mount a distance not less than 33 mm.

3.1.2.4 Helmet mount tilt adjustment range.

The helmet mount shall provide tilt adjustment to vary the angle of rotation of the BNVD a total of not less than 15 degrees.

3.1.2.5 BNVD Removal.

The BNVD shall be quickly removable from the helmet mount using one hand.

3.1.2.6 Helmet mount weight breakaway.

The helmet mount weight (excluding hardware/shroud) shall not exceed 180 grams

3.1.3 Helmet shroud to helmet interface.

The helmet mount systems shall enable both semi-permanent and interchangeable helmet mounting configurations. The interface between the dovetail and body sub-assemblies shall not be compromised or show any evidence of damage when a force of 90 lbs is applied perpendicular and parallel to the mount and at an off set of 50 mm (±3mm) from the center of the mount attachment point.

3.1.3.1 Helmet Shroud.

The helmet mount system shall facilitate semi-permanent mounting of the helmet mount via a separate low profile helmet interface shroud (bracket) that attaches permanently to the helmet using the one-hole or three-hole configuration common to the ACH and ECH, helmets. The helmet mount (i.e. component that provides all the adjustment features) shall have the capability to be quickly detached from the helmet interface shroud using only one hand. The helmet mount shall incorporate a feature to protect against inadvertent release from the helmet interface bracket. No tools shall be required to detach the helmet mount from the helmet interface bracket.

3.1.3.2 Helmet shroud weight.

The helmet shroud shall weigh no more than 80 grams.

3.1.4 Helmet Strap.

The helmet strap shall facilitate quick, interchangeable BNVD mounting among the same helmet type via an integrated helmet strap mounting system. The helmet strap mounting system shall be compatible with and utilize the same breakaway or non-breakaway helmet mounts defined above to mount the BNVD. The helmet strap mounting system shall accommodate mounting to all helmet sizes of the ACH and ECH helmets. The helmet strap mounting system shall have a mechanism that allows the user to adjust the tightness of the helmet strap while mounted on the helmet.

3.1.4.1 Helmet Strap Weight.

The helmet strap shall weigh no more than 130 grams for each helmet configuration.

3.1.5 Facemask.

The facemask mounting system shall provide the user the capability to mount the BNVD to their head without using a helmet. The facemask mounting system shall be compatible with and utilize either the breakaway or non-breakaway helmet mounts defined above to mount the BNVD. The facemask mounting system shall provide one-handed, quick disconnect, vertical/fore/aft adjustment, a locking flip-up/flip-down function. The facemask shall be constructed of water-resistant materials.

All facemask mounts will be compatible with the AN/PVS-31b dovetail assembly. An AN/PVS-31b dovetail assembly can be provided as Government Furnished Equipment (GFE) if required.

3.1.5.1 BNVD Facemask Flip-up/Flip-down.

The BNVD shall lock in position for both the operating and stowed positions. The facemask mounting system shall not inadvertently release the binocular from either locked position during Naval boat, vehicle, and ground operations.

3.1.5.2 Facemask vertical adjustment range.

The vertical adjustment in the facemask mounting system shall vary the vertical distance of the binocular relative to the mount a distance not less than 22 mm.

3.1.5.3 Facemask fore/aft adjustment range.

The fore/aft adjustment in the facemask mounting system shall vary the distance of the BNVD relative to the mount a distance not less than 33 mm.

3.1.5.4 Facemask tilt adjustment range.

The facemask mounting system shall provide tilt adjustment to vary the angle of rotation of the BNVD a total of not less than 15 degrees.

3.1.5.5 BNVD Removal.

The BNVD shall be quickly removable from the facemask mounting system using one hand.

3.1.5.6 Facemask Weight.

The facemask mounting system weight (excluding helmet mount) shall not exceed 250 grams.

3.1.6 Nameplates and product markings.

Product marking shall be legible and permanent. All identification information shall be displayed via either labeling (threshold) or direct marking (objective), such as etching/engraving. The manufacturer identification number, contract number, national stock number, and warranty expiration date shall be determined from the contract and placed on the mounts (breakaway and non-breakaway).

3.1.7 Compatibility with Protective Gear.

The BNVD mounts shall be functional while wearing gloves and must accommodate all hand sizes and will be conducted at ambient temperature. The specified glove for use with this requirement is Flyers Summer Glove Series, (Ex: Size: 10 (Large); NSN: 8415-01-029-0113.

3.1.8 Appearance

All internal and external surfaces shall be constructed of, or coated with, natural colored non-reflective materials. Finished items and parts shall not exhibit poor material and processing such as cracks, sharp edges, nicks, burrs, deformations and missing parts which may affect appearance, operations or safety. Extraneous metal shall be removed from castings or forgings. External surfaces shall be rust resistant and have a matte finish with either tan or black colors available excluding facemask (black only).

3.1.9 Salt/Fog

In accordance with MIL-STD-810G, Method 509.5 Salt/Fog, all external surface finishes of the device shall be rust and salt water corrosion resistant and shall not be degraded or damaged when exposed to an environment with 95% humidity and 35°C for a period of 48 hours.

3.1.10 Sand and Dust

In accordance with MIL-STD-810G, Method 510.5 Sand and Dust, the BNVD, with all lenses covered, shall not be damaged and shall operate without degradation after exposure to fine sand and dust particles for 90 minutes on each side.

3.2 Workmanship. Joints and seams shall be tight fit, and electrical wiring shall be secure and with unbroken insulation. Padding shall be free of gouges, tears, excess adhesive, or imbedded foreign matter and shall be attached firmly to the proper surface. All assemblies shall be free from cracks, splits, cold flow, shrinkage, inclusions, porosity, or any similar characteristics. Threads shall be full and undamaged for the entire length or depth as required on the applicable drawing. Objective lens and eyepiece assemblies shall be free from burrs and shall be free from chips, dirt, grease, rust, corrosion, or any embedded foreign materials. All moving parts and adjustments shall move freely throughout their entire range without sticking, binding, or creeping. Parts shall not be missing or damaged

3.3 Technical interpretation. The following technical interpretations shall be, when referenced in section 3, mandatory for this specification.

3.3.1 Damage. Damage is defined as a malfunction to including a failure of any surface, finish, or materials, foreign material; failure of any hardware, connection or component; or any imperfections that adversely affect the prescribed performance.

3.3.2 Degradation. Degradation is defined as a significant change in measurable characteristics, which results in the assembly no longer meeting specified requirements or indicates that there is an inherent defect in the operating characteristics of the unit.

3.3.3 Normal Usage. Normal usage is defined as any and all U.S. Navy, including Naval Special Warfare, missions and training. This shall include insertion and extraction using ground vehicles, small high-speed boats, aircraft, and ground or foot soldier usage. This shall also include fast roping and repelling.

3.3.4 Ambient temperature. Ambient temperature is defined as +23°C.

3.3.5 "g". A “g” is defined as a unit of gravitational force (on earth) to which an object is subjected.