HGU-68/P U.S. Navy Tactical Aircrew Helmet

The HGU-68/P Tactical Aircrew (TACAIR) helmet is designed by Gentex

to meet the requirements of the U.S. Navy and U.S. Marine Corps in today’s

High-G environment.

The TACAIR helmet is equipped with a single visor system qualified at

600 KEAS (knots equivalent airspeed) in accordance with MIL-H-85047A.

The TACAIR helmet integrates with the latest advances in technology to

provide improved comfort, stability, retention and protection for military

aircrew personnel. The helmet frontal opening is cut back in the temple

regions to provide maximum peripheral vision.

FSC# 27541

Transaero, inc.

35 Melville Park Road, Suite 100

Melville, NY, USA 11747

T 631.752.1240 F 631.752.1242

transaeroinc.com

6/09

631.752.1240

transaeroinc.com

Standard configuration

Shell

The helmet shell is a rigid composite made of pressure

molded, laminated graphite and nylon, Graphlon®.

The shell is dark aircraft green using a polyurethane

paint system. A black leather edgeroll covers a soft foam

core around the entire periphery of the shell. Pile fastener

fabric is cemented inside the earcup regions to attach

the earcups.

Liner

A styrofoam energy absorbing liner is the primary impact

attenuation medium. A preformed Thermoplastic Liner

(TPL®) provides an easily fitted, lightweight, comfortable

custom lining.

The TPL consists of multiple layers of thermoplastic

which have been formed to create protrusions that

partially collapse when heated to conform to the contour

of the head. The layers are lined with a removable/laun-

derable foam and cotton polyester cover.

An optional helmet comfort liner, the X Liner ®, is available.

Integrated Chin/Nape Strap

The chin/nape strap is a unique, one-piece assembly

threaded through the helmet and adjusts at the chin

strap. Cross straps threaded through the nape strap

pad adjust simultaneously with the chin strap to provide

a snug yet comfortable fit ensuring helmet stability and

retention. The chin/nape assembly is made of nylon

webbing and features chin and nape strap pads covered

with leather. Sliding clamps are installed on the left and

right nape straps at the shell slots to allow individual

adjustment of the nape straps if desired.

600 Knot Lightweight Visor

A single visor system provides the lowest possible profile

to prevent canopy interference. The visor lock is located

left of center to further enhance this low profile. A latch

system is incorporated at the end of the visor lock guide

to allow quick change of visors before flight to meet

specific mission requirements. The neutral gray, abrasion

resistant, polycarbonate visor is standard equipment.

Clear, gradient, high contrast, and laser attenuating

visors are available as spares. A leather visor cover is

provided. The track visor system may be removed and

replaced with a bungee style visor to accommodate an

ANVIS Night Vision Goggles mount.

Communications

The communications consist of the CX-4708A/AIC cord

(modified with extended length pins), H-87B/U earphones,

lightweight tapered earcups, custom leather earpads,

earphone holders, and earcup spacer pads. The leather

earpads enhance helmet fit providing the “glove fit” feel.

Oxygen Mask Bayonet Receivers

Lightweight bayonet receivers are provided to reduce

weight and profile. They have been blackened to blend

with color scheme and consist of jaw/receiver assembly,

mounting screws, lock washers, and backplates. The

receivers are individually fitted during the helmet fitting

process.

Minimum performance requirements

Impact Energy Attenuation

The helmet shell/styrofoam liner/TPL limits the

acceleration imparted to a test headform to 400G

at an input energy of approximately 35 foot pounds.

Windblast

The helmet assembly is designed not to rise, loosen,

or show evidence of material failure when exposed

to 600 KEAS (knot equivalent airspeed) +/– 20

KEAS at the altitudes:

• Head On/Head Up

• 45° Starboard/Head Up

• Head On/Tilted 45° Aft

• Rotated 45° Port/Tilted 45° Aft

Sound Attenuation

Frequency

(Hertz) 125 250 500 1000 2000 3150 4000 6300 8000

Decibels 12 9 20 24 27 41 43 48 46

When tested in accordance with ANSI S12.6-1984,

the HGU-68/P conforms to the sound attenuation

values specified above.