Accession Number : ADP006398

Title :   Helicopter Integrated Helmet Requirements and Test Results,

Corporate Author : MESSERSCHMITT-BOELKOW-BLOHM G M B H MUNICH (GERMANY F R) HELICOPTER DIV

Personal Author(s) : Boehm, H.-D. ; Schreyer, H.

Report Date : DEC 1991

Pagination or Media Count : 17

Abstract : A modern integrated helmet (IH) consists out of two Image Intensifier Tubes (IIT) and two Cathode Ray Tubes (CRT) with an optical system including combiners to present the images binocular. Additional symbology can be superimposed to the CRT- or IIT-image. An IH is a further development of a Helmet Mounted Display (HMD). A Helmet-Mounted-Sight (HMS) can steer a sensor platform with a thermal camera or an air-to-air missile system. The main helicopter (HC) requirements of such a system are: (1) human factors (2) optimized day, twilight and night optical modules (3) large exit pupil, good transmission of the optical path and a large adjustment range (4) fit of helmet including optimized centre of gravity(CG) and weight (5) good geometrical resolution / Modulation Transfer Function (MTF) with a large Field of View (FOV) (6) high focussing range of the IIT and a good S/N ratio below 1 mLux (7) CRT automatic brightness and contrast control (8) flight symbology presentation for one or two eyes (9) good static and dynamic HMS-accuracy with a large Head Motion Box (HMB) (10) NBC and Laser protection compatibility MBB and the Army Corps have made in this year ground and flight trails with an Integrated Helmet and a HMS on a PAH 1 respectively a BK 11 7 helicopter. The paper will present IH requirements for HC application and some test results.

Descriptors :   *NIGHT SIGHTS, *OPTICAL IMAGES, *IMAGE INTENSIFIERS(ELECTRONICS), AIR TO AIR MISSILES, CAMERAS, CATHODES, HELICOPTERS, HELMETS, LASERS, PATHS, PLATFORMS, RATIOS, TRANSFER FUNCTIONS, HUMAN FACTORS ENGINEERING, HELMET MOUNTED DISPLAYS.

Subject Categories : Optical Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE