Accession Number : AD0917791

Title :   Hot Line/Helmet Display Flight Test Program.

Descriptive Note : Technical rept.,

Corporate Author : HONEYWELL SYSTEMS AND RESEARCH CENTER MINNEAPOLIS MN

Personal Author(s) : Knight, A. W. ; Ramlo, O. H.

Report Date : NOV 1973

Pagination or Media Count : 76

Abstract : The Hot Line/Helmet Display flight test demonstrated that the concept of using the Helmet Mounted Sight/Display (HMS/D) for a gunsight is feasible and can be considered as an alternate display if the conventional Head-Up Display (HUD) is not available. The flight test again demonstrated that the Hot Line Gun Sight (HLGS) is a viable gunsight concept. This demonstration is based on limited flight test data, including five firing missions flown, which resulted in two FIGAT targets shot down. When compared with the conventional HUD, some advantages are obtained including: (1) greater translational flexibility to see around obstacles; (2) greater vertical field of view; and (3) HMS/D available for other weapon delivery and avionics purposes. These advantages are offset by some disadvantages that include: (1) limited eye relief and HMD/ cable mass imbalance can cause loss of display under high g due to helmet shift on the pilot's head; (2) shift in sight alignment of generally less than + or - 3 mils due to transformation errors from various sources is disconcerting but probably consistent with the overall sighting error budget for the system; (3) sight accuracy is dependent on the quality of the pilot's boresight prior to use; and (4) cabling to helmet is not as reliable as stationary aircraft cabling.

Descriptors :   *GUN SIGHTS), *DISPLAY SYSTEMS), (*HELMETS, (*OPTICAL SIGHTS, FLIGHT TESTING, ROLL, FLIGHT CONTROL SYSTEMS, ACCURACY, ANGLES, TRACER AMMUNITION, PILOTS, STABILIZATION SYSTEMS, GUN SIGHT CAMERAS, PITCH(MOTION), YAW, AVIONICS, DIGITAL COMPUTERS, INERTIAL NAVIGATION, ACCELERATION, CONTROL PANELS, FIRING TESTS(ORDNANCE), ALIGNMENT, POWER SUPPLIES, LOW LIGHT LEVELS, VISORS, VISIBILITY, FEASIBILITY STUDIES, BORESIGHTING, JET FIGHTERS.

Subject Categories : Optical Detection and Detectors
      Fire Control and Bombing Systems
      Protective Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE