Cockpit Accommodation of the CH139 Jet Ranger Training Helicopter


  1. Meunier, P.
Corporate Authors
Defence R&D Canada - Toronto, Toronto ONT (CAN)
An anthropometric assessment of the CH139 Jet Ranger helicopter was performed to determine the limits of accommodation of the cockpit. Ten subjects were recruited from the pool of students and instructors located at 3 Canadian Forces Flying Training School (CFFTS) in Southport, Manitoba. Each subject underwent a series of test sessions according to seat position (left and right), seat type (normal and low profile), and clothing conditions (summer and winter). The performance elements that were assessed in the cockpit were hand and foot reaches, visibility of flight instruments, cyclic stick authority, and helmet clearance. Since the Jet Ranger cockpit is relatively small, reach to pedals and controls as well as visibility were adequate for all test subjects. On the other hand, larger subjects tend to experience clearance problems, particularly between the helmet and the centre overhead console. Results of the assessment indicate that the low profile seat provides a significant increase in maximum sitting height compared to the regular seat, although the estimated maximum sitting heights are still somewhat below the maximum allowed by the Canadian Forces selection criteria. It is expected that a small percentage of the population, of the order of two to four percent, would be too large for this aircraft.

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CFFTS;Cockpit accommodation;Pilot selection;CH-139 Jet Ranger helicopters;Cockpit compatibility;Selection standards
Report Number
DRDC-TORONTO-TR-2003-005 — Technical Report
Date of publication
01 Mar 2003
Number of Pages
Electronic Document(PDF);CD ROM

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