Short answer

Designers of crewed operational stations must ensure that control interfaces are within optimal ergonomic zones and that seating provides adequate support to mitigate fatigue and maintain performance.

Field: Human Factors
Source: Asian Journal of Medical Sciences (2021)
Method: Observational study and biomechanical analysis
Sample: 90 participants
Evidence: Strong effect

The placement of controls and the design of the gunner's seat in the T-90S tank do not align with optimal anthropometric and biomechanical principles, potentially compromising crew performance and comfort. This human factors research insight is drawn from a 2021 study published in Asian Journal of Medical Sciences. Using Observational study and biomechanical analysis with 90 participants, researchers explored how this design variable affects real-world outcomes. The key design takeaway: Designers of crewed operational stations must ensure that control interfaces are within optimal ergonomic zones and that seating provides adequate support to mitigate fatigue and maintain performance.

Study

Human FactorsHigh ImpactStrong effect

Gunner station controls in T-90S tanks fall outside optimal visual and biomechanical ranges, impacting crew efficiency.

Asian Journal of Medical Sciences · 2021

Key Findings

01The gunner station's sighting control handle is positioned outside the recommended optimal vortex angle (±15°) in both vertical and horizontal planes.
02Hand grip strength decreases significantly with extended operation time.
03The gunner seat is not designed according to the anthropometric dimensions of the crew members.

Application

Design takeaway

How to apply

When designing any control interface or workstation, conduct thorough anthropometric and biomechanical analyses to ensure optimal placement and fit for the intended user group. Test for performance degradation over extended use periods.

Project actions

01When evaluating existing designs, use objective measurements for control placement and user posture.
02Incorporate subjective feedback on comfort and fatigue alongside objective performance data.

Method & Evidence

AimTo analyze the ergonomic design of the gunner's station in the T-90S tank, specifically focusing on the seat and visual sighting system, to identify design limitations and their impact on crew biomechanics, comfort, and operational efficiency.

MethodObservational study and biomechanical analysis

ProcedureThe study involved collecting anthropometric data of gunners, measuring dimensions of the gunner seat and sighting system, and analyzing biomechanical responses (force and angles) during operation. Comfort and discomfort levels were also assessed.

Sample90 participants

ContextArmoured combat vehicle (ACV) - Tank T-90S gunner station

Variables

IV["Operation time","Control handle position relative to optimal angles","Seat design relative to anthropometrics"]

DV["Hand grip strength","Crew efficiency/performance (implied)","Musculoskeletal discomfort"]

CV["Participant demographics (age, stature, weight)","Type of combat vehicle (T-90S)","Specific workstation (gunner station)"]

Strengths & Limitations

Strengths

+Addresses a critical but under-researched area in military equipment design.
+Combines anthropometric, biomechanical, and subjective comfort measures.

Limitations

The sample size was limited to male gunners, and the study was conducted on a specific model of tank, which may limit generalizability.

Reliability & validity

The study's validity is supported by objective measurements of control placement and biomechanical responses. Reliability could be enhanced by using standardized protocols for data collection and ensuring consistent measurement tools.

Think critically

How might the long-term effects of such ergonomic deficiencies impact crew retention and overall military readiness?

Design Principles

"Operator performance and well-being are maximized when workstation design aligns with anthropometric data and biomechanical capabilities, minimizing deviations from natural postures and reducing physical strain."

Understanding the human factors involved in operating complex machinery like combat vehicles is crucial for enhancing crew effectiveness and reducing physical strain. Poor ergonomic design can lead to decreased operational speed, increased error rates, and long-term musculoskeletal issues for personnel.

What This Means for Your Design

The controls and seat in the T-90S tank's gunner area aren't designed very well for the people using them, making it harder and more tiring to do their job effectively.

How to use in your project

1.Use this study to justify the need for ergonomic analysis in your own design project, especially if it involves user interaction with controls or workstations.

Add to My Project

Quick Cite

Paragraph starter

The ergonomic design of the gunner station in the T-90S tank presents significant challenges, with control handles positioned outside optimal visual and biomechanical ranges and a seat not tailored to user anthropometrics. This leads to a measurable decrease in operator grip strength over time, indicating potential compromises in operational efficiency and increased risk of musculoskeletal discomfort, as demonstrated by Sinha et al. (2021).

Source

Asian Journal of Medical Sciences

Ergonomics analysis of gunner station of armoured combat vehicle (ACV)- Tank T 90S with special reference to seat, visual sighting system and musculoskeletal discomfort: A pilot study

journal · 2021

View source

Questions About This Research

What does the research say about gunner station controls in t-90s tanks fall outside optimal visual and biomechanical ranges, impacting crew efficiency?: Designers of crewed operational stations must ensure that control interfaces are within optimal ergonomic zones and that seating provides adequate support to mitigate fatigue and maintain performance. Evidence: Asian Journal of Medical Sciences (2021).
Why does "Gunner station controls in T-90S tanks fall outside optimal visual and biomechanical ranges, impacting crew efficiency." matter for design?: Understanding the human factors involved in operating complex machinery like combat vehicles is crucial for enhancing crew effectiveness and reducing physical strain. Poor ergonomic design can lead to decreased operational speed, increased error rates, and long-term musculoskeletal issues for personnel.
How can designers apply this research?: Designers of crewed operational stations must ensure that control interfaces are within optimal ergonomic zones and that seating provides adequate support to mitigate fatigue and maintain performance.
What were the main findings?: The gunner station's sighting control handle is positioned outside the recommended optimal vortex angle (±15°) in both vertical and horizontal planes.. Hand grip strength decreases significantly with extended operation time.. The gunner seat is not designed according to the anthropometric dimensions of the crew members.
What research method was used?: Observational study and biomechanical analysis with 90 participants.
How strong is the evidence?: Evidence strength is rated Strong effect, based on a 2021 journal from Asian Journal of Medical Sciences.
What should I do differently in my next project?: When designing any control interface or workstation, conduct thorough anthropometric and biomechanical analyses to ensure optimal placement and fit for the intended user group. Test for performance degradation over extended use periods.
What are the limitations?: This was a pilot study, and the findings may not be generalizable to all combat vehicles or crew demographics. The study focused on male gunners only.