Archives For The human machine interface

Air France Tail plane (Image Source: Agencia Brasil CCLA 2.5)

Requirements completeness and the AF447 stall warning

Reading through the BEA’s precis of the data contained on Air France’s AF447 Flight Data Recorder you find that during the final minutes of AF447 the aircrafts stall warning ceased, even though the aircraft was still stalled, thereby removed a significant cue to the aircrew that they had flown the aircraft into a deep stall.

Continue Reading…

One of the areas of human factors in design is the physical layout of a seated workstation or control console to suit the functional reach capabilities of the user population. Should be simple right? Wrong.

Continue Reading...

Good and bad in the design of an Oliver Hazard Perry class frigates ECS propulsion control console HMI.

Continue Reading...

A small question for the ATSB

According to the preliminary ATSB report the crew of QF32 took approximately 50 minutes to process all the Electronic Centralised Aircraft Monitor (ECAM) messages. This was despite this normal crew of three being augmented by a check captain in training and a senior check captain.

Continue Reading…

Because they have typically pitch unity ratios (1:1) scales, aircraft primary flight displays provide a pitch display that is limited by the vertical field of view. This display can move very rapidly and be difficult to use in unusual attitude recoveries becoming another adverse performance shaping factor for aircrew in such a scenario. Trials by the USAF have conclusively demonstrated that an articulated style of pitch ladder can reduce disorientation of aircrew in such situations.

Continue Reading...

Recent work in complexity and robustness theory for engineered systems has highlighted that the architecture with which these systems are designed inherently leads to ‘robust yet fragile’ behavior. This vulnerability has strong implications for the human operator when he or she is expected to intervene in response to the failure of system.

Continue Reading...

The right attitude

27/05/2011

How the design of the Apollo Command Module Attitude Reference Indicator illustrates the importance of cultural cliches or precedents in coordinating human and software behaviour.

Continue Reading...