AC-SYS MC
Multiple choice Fragen zu AC-SYS 3. Semester
Multiple choice Fragen zu AC-SYS 3. Semester
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Lernkarten
The new Boeing 787 Dreamliner has just been certified in the USA according to
According to the practical safety objectives defined by the FAA, minor failure conditions
The Failure Hazard Analysis (FHA) identifies
Many aircraft operators adhere to SOAP (Spectrographic Oil Analysis Program). In this program, oil samples taken from engines installed on aircraft in serviced are periodically analysed to detect traces of iron and other metals. This gives the operators an early warning of abnormal wear which could be due, for example, to a failing bearing, or to external factors such as operating in a dusty environment. This maintenance concept is known as
The noise emission limitations for aircraft certified in Europe are contained in
According to the practical safety objectives defined by the FAA, hazardous failure conditions
Assuming no common cause failure, the combined failure rate of two independent systems is
Aircraft brakes are fitted with brake wear indicator pins. These are checked regularly during aircraft operation to compare brake wear against a specified limit. This maintenance concept is known as
The maximum vertical load applied to the main gear is reached
The modulus of elasticity, or Young's modulus, is equal to
In a wing spar at positive load factor, the maximum shear stress is reached
In an airliner, the maximum wing root bending moment is usually reached:
The interaction of aerodynamic and elastic forces is responsible for
The wing divergence speed can be increased by
The horizontal tail vibrations during a stall manoeuver are known as
Typical advantages of the integral construction method are
The maximum vertical load applied to the nose gear is reached
Ductile materials:
In a wing spar at positive load factor, the maximum tension stress is reached
A static test is successful if the aircraft structure withstands the design limit load
The interaction of aerodynamic and inertia forces is responsible for
The wing flutter speed can be increased by
The control surface vibrations that can occur at very high mach numbers are known as
Typical advantages of the differential construction method are
Gyroscopic loads on the propeller are due to
The shear load on the wing of an aircraft with wing installed engines is maximum
A Fail-Safe structure:
The stroke of an oleo shock absorber depends on:
Brittle materials:
The endurance limit is defined as
To stop fluid from flowing back from the accumulators to the main system in case of a pump failure, hydraulic circuits are fitted with
What type of pump is commonly used in aircraft hydraulic systems?
Which of the following are primary flight controls?
The MCDU is the input device for
What happens in the dilution zone of the combustor?
In the dilution zone the combustion gases are mixed with fresh air to reduce the turbine inlet temperature.
What happens in the secondary zone of the combustor?
In the secondary zone, more air is introduced to complete the combustion process and reduce noxious emissions.
Which aerodynamic loads acting on the wing are dependent of airspeed and why?
The torsion load and the drag forces acting on the wing increase with the square of the airspeed.
Which aerodynamic loads acting on the wing are independent of airspeed, and why?
Wing bending and shear depend only on aircraft mass and load factor
What is the difference between a failure and a failure condition?
A failure is the inability of a system, subsystem or component of perform a function as intended. A failure condition is a condition with an effect on an aircraft and its occupants caused by one or more failures, considering the relevant operational and environmental conditions.
Name at least three possible ways to achieve a risk mitigation.
change design to eliminate hazard/ install safety devices/ install warning devices/ implement special training and procedures
