Day 7 Progress Check Flashcards
Why is mechanical tachometer technology still in use on some small aircraft?
It is simpler and more cost-effective for short distance connections
What role do digital air data computers (DADC) play in modern aircraft?
They process and transmit digital signals from various sensors to the flight deck displays
What is the main function of the transmitter in a DC selsyn system?
To convert mechanical movement into an electrical signal that aligns the indicator pointer
What advantage does a slaved gyro compass system provide over a traditional magnetic compass?
It is unaffected by magnetic deviation and provides more accurate heading information
What is a key characteristic of an autosyn system compared to a selsyn system?
Autosyn systems use electromagnets instead of permanent magnets for both the transmitter and indicator rotors
In a synchroscope, what does the pointer’s movement indicate?
The difference in speed between multiple engines
What is the key purpose of an Angle of Attack (AOA) indicator in an aircraft?
To measure the angle between the wing chord line and the relative wind, indicating potential stall conditions
What safety benefit do synchro systems provide when used for fuel and oil pressure gauges in aircraft?
They prevent the need for long fuel and oil lines inside the cabin, reducing the risk of leaks and fires
How do digital flight deck displays differ from analog displays in terms of signal reception?
They receive input exclusively via a digital data bus without using electric motors
How does an electric tachometer measure engine speed in aircraft?
By using an AC generator mounted on the engine that produces a frequency proportional to engine speed
What distinguishes a digital accelerometer from a mechanical accelerometer in terms of functionality?
Digital accelerometers use solid-state sensors, while mechanical ones rely on inertia-based mechanisms
What is the primary purpose of a vertical speed indicator (VSI) in an aircraft?
To indicate the rate of climb or descent
Why is it important for AOA systems to be integrated with stall warning devices?
To warn the pilot of an impending stall through physical feedback, such as a stick shaker
Why is the use of shielded cables critical in aircraft wiring systems?
To reduce electromagnetic interference (EMI) that could affect instrument accuracy
What is the primary advantage of using remote sensing systems over direct-reading gauges in aircraft?
They allow sensors to be placed in optimal locations while displaying information in the flight deck
