Mhafb CDC 2a051t Vol.1 Aircraft Systems

The antenna is responsible for radiating and collecting radio frequency (RF) signals. It is designed to transmit and receive electromagnetic waves, allowing for the transmission and reception of RF signals. The other options, such as the speaker, amplifier, and microphone, are not specifically designed for this purpose. The speaker is used to produce sound, the amplifier is used to increase the amplitude of electrical signals, and the microphone is used to convert sound waves into electrical signals. Therefore, the correct answer is antenna.

A "HOT-MIC" communication in the intercommunications system does not require the use of a push-to-talk switch to activate the microphone (MIC). This means that the microphone is always active and transmitting sound, allowing for continuous communication without the need to press a button to speak.

The correct answer is 0-50,000 feet. The operational range of the combined altitude radar altimeter is the maximum altitude that the altimeter can accurately measure. In this case, the altimeter can accurately measure altitudes from 0 feet up to 50,000 feet.

Geosynchronous satellites have circular equatorial orbits and appear stationary with respect to a point on Earth. This means that they orbit the Earth at the same rate that the Earth rotates, allowing them to remain fixed above a specific location on the planet's surface. This characteristic makes them ideal for applications such as weather monitoring, communication, and broadcasting, as they can provide continuous coverage of a specific area.

Yaw is a term used in aviation to describe the rotation of an aircraft around its vertical axis. When an aircraft yaws, it moves its nose to the left or right. Therefore, the correct answer "nose left, nose right" accurately describes yaw as it refers to the movement of the aircraft's nose in those directions.

Noise refers to random or unintentional electron movement. In electronic systems, noise can be caused by various factors such as thermal agitation, interference, or imperfections in components. This random movement of electrons can introduce unwanted signals or disturbances into a system, affecting its performance and accuracy. Therefore, noise is the correct term for random or unintentional electron movement.

Resolution refers to the ability of a radar set to indicate very small differences in range where the targets are in the same direction. In other words, it is the radar's capability to accurately distinguish between objects that are very close together in terms of range. A radar system with high resolution will be able to detect and display targets that are very close in range, providing detailed and precise information about their locations. Therefore, resolution is the correct answer in this context.

The correct answer is 30 (00-29). This indicates that there are a total of 30 high-frequency channels that can be selected from the AN/ARC-190 radio set control. The range of channels starts from 00 and goes up to 29, allowing for a selection of 30 different channels.

The correct answer is 30 Hz reference and 30 Hz variable signals. The basic operating principle of the very high frequency omnidirectional range (VOR) system relies on the phase comparison between the 30 Hz reference signal and the 30 Hz variable signal. The VOR system uses two signals, one fixed and one rotating, to determine the aircraft's bearing relative to the ground station. By comparing the phase difference between these two signals, the VOR system can accurately determine the aircraft's position and direction.

The correct answer is 225.000 to 399.975 MHz. This frequency range is commonly used for ultrahigh frequency (UHF) radio systems. It falls within the range of UHF frequencies, which typically range from 300 MHz to 3 GHz. UHF frequencies are commonly used for various applications such as television broadcasting, mobile communication, and wireless data transmission.

The intercommunication system in an aircraft requires power to function properly. This power is provided whenever there is aircraft power, meaning that the aircraft's electrical system is active. However, simply having aircraft power is not enough for the intercommunication system to work. The circuit breakers, which protect the system from electrical overload, must also be closed. This ensures that the electrical current can flow through the system without interruption. Therefore, the correct answer is that the intercommunication circuit breakers are closed.

Stabilators on an aircraft control the pitch and roll. Pitch refers to the up and down movement of the aircraft's nose, while roll refers to the side-to-side movement of the aircraft. Stabilators are typically found on the tail of the aircraft and can be adjusted to control the aircraft's attitude and stability during flight.

Radar navigation systems associated with weapons systems are designed to aid in the accurate release of missiles. These systems use radar technology to track and locate targets, providing crucial information to the computerized systems on board. By utilizing radar navigation, missiles can be launched with precision, increasing their effectiveness and reducing the chances of missing the intended target. Therefore, the correct answer is missiles.

The VHF communication system provides clear-voice, two-way communication using both AM (Amplitude Modulation) and FM (Frequency Modulation) modulation techniques. AM modulation involves varying the amplitude of the carrier wave to transmit information, while FM modulation involves varying the frequency of the carrier wave. Using both AM and FM modulation allows for a more reliable and high-quality communication system.

With single-sideband modulation, the carrier and one sideband are discarded. Single-sideband modulation is a technique used to transmit information using only one sideband of the carrier signal, while the other sideband and the carrier itself are suppressed. This is done to conserve bandwidth and improve efficiency in signal transmission. By discarding the carrier and one sideband, the remaining sideband carries the necessary information for communication.

The intercommunication system audio common ground is used for noise reduction. This means that it helps to minimize or eliminate any unwanted or disruptive sounds that may be present in the audio signal. By providing a common ground reference point, the system can effectively reduce any interference or disturbances that could affect the quality of the audio transmission.

A satellite down converts, amplifies, and up converts the signal it receives before retransmitting it back to Earth. Down conversion is the process of converting the received signal from a higher frequency to a lower frequency for easier processing. Amplification is necessary to strengthen the signal and compensate for any loss during transmission. Finally, up conversion is done to convert the signal back to the original frequency before transmitting it back to Earth. This process ensures that the signal is properly processed and optimized for transmission.

The correct answer is that satellite channels are assigned on the basis of current need and priorities. This means that the allocation of channels is determined by the specific requirements and priorities at a given time. It ensures that the channels are utilized efficiently and effectively based on the immediate needs and priorities of the satellite system. This approach allows for flexibility and adaptability in channel allocation, ensuring optimal performance and resource allocation.

The main purpose of chaff when used as an electronic countermeasure is to confuse radar operators. Chaff is a cloud of small, lightweight metallic or plastic strips that are released into the air. When radar waves hit the chaff, they are reflected back to the radar receiver, creating multiple false targets and making it difficult for radar operators to distinguish between real targets and the chaff. This confusion can disrupt the radar system's ability to accurately track and identify targets, ultimately providing a tactical advantage to the user of the chaff.

The correct answer is articulated. An articulated steering system allows the forklift to have a tighter turning radius and maneuverability in tight spaces. This type of steering uses a pivot point in the middle of the vehicle, allowing the front and rear sections to move independently. This enables the forklift to navigate uneven or rough terrain more easily, making it suitable for adverse conditions.

The longitudinal axis extends lengthwise through the fuselage from the nose to the tail of an aircraft. This axis is responsible for controlling the pitch motion of the aircraft, allowing it to climb or descend. It is also known as the roll axis, as it is used to control the roll motion of the aircraft, allowing it to bank left or right.

The correct answer is flaperons. Flaperons are not part of the F-15 primary flight control system. Ailerons, twin rudders, and stabilators are all control surfaces that are part of the primary flight control system of the F-15. Flaperons, on the other hand, are a combination of flaps and ailerons and are typically found on aircraft with a high aspect ratio wing, but they are not used on the F-15.

The correct answer is stick. The F-16 flight control system (FLCS) stick contains a force-sensing unit that contains transducers in both the pitch and roll axes. This means that the stick can sense the force applied by the pilot in both the forward/backward (pitch) and left/right (roll) directions, allowing for precise control of the aircraft's movements. The force-sensing unit is an important component of the FLCS, as it translates the pilot's inputs into commands that the aircraft's control surfaces can act upon.

Multiplexing refers to the process of transmitting multiple signals over a single channel or pair of wires. In this context, it specifically refers to transmitting many digital signals over a single pair of wires. This technique allows for efficient use of limited resources by combining multiple signals into one, which can then be transmitted simultaneously. By doing so, multiplexing enables increased data transmission capacity and effective communication between different digital systems using a single transmission medium.

The correct answer is manual. This means that the bombing system release option can be equated to a single-selected weapons release when it is done manually. This suggests that the pilot or operator has direct control over the release of the weapons and can manually select which weapons to release.

The correct answer is airborne interrogator-receiver and a surface beacon (UHF range). This is because the TACAN system uses UHF (Ultra High Frequency) range for communication between the airborne interrogator-receiver and the surface beacon. The interrogator-receiver sends out signals to the beacon, which then responds with distance and bearing information to the aircraft. This UHF range allows for accurate and reliable navigation in both military and civil aviation applications.

The stabilized platform is the heart of the F-16 inertial navigation unit (INU). It is responsible for maintaining a stable reference frame for the navigation system, even in the presence of aircraft motion and vibrations. The platform is designed to isolate the sensors from external disturbances, ensuring accurate and reliable navigation data. It plays a crucial role in providing precise position, velocity, and attitude information to the aircraft's computer system, enabling accurate navigation and targeting capabilities.

GPS data provides various information, including the time of day, have-quick synchronization, and correction for in-flight INS alignment. However, it does not provide aircraft identification. This means that while GPS can provide accurate positioning and timing information, it does not directly identify the specific aircraft using the system.

On the combined altitude radar altimeter, an intermediate frequency of 495 kHz can represent seven altitudes. This means that the altimeter is capable of detecting and displaying seven different altitude levels based on the received frequency. Each frequency corresponds to a specific altitude, allowing the pilot or operator to accurately determine their altitude based on the displayed frequency.

When the radio set control switch is set to GUARD, the displayed frequency is 243 MHz.

An antenna coupler is required for high-frequency transmissions to match the impedance of the antenna to the selected frequency. Impedance matching is important because it ensures maximum power transfer between the transmitter and the antenna. If the impedance of the antenna is not matched to the selected frequency, there will be a mismatch and a significant amount of power will be reflected back to the transmitter, resulting in inefficient transmission. Therefore, an antenna coupler is used to adjust the impedance of the antenna to match the selected frequency, allowing for optimal transmission of the center frequency and carrier signal.

The correct answer is rudders. Rudders are aircraft control surfaces that control the movement of an aircraft about the vertical axis and produce the motion known as yaw. Yaw is the side-to-side movement of the nose of the aircraft. By deflecting the rudders, pilots can control the yawing motion and maintain stability during flight.

The frequency-shift principle is used with pulsed radar sets to eliminate echoes from stationary objects. This means that the radar emits short pulses of radio waves and then listens for the echoes. By shifting the frequency of the pulses, the radar can distinguish between moving and stationary objects. This helps in eliminating echoes from stationary objects and allows the radar to focus on detecting moving targets.

A deflection of two dots on the attitude direction indicator glide slope deviation scale indicates that the aircraft is 0.6 degrees off the glide path.

Misalignment of the magnetic azimuth detector during installation can cause an index error. This means that the readings from the detector will not accurately represent the true magnetic azimuth, leading to incorrect navigation or measurement.

The correct answer is 75-bits per second (bps). This data-rate capability refers to the maximum speed at which the Single Integrated Operational Plan terminal can transmit digital teletype data.

The correct answer is the difference between the echo frequency and the local oscillator "beat" frequency. In a radar system, the radar receiver uses a local oscillator to generate a signal that is mixed with the received echo signal. This mixing process produces a beat frequency, which is the difference between the frequencies of the two signals. By measuring this beat frequency, the receiver can determine the frequency of the echo signal, which is proportional to the distance of the target. Therefore, the intermediate frequency produced by the radar receiver is the difference between the echo frequency and the local oscillator "beat" frequency.

The total weight of a pallet of cargo secured with side nets and top net and not exceeding 96 inches in height is 10,355 pounds.

When the frequency from a Doppler radar set decreases, it indicates that the target is moving away from the set. This is because the frequency of the waves is directly related to the relative motion between the radar and the target. As the target moves farther away from the set, the distance between them increases, resulting in a decrease in frequency. Therefore, the correct answer is that the distance between the target and set is increasing.

The functions of a digital store management system are initiated by the operator. This means that the operator is responsible for starting and controlling the various functions of the system. The operator is the one who interacts with the system and initiates actions such as adding or removing products, updating inventory, and generating reports. The operator plays a crucial role in ensuring the smooth operation of the digital store management system.

Inertial navigation system integrators can be categorized into two types: analog and digital. Analog integrators process the input signals using continuous electrical signals, while digital integrators process the input signals using discrete numerical values. Both types of integrators are used in inertial navigation systems to calculate and integrate the inputs of acceleration and directional data, allowing for accurate navigation and positioning.

True course (TC) is an expression of direction in aerial navigation. It refers to the angle between the true north and the direction of the aircraft's path. TC is important for pilots to accurately navigate and maintain their desired heading during flight. By knowing the TC, pilots can make adjustments to their heading based on wind direction and speed, ensuring they stay on course and reach their intended destination.

The MLS approach azimuth transmitter is used to guide the aircraft during an instrument approach to the active runway. The MLS system provides precise azimuth and elevation guidance to the pilot, allowing them to maintain the correct approach path. The transmitter sends signals to the aircraft's receiver, which displays the information on the instrument panel. This helps the pilot align the aircraft with the runway and descend at the correct angle for a safe landing. The MLS approach azimuth transmitter is an essential component of instrument landing systems used in aviation.

Mode 1 is used for security identity.

The angle of attack (AOA) transmitter uses a movable sensing element that routes air into two synchro cavities to produce its output. This sensing element detects the angle at which the aircraft is approaching the airstream, and the air flow is directed into the synchro cavities to generate the transmitter's output. This allows the AOA transmitter to provide accurate information about the aircraft's angle of attack.

When completion of an operation on a data bus starts the next operation, the bus is said to function asynchronously. This means that the operations on the bus are not synchronized or coordinated with each other. Each operation can start and finish independently of the others, allowing for greater flexibility and potentially faster processing times.

In an embedded global positioning system, a Kalman filter is used to model errors in velocity and position. The Kalman filter is a mathematical algorithm that combines measurements from different sensors to estimate the true state of a system. In the case of a GPS system, the Kalman filter takes into account the measurements of velocity and position, along with other factors such as acceleration and time, to provide a more accurate estimation of the actual velocity and position of the object being tracked.

Altitude digitizers are the equipment that transmits the altitude of the airborne identification friend or foe/selective identification features (IFF/SIF). These digitizers are responsible for converting the analog altitude data into digital form, allowing it to be transmitted and processed by other systems. Encoding scalers and decoding scalers are not specifically designed for transmitting altitude data, and an altitude coder is not a commonly used term in this context. Therefore, altitude digitizers are the correct answer for identifying the equipment used for transmitting airborne altitude information.

The angle of attack of an aircraft wing is the angle between the chord line and the direction of relative wind. The chord line is an imaginary line that connects the leading edge to the trailing edge of the wing. The relative wind is the airflow that is encountered by the wing as the aircraft moves through the air. The angle of attack is important because it determines the lift generated by the wing. A higher angle of attack can increase lift but may also lead to increased drag and potential stall conditions.

The main purpose of the air data computer (ADC) is to produce reference data for use by almost all other aircraft systems. This means that the ADC collects and processes data related to airspeed, altitude, and other important parameters, and provides this information to various systems on the aircraft, such as the autopilot, navigation systems, and flight instruments. By providing accurate and reliable reference data, the ADC helps ensure the safe and efficient operation of the aircraft.