Which are the design considerations of servomotor actuators of the AFCS?
Range of control
Rate of movement
Accuracy of movement
All are correct
About AFCS modes, choose the INCORRECT option
The modes can be horizontal, lateral and combined
The horizontal mode controls the ROLL of the aircraft
The vertical mode controls the ROLL of the aircraft
The vertical mode controls the PITCH of the aircraft
What of this statements are true?
Triplex Systems use four lanes
In Simplex Systems a failure does not render the system out of service
Triplex Systems make use of voting techniques
Quadruplex Systems do not exist already.
How is corrected the Dutch Roll
With a Yaw Damper System
With a Pitch Damper System
None of the above
With both systems
Dutch Roll
More common in aircraft with swept wing
It appears in light aircrafts flying at low speeds
A phenomenom that can happen when flying in the same parallel as Holland
None is correct
Rate Damping Systems
A. Have more to do with control than stability
B. Have more to do with stability than control
C. Prevent unwanted divergence rates and help to smooth rates to demand
D. B and C are right
The phenomenon called tuck under occurs…
Flying at subsonic speeds
Flying at transonic speeds
Flying at high subsonic speeds
Flying at high subsonic speeds and transonic speeds
Tuck under generates…
Controllable nose up motion
Controllable nose down motion
Uncontrollable nose up motion
Uncontrollable nose down motion
Frequencies of the radar:
1-10 GHz
10-100 GHz
100-1000 GHz
1000-10000 GHz
Which type of wave do radar use?
A. EM(Electro Magnetic)
B. Short wavelength
C. Extremely long wavelength
D. A and B are correct
Kinds of amplifiers:
A. Tube amplifiers
B. Solid state amplifiers
C. Hard amplifiers
D. A and B are right
Which is the meaning of RADAR?
Radio Altimeter to Detect Altitude Risk
Radio Aid to Detection And Ranging
Radio Aid for Distance At Runways
All are false
What affects the total effect of noise?
Antenna noise
Antenna noise + Transmission line noise
Antenna noise + Transmission line noise + Equipment noise
Shorter pulses have...
Lower bandwidth and worse resolution
Lower bandwidth and better resolution
Higher bandwidth and worse resolution
Higher bandwidth and better resolution
Power required is...
Independent of wavelength
A very strong function of R
A linear function of everything else
All above are correct
Which is the standard frequency of an airborne WX Radar
~ 9 GHz
~ 50 GHz
~ 100 GHz
~1 GHz
Some types of antennas are:
A. Isotropic Antenna
B. Directional Antenna
C. A & B are correct
D. A & B are false
Some examples of Parabolic Antenna:
A. Fan-Beam Antenna
B. Offset Antenna
C. A and B are true
D. A and B are false
A disadvantage of an Array radar:
Beam agility
Low loss
Effective radar resource management
Higher cost
Types of clutter
Ground clutter
Rain
Sea clutter
All of them
Factors affecting RCS:
Geometric cross-section
Directivity
Reflectivity
All of them are correct
Which of these sentences is true?
The F-18 has smaller RCS than the F-22
The F-117 has smaller RCS than an insect
Both of them are correct
Both of them are false
Pulse compression technique:
Allows a radar to achieve simultaneously the energy of a short pulse and the resolution of a long pulse
Allows a radar to achieve simultaneously the energy of a long pulse and the resolution of a long pulse
Allows a radar to achieve simultaneously the energy of a short pulse and the resolution of a short pulse
Allows a radar to achieve simultaneously the energy of a long pulse and the resolution of a short pulse
Some methods to reduce RCS are:
Blended wings and fuselage
Swept leading edges
A low-profile ‘blended cockpit’