AERN 45350 Avionics Name: _______________________________ 1 | P a g e Homework Set One (40 Points) Due: 25 September 2015 General Instructions: Answer the following questions, submitting your answers on Blackboard. SHOW YOUR WORK on any math problems. Consider the following voltage signal: V t 12sin377t 1. What is the peak voltage of the signal [Volts]? 2. What is the angular frequency [rad/sec]? 3. What is the frequency of the signal [Hz]? 4. What is the period of the signal [sec/cycle]? In a heterodyne receiver, the intermediate frequency of the receiver is 21.4 MHz. 5. What is the local oscillator frequency (f1) if the tuned frequency (f2) is 120.9 MHz? 6. If the local oscillator frequency (f1) is 145.7 MHz, what is the tuned frequency (f2)? The gain of a power amplifier is 5. 7. If 30W are coming in, what is the power going out? 8. What is the gain in decibels (dB)? The attenuation of a voltage attenuator is 10. 9. If 120V are coming in, what is the voltage going out? 10. What is the loss in decibels (dB)? 11. What is the component of the ILS that provides the extended centerline of the runway? 12. What is the component of the ILS that provides vertical guidance to the runway? 13. If the aircraft is on the correct trajectory, the airplane will arrive at the outer marker on the ILS corresponding to intercepting what? 14. If the aircraft is on the correct trajectory, the airplane will arrive at the middle marker on the ILS corresponding to reaching what? 15. All marker beacons transmit at what frequency? 16. Why doesn’t this cause problems (all marker beacons transmitting on the same frequency)? 17. What are the four components to an ILS? 18. What is the most common ILS category? 19. Which ILS category requires aircraft with the “auto-land” feature? 20. An attenuator leads to a power ratio of 0.5. What is that in decibels (dB)?

## AERN 45350 Avionics Name: _______________________________ 1 | P a g e Homework Set One (40 Points) Due: 25 September 2015 General Instructions: Answer the following questions, submitting your answers on Blackboard. SHOW YOUR WORK on any math problems. Consider the following voltage signal: V t 12sin377t 1. What is the peak voltage of the signal [Volts]? 2. What is the angular frequency [rad/sec]? 3. What is the frequency of the signal [Hz]? 4. What is the period of the signal [sec/cycle]? In a heterodyne receiver, the intermediate frequency of the receiver is 21.4 MHz. 5. What is the local oscillator frequency (f1) if the tuned frequency (f2) is 120.9 MHz? 6. If the local oscillator frequency (f1) is 145.7 MHz, what is the tuned frequency (f2)? The gain of a power amplifier is 5. 7. If 30W are coming in, what is the power going out? 8. What is the gain in decibels (dB)? The attenuation of a voltage attenuator is 10. 9. If 120V are coming in, what is the voltage going out? 10. What is the loss in decibels (dB)? 11. What is the component of the ILS that provides the extended centerline of the runway? 12. What is the component of the ILS that provides vertical guidance to the runway? 13. If the aircraft is on the correct trajectory, the airplane will arrive at the outer marker on the ILS corresponding to intercepting what? 14. If the aircraft is on the correct trajectory, the airplane will arrive at the middle marker on the ILS corresponding to reaching what? 15. All marker beacons transmit at what frequency? 16. Why doesn’t this cause problems (all marker beacons transmitting on the same frequency)? 17. What are the four components to an ILS? 18. What is the most common ILS category? 19. Which ILS category requires aircraft with the “auto-land” feature? 20. An attenuator leads to a power ratio of 0.5. What is that in decibels (dB)?

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During deployment processing, soldiers undergo medical screening.After a wait, each soldier see same dicaltechnician who reviews his or her records.If the records review shows no problems—the soldier is physically qualified to deploy—then the soldier departs to the next step in deployment processing.It he records do reveal a potential medical issue,the soldier instead sees a doctor,who assesses the soldier’s condition and determines both deployability and for those who are medically disqualified, treatment needs.In rare cases ,the doctor in itiate a medical board to evaluate the soldier for retention in the military. Currently, 80 soldiers per hour arrive for deployment screening,and 80% of them pass there cords review.On average,20 people are waiting for the medical records review,which takes 6 minutes. When the records review indicates a soldier must see a doctor,the soldier reports to a waiting room,where an average of 8 soldiers are waiting. After a wait,the soldier sees a doctor, who reviews the soldier’s condition and either approves the soldier for deployment(75%of the time) or disapproves deployment and conducts a morein-deptxeam to determine treatment(20%of the time)or the need for a medical board(5%ofthetime).Each doctor’s exam takes,on average,6minutes if the solider is medically able to deploy(the doctor pretty much replicates the records review),15 minutes if the soldier requires some kind of treatment,and 30 minutes in those rare cases that require the doctor to initiate a medical review board. Assume the process is stable;that is,average inflow rate equals average outflow rate.[Finally,thisisNOTaqueuingproblem.] a. On average,how long does a soldier spend in the deployment process?

## During deployment processing, soldiers undergo medical screening.After a wait, each soldier see same dicaltechnician who reviews his or her records.If the records review shows no problems—the soldier is physically qualified to deploy—then the soldier departs to the next step in deployment processing.It he records do reveal a potential medical issue,the soldier instead sees a doctor,who assesses the soldier’s condition and determines both deployability and for those who are medically disqualified, treatment needs.In rare cases ,the doctor in itiate a medical board to evaluate the soldier for retention in the military. Currently, 80 soldiers per hour arrive for deployment screening,and 80% of them pass there cords review.On average,20 people are waiting for the medical records review,which takes 6 minutes. When the records review indicates a soldier must see a doctor,the soldier reports to a waiting room,where an average of 8 soldiers are waiting. After a wait,the soldier sees a doctor, who reviews the soldier’s condition and either approves the soldier for deployment(75%of the time) or disapproves deployment and conducts a morein-deptxeam to determine treatment(20%of the time)or the need for a medical board(5%ofthetime).Each doctor’s exam takes,on average,6minutes if the solider is medically able to deploy(the doctor pretty much replicates the records review),15 minutes if the soldier requires some kind of treatment,and 30 minutes in those rare cases that require the doctor to initiate a medical review board. Assume the process is stable;that is,average inflow rate equals average outflow rate.[Finally,thisisNOTaqueuingproblem.] a. On average,how long does a soldier spend in the deployment process?

6+0.75*6+.2*15+.05*30 = 15 miutes     Timeindeploymentsystem:15 (minutes)