AVIA 230 Quiz 7

AVIA 230 Quiz 7 Liberty University

AVIA 230 Quiz 7: Control of UAS

Covers the Learn material from Module 7: Week 7.

1. are the first steps in the design process and often the most critical to mission success. This is where the objectives of the system are defined and should include end users of the data and/or system.
2. This step is the final paper design and analysis that is done prior to ordering and acquisition of parts and components for the fabrication phase.
3. A ___________ is basically a switch allowing a choice of selection between multiple sets of inputs— one set is routed to the output. In this way, the external pilot may fly the aircraft manually and safely land in the event of a primary CPU failure on an autopilot.
4. The last and final phase of payload development is the _______ testing.
5. An autopilot controller usually operates with both a(n) ________ loop and a(n) ______ loop.
6. A _________ is an advanced error checking method for packet data, dividing the packet data by a cyclic polynomial at each end, and using the remainder once again.
7. Autopilots commonly have the provision for a(n) _____________ to control the aircraft through the command and control data link itself.
8. The GPS receiver must have a lock on at least _______ satellites to obtain a three-dimensional position.
9. Generally ______ dBm is considered a very strong signal, and _______ dBm a very weak one (the more negative, the weaker the signal).
10. Autopilots rely on ________ for primary navigation; _______ is essential to the navigation of almost all unmanned aircraft systems.
11. In the ____________, the civil regulatory authority for the RF spectrum is the Federal Communications Commission (FCC).
12. Data link modems attach to the autopilot to transmit ___________ to the ground station, and receive command and control information from the operator.
13. Which option is not one of the six main steps involved in a payload design:
14. Operators can control an aircraft from halfway around the world using satellite communications, and it is common to do so. The drawback is that:
15. The purpose of the clock on the autopilot is to keep everything
16. testing should also be done on the completed payload system. Typically, __________ testing is done to evaluate the survivability of payload in a harsh vibration environment.
17. _______________ data links are the most common form of communication for unmanned systems.
18. Even if there is a relatively small amount of activity on any side of the data link, there are ____________ being transmitted back and forth.
19. Many autopilots use ______________ to process the navigation information.
20. A detailed ___________- is required to properly assess the performance of the payload.
21. RF signals below ____ MHz usually either follow the terrain of the earth, or are reflected off the earth’s atmosphere to be received at another geographic location;
22. Users of wireless data links should be aware of the signal strength for the link they are operating. One procedure that is beneficial to perform before flight is a
23. Using ____________-, a significant percentage of errors may be fixed at the receiver without having to request the data be re- transmitted.
24. Barometric altimeter and airspeed information are received by pressure
25. testing is one of the most critical aspects to be aware of and understood. First and foremost, the command and control link to the aircraft cannot be compromised.

Set 2

1. This step is the final paper design and analysis that is done prior to ordering and acquisition of parts and components for the fabrication phase.
2. A _________ is an advanced error checking method for packet data, dividing the packet data by a cyclic polynomial at each end, and using the remainder once again.
3. Line of sight communications allow a radio to transmit and receive a signal __________
4. Users of wireless data links should be aware of the signal strength for the link they are operating. One procedure that is beneficial to perform before flight is a
5. __________ and __________ are the first steps in the design process and often the most critical to mission success.
6. This step is the final paper design and analysis that is done prior to ordering and acquisition of parts and components for the fabrication phase.
7. A detailed ___________- is required to properly assess the performance of the payload.
8. Barometric pressure sensors are sensitive enough to measure very small changes in pressure. In fact, some sensors are able to detect a change of pressure over only _____ inches of height change.
9. A ___________ is basically a switch allowing a choice of selection between multiple sets of inputs— one set is routed to the output. In this way, the external pilot may y the aircraft manually and safely land in the event of a primary CPU failure on an autopilot.
10. Data link modems attach to the autopilot to transmit ___________ to the ground station, and receive command and control information from the operator.
11. ________ testing greatly improves the performance of the payload systems and helps ensure their safe and effective operation in the eld.
12. Which option is not one of the six main steps involved in a payload design:
13. Part of the job of the ________ is to manage the radio spectrum in an efficient way, assigning specific frequencies (channels) to users, and regulating their power output.
14. Generally _________ aircraft give longer duration flights and can travel greater distances but lack the maneuverability of
15. Regardless of which loop the controller is focusing on, it cannot do more than _____ basic task(s) at a time.
16. The final test procedure that is unique to UAS testing is the _________________
17. An autopilot controller usually operates with both a(n) ________ loop and a(n) ______ loop.
18. RF signals below ____ MHz usually either follow the terrain of the earth, or are reected o the earth’s atmosphere to be received at another geographic location;
19. Autopilots rely on ________ for primary navigation; _______ is essential to the navigation of almost all unmanned aircraft systems.
20. The purpose of the clock on the autopilot is to keep everything ________________-.
21. in the context of RF signals simply refers to a direct path between one antenna and one or more others.
22. The __________________ functionality of unmanned aircraft systems allows operators to know what is happening on board the aircraft while ying.
23. Barometric altimeter and airspeed information are received by pressure
24. The most common ____________ frequencies are 915 MHz, 2.45 GHz, and 5.8 GHz, all of which are LOS frequencies.
25. Because GPS ____________ are caused by various eects such as passing through dierent layers of the earth’s atmosphere, correction signals are generated by stations at a known location to augment the original information and increase positional accuracy; the distortions may then be subtracted out.