=Paper= {{Paper |id=Vol-2617/paper6 |storemode=property |title=Let’s Fly! An Analysis of Flying FPV Drones Through an Online Survey |pdfUrl=https://ceur-ws.org/Vol-2617/paper6.pdf |volume=Vol-2617 |authors=Dante Tezza,Derek Caprio,Denis Laesker,Marvin Andujar |dblpUrl=https://dblp.org/rec/conf/chi/TezzaCLA20 }} ==Let’s Fly! An Analysis of Flying FPV Drones Through an Online Survey== https://ceur-ws.org/Vol-2617/paper6.pdf
                                   Let’s Fly! An Analysis of Flying FPV
                                   Drones Through an Online Survey

Dante Tezza                                Denis Laesker                             Abstract
University of South Florida                University of South Florida               First-person view (FPV) drones provide an immersive flight
Tampa, FL 33620, USA                       Tampa, FL 33620, USA                      experience for pilots. In FPV flying, the pilot wears a pair of
dtezza@mail.usf.edu                        dlaesker@mail.usf.edu
                                                                                     goggles that display the video feed from the drone in real-
                                                                                     time. This allows them to fly the drone as if they were sitting
                                                                                     on top of it, thus creating an immersive experience simi-
                                                                                     lar to virtual reality and giving the sensation of free flight.
                                                                                     Due to these characteristics, FPV flying is becoming pop-
                                                                                     ular for recreational purposes (e.g. drone racing). In this
Derek Caprio                               Marvin Andujar                            study, we conducted an online survey with 515 FPV pilots
University of South Florida                University of South Florida               to explore their preferences and give human-drone inter-
Tampa, FL 33620, USA                       Tampa, FL 33620, USA                      action researchers an understanding of the FPV commu-
derekc1@mail.usf.edu                       andujar1@usf.edu
                                                                                     nity and how pilots interact with the drones. In this paper,
                                                                                     we present that the majority of pilots prefer acrobatic flight
                                                                                     mode for both racing and freestyle flying. Additionally, we
                                                                                     found that FPV flying introduces users to technical fields
                                                                                     as the majority of the pilots build their drones, even without
                                                                                     having any previous technical background. Lastly, we also
                                                                                     present how pilots prefer to interact with remote controllers.

                                                                                     Author Keywords
This paper is published under the Creative Commons Attribution 4.0 International     Drones, drone racing, first-person view, human-drone inter-
(CC-BY 4.0) license. Authors reserve their rights to disseminate the work on their
personal and corporate Web sites with the appropriate attribution.
                                                                                     action, human-robot interaction
Interdisciplinary Workshop on Human-Drone Interaction (iHDI 2020)
CHI ’20 Extended Abstracts, 26 April 2020, Honolulu, HI, US
© Creative Commons CC-BY 4.0 License.
                                                                                     CCS Concepts
                                                                                     •Human-centered computing → Human computer inter-
                                                                                     action (HCI); User studies;
                                    Introduction                                                      Human-drone interaction research (HDI) can be defined as
                                    Oftentimes we hear people express their desire to fly; the        the study focused on understanding, designing, and eval-
                                    idea of being able to see and explore the world from the          uating drone systems for use by or with human users[14].
                                    skies has fascinated humans for centuries. The Wright             Current human-drone interaction research has focused on
                                    brothers achieved the first successful controlled flight in       developing natural interaction[5], flying user interfaces [7]
                                    1903 [15], and since then, aviation has been evolving and         new control modalities(e.g. brain-controlled drones[11]),
                                    becoming more and more ubiquitous in society. These de-           social drones[3], and even using drones to provide haptic
                                    velopments have led to modern unmanned areal vehicles             feedback for virtual reality environments[9]. Drones that
                                    capable of flying autonomously or being remote-controlled,        broadcast images in real-time have been studied in appli-
                                    these aircraft are commonly referred to as drones. They are       cations like search and rescue and disaster relief [8]. How-
                                    used in a broad range of applications such as photography,        ever, there is a lack of research on the community of pilots
     Figure 1: FPV goggles.         natural disaster response [2], agriculture [12], and drone        who fly FPV recreationally, most likely due to the recency
                                    racing [4]. Drone usage is increasing and is expected to          of the field. The ability to fly a drone with the sensation
                                    continue to do so, the Federal Aviation Administration (FAA)      of being onboard allows the creation of new user experi-
                                    projects that 3.8 million drones will be registered in their      ences, interactions, sports, and novelty drone use cases.
                                    database in the United States alone by 2022 [6]. However,         Therefore, we believe that human-drone interaction (HDI)
                                    drones are remotely operated by a human on the ground             research could benefit from studying the user interaction
                                    and generally lack the ability to provide an immersive expe-      with FPV drones.
                                    rience, which is an important aspect in the remote operation
                                    of robots[1].                                                     In this study, we evaluated the FPV drone community and
                                                                                                      their flight preferences through an online survey completed
                                    Recently, a new type of flying drones, known as first person      by 515 FPV pilots. We surveyed FPV pilots to better un-
                                    view (FPV), has emerged providing users a more immer-             derstand their user experience when flying from a human-
                                    sive experience while flying. In this modality, the drone is      drone interaction perspective. Our contributions in this pa-
                                    equipped with a front-facing camera which transmits live          per are the results of this survey, allowing HDI researchers
Figure 2: FPV pilot controlling a   video to a pair of googles worn by the pilot. This gives the      to evaluate how pilots interact with FPV drones and better
drone.                              pilot the impression that they are sitting on top of the drone    understand their user experience. In this survey, we found
                                    and leads to an immersive experience similar to virtual re-       that the majority of pilots prefer acrobatic flight mode for
                                    ality. FPV flying gives the pilot the sensation of free flight,   both racing and freestyle flying. Additionally, we found that
                                    making it especially popular among drone pilots who enjoy         FPV flying introduces new users to technical fields as the
                                    flying recreationally. Acrobatic flights (known as freestyle)     majority of the pilots build their drones, even without having
                                    and racing competitions are common within the FPV com-            any previous technical background. Lastly, we also present
                                    munity. An example of FPV goggles can be seen in Figure           how pilots prefer to interact with remote controllers.
                                    1, followed by a pilot flying FPV in Figure 2, and a FPV im-
                                    age (displayed in goggles) in Figure 3.


Figure 3: FPV image displayed in
goggles.
Study Design & Methodology                                         Results & Discussion
To understand the FPV drone community and the experi-              FPV Racing and Freestyle
ence of flying FPV drones, we conducted an anonymous               First-person view flying is divided into two major categories
online survey with 51 questions with 515 FPV pilots. The           of flying styles: racing and freestyle. Drone racing is an
survey was administered through Qualtrics and data was             emerging and competitive sport in which pilots fly FPV
collected over a period of four months. Participants were          drones in complex 3D courses against each other, aiming to
required to be at least 18 years old and have experience           be the fastest pilot on the track [4]. Drone racing started as
flying FPV drones. Before completing the survey, partici-          an amateur sport in Australia during the year of 2014 and
pants had to digitally sign an informed consent form. Re-          grew in popularity due to pilots posting racing videos in so-
cruitment was performed solely online and shared on Face-          cial media. Drone racing is significantly more complex than
book , Twitch , Discord , Twitter, and Reddit on groups and        flying non-FPV drones, it requires long practice periods and
channels related to FPV drones. The survey collected data          high level of skills [13]. Freestyle flying is a broader con-
regarding (1) pilots’ backgrounds (e.g. electronics knowl-         cept, as there are no specific rules or competitions for this
edge) and how they impact their current flight experiences,        category. There is no previous formal definition of freestyle
(2) pilots’ flight preferences (e.g. preferred flight modes, re-   flying, therefore, we derive its definition from another ex-
mote controller grips), (3) pilots’ preferences towards equip-     treme activity, freestyle BMX; where its pilots spend their
ment (software and hardware), and (4) how pilots learned           time performing tricks and stunts rather than competing in
how to fly FPV.                                                    races[10]. Analogously, we define freestyle flying as the
                                                                   category where pilots fly FPV drones to explore spaces,
Participants
                                                                   perform tricks and stunts.
A total of 515 FPV pilots completed the survey. Of these
515 participants, 505 (98.06%) participants are male, 5            Our analysis of the 515 FPV pilots show that 43.08% of
(0.97%) are female, and 5 (0.97%) do not identify as either        them fly freestyle only, 8.33%, fly only for racing purposes,
male or female. Additionally, 79 (15.34%) are between the          and 48.57% fly both racing and freestyle. Also, 80% of rac-
ages of 18 and 24, 133 (25.83%) are between the ages of            ing pilots compete at some level, compared to only 13% of
25 and 34, 176 (34.17%) are between the ages of 35 and             freestyle pilots. This is attributable to the more competitive
44, 87 (16.89%) are between the ages of 45 and 54, 34              nature of racing sports. Although there are official FPV rac-
(6.60%) are between the ages of 55 and 64, and 6 (1.17%)           ing leagues which host competitions, no such leagues exist
are 65 years of age or older. Of these same participants,          for freestyle pilots. This is also a plausible explanation for
27 (5.24%) are Hispanic or Latino, 439 (85.24%) are Cau-           why 15% of racing pilots declared to receive some sort of
casian, 2 (0.39%) are African-American, 2 (0.39%) are              sponsorship, as these competitions are often televised and
Black, 13 (2.52%) are Asian, and 32 (6.21%) are something          draw public attention. In contrast, only 3% of freestyle pilots
other than the ethnicity listed above.                             receive sponsorship. We expect that as FPV sports con-
                                                                   tinue to grow in popularity, official freestyle competitions will
                                                                   emerge and it will become more common for freestyle pilots
                                                                   to receive sponsorship.
  Flight Mode        % of Pilots    FPV Flight Modes                                                 that the attitude commanded by the pilot is performed cor-
 Position Hold         0.81%        The characteristics on how a FPV drone responds to pi-           rectly. These characteristics allow racers to better maneu-
    Angle              6.10%        lots input is dependent on the concept of flight modes. This     ver around obstacles on the track, as well as freestylists
  Acrobatic            92.07%       setting can be set on the flight controller and dictates how     to perform stunts that would not be possible in other flight
  Unknown              0.41%        the pilot can interact with the drone. Non-FPV drones are        modes.
    Other              0.61%        capable of many flight modes, including assisted and au-
                                    tonomous modes. However, FPV flying aims to provide the          FPV Remote Controllers
Controller Grip      % of Pilots                                                                     The remote controller (RC) acts as an interface between
                                    pilot with the most control authority over the drone, there-
     Thumb             53.46%       fore there are only two main flight modes that are com-          the pilot and the drone, therefore it is important to under-
     Pinch             20.9.%       monly used:                                                      stand pilots’ preferences when interacting with such de-
     Hybrid            24.80%                                                                        vices. There are two factors that influence how FPV pilots
    Unknown            0.81%                                                                         interact with the RC itself: the form of grip, and RC mode.
                                        • Angle/Stabilized - This is an auto-stabilization mode      There are three main forms of grips in which the pilot holds
   RC Mode           % of Pilots          in which the pilot input command is translated di-         the controller: thumbs, pinch, and hybrid. These are dis-
     Mode 1            6.10%              rectly to aircraft attitude, and the aircraft stabilizes   played in Figures 4 5 6 respectively. Table 1 also shows
     Mode 2            87.40%             itself if the pilot does not send any command. In other    that the majority of pilots (53.46%) prefer to hold their con-
     Mode 3            0.81%              words, the movement in the remote controller sticks        trollers using the "thumb grip", followed by hybrid(24.80%)
     Mode 4            1.02%              is translated to the angle in which the drone flies, and   and pinch (20.9%). However, hybrid and pinch are similar
    Unknown            4.67%              the drone levels itself when the sticks are centered in    grips, and if they are analyzed together, the gap between
                                          the controller.                                            their use and thumb grip is not as large. The form of grip
Table 1: FPV pilots’ preferences.                                                                    can influence the pilot’s interaction with the drone in terms
                                        • Acro/Rate - In this mode, the aircraft does not sta-
                                                                                                     of control latency, accuracy, and comfort. Future studies
                                          bilize itself, and the stick movement is translated to
                                                                                                     could objectively evaluate how each grip mode impacts the
                                          angular velocity to its correspondent axis. The move-
                                                                                                     human-drone interaction.
                                          ment in the remote controller stick dictates how fast
                                          the drone spins on each axis, and in the absence of        There are also four RC modes that dictate how the RC gim-
                                          input, the drone will maintain the current angle in-       bal sticks are translated to drone commands, as shown in
                                          stead of stabilizing itself.                               Figure 7. Our results (see Table 1) shows that a large ma-
                                                                                                     jority of pilots (%87.40) prefer to fly in Mode 2, where the
                                    As shown in Table 1, 474 out of 515 (92%) pilots surveyed        left gimbal translates to throttle and yaw commands, while
                                    selected acro as their main flight mode. Although acro flying    the right gimbal translates to pitch and roll commands.
                                    has a steep learning curve, it provides the highest degree
                                                                                                     STEM Skills Obtained through FPV Drones
                                    of freedom for pilots to control their drone. This mode gives
                                                                                                     FPV drones can be an effective and highly engaging method
                                    the pilot full control over the quad-copter attitude and makes
                                                                                                     to introduce STEM education as most FPV drone pilots are
                                    the drone behavior predictable as the flight controller does
                                                                                                     also involved in building their systems. In fact, 93.40% of
                                    not try to adjust the drone attitude. Instead, it only ensures
                                                                                                     FPV pilots surveyed have built their own drone before. More
                         importantly, despite 147 pilots (28.54% of all participants)
                         declaring not having any prior electronics background, all of
                         them have now built at least one drone and 90 (61.22%) out
                         of the 147 have built 5 or more drones. STEM skills which
                         are developed through building FPV drones include both
                         hardware (e.g. soldering, electronics) and software skills
                         (e.g. compiling software and flashing microprocessors).
                         Other skills can also be learned such as flight dynamics
                         and tuning for multi-rotor aerial vehicles, as well as 3D print-
                         ing. Since the main flight controller software projects are                    (a) Mode 1                     (b) Mode 2

                         open source, they can also be used to learn software engi-
Figure 4: Thumbs grip
                         neering topics. Finally, when pilots were asked to give open
                         tips for beginners, several of them suggested beginners
                         build their own drone so that they know how to fix it when it
                         becomes damaged after eventual crashes.

                         The above results demonstrate that as users start FPV fly-
                         ing for recreational purposes, they also get introduced to
                         STEM topics. Therefore, we suggest that FPV drone pro-
                         grams (e.g. summer camps, demonstrations, events) can                          (c) Mode 3                     (d) Mode4
                         be used to introduce new students to STEM. Our results
                         also demonstrate a small female presence in the FPV com-                     Figure 7: Types of remote controller modes.
                         munity ( 1% of participants). Therefore, we suggest FPV
                         drone programs dedicated to female participants. Increas-          ceive sponsorships as opposed to freestyle pilots. We can
                         ing the number of female FPV pilots could be an effective          also see that the acrobatic flight mode and RC mode 2 are
 Figure 5: Pinch grip
                         approach to increase STEM diversity.                               strongly preferred above all other flight modalities, and that
                                                                                            the majority of pilots prefer to hold their controllers using the
                         Conclusion                                                         "thumb grip." Furthermore, pilots’ survey responses show
                         In summary, FPV flying is growing in popularity as a way to        that the FPV hobby has taught them STEM skills that they
                         provide a more immersive experience to drone pilots, es-           did not have previously.
                         pecially for those who fly recreationally. At the same time,
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