## 3 Results
* Geofence and emergency response mechanisms: UAF successfully demonstrated a parachute deployment system for the S900 hexacopter. The system was tested a total of three times over the course of the flight campaign, with each resulting in a successful chute deployment and UAS recovery. This capability provides valuable options when a UAS either exceeds the boundaries of a geofence due to extreme weather (wind) conditions, experiences a navigation malfunction, or must react immediately to an 'All Land' command supporting an emergency scenario. The parachute system supports manual commands and can automatically deploy at dangerous UAS attitudes or for a breach of a geofence. In the area of operational methods and procedures, UAF tackled several important areas, which proved that the feasibility of various enabling processes was necessary for a safe BVLOS flight. UAF engaged in a series of venues, which then challenged the UTM system and our ability to utilize it. The primary focus for scenarios included: (1) altitude stratified operations; (2) Extended Visible-Line-Of-Sight (EVLOS) operations; and (3) altitude stratified EVLOS operations. Additionally, UAF implemented scenarios enabling: (4) dynamic replanning; (5) response to alerts from the UTM system; and (6) implementation of contingencies (e.g., sudden need for RTB). * Multiple UAS: UAF conducted numerous mission sets involving up to five UAS flying simultaneously. This involved several scenarios, including combinations of altitude-stratified local operations and altitude-stratified EVLOS operations. The missions utilized several launch/recovery locations and demonstrated both fully centralized C2 of flight operations utilizing a single UTM operator for all UAS, as well as geographically distinct flight operations (separated by 35+ miles) with two sets of UTM operators providing simultaneous centralized C2 over local UAS operations. * UTM architecture: UAF employed a centralized approach to the UTM system using a single team member as the interface to the UTM system, with the UTM POC orchestrating the overall flight operations in close coordination with the flight director. As the missions included multiple simultaneous UAS (and crews/locations), the flight director was required to closely coordinate flight objectives and sequencing with the UTM POC in advance, so that flight boundaries and missions could be constructed, tested, deconflicted, and submitted prior to the flight. * UTM response: While UAF did not begin with the concept of having the UTM system embedded with each flight crew, we did work with the NASA human factors team to find ways to gradually introduce the UTM system displays into the crews' equipment and incorporate this into their cross-check. We found that the crews were largely able to assimilate the UTM into their accepted procedures over time, first acknowledging audio warnings, then digesting the visual indications of flight boundaries and other UAS and aircraft in the area. Some crews became proactive in checking their flight boundaries with respect to other simultaneous flights prior to the scheduled take off. TCL3 demonstration outcomes: UAF successfully conducted numerous flights involving 4-5 UAS simultaneously, to include tightly integrated altitude-stratified operations and dynamic airspace reallocation to support simulated emergency/high-priority operations. Technical accomplishmentsincluded: (1) numerous successful BVLOS automated landings using integrated laser altimeter/RTK systems (see video); (2) a terrain-following flight using the same as before; (3) demonstrated automated DAA using ADS-B technology; (3) UAF acquisition and successful first use of Echodyne MESA-SRR/DAA portable radar units for ground-based noncooperative DAA; and (4) successful integration of the parachute recovery system into the emergency avoidance scenario. UAF also made significant progress in improving the use of the computer-communications equipment architecture to satisfy NASA's requirement for constant internet connectivity of operations.