An unmanned aerial system (UAS) including a sonotube deployable multicopter (SDM) having a plurality of rotors for propulsion, a plurality of extension arms, and a central pivot device. Each extension arm supports at least one of the plurality of rotors. The central pivot device supports the plurali
An unmanned aerial system (UAS) including a sonotube deployable multicopter (SDM) having a plurality of rotors for propulsion, a plurality of extension arms, and a central pivot device. Each extension arm supports at least one of the plurality of rotors. The central pivot device supports the plurality of extension arms radially extending from the central pivot device. Pivotal movement of a first arm-support structure of the central pivot device relative to a second arm-support structure of the central pivot device rotates a first pair of the plurality of extension arms in unison relative to a second pair of the plurality of extension arms. The pivotal movement is biased to rotate the plurality of extension arms from a compact configuration to an expanded configuration while the UAS is airborne. The SDM configured to be held inside a sonoshell in the compact configuration.
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1. A sonoshell deployable multicopter (SDM), comprising: a plurality of rotors configured to generate propulsion for the SDM,a plurality of extension arms, wherein each extension arm supports at least one of the plurality of rotors; anda central pivot device supporting the plurality of extension arm
1. A sonoshell deployable multicopter (SDM), comprising: a plurality of rotors configured to generate propulsion for the SDM,a plurality of extension arms, wherein each extension arm supports at least one of the plurality of rotors; anda central pivot device supporting the plurality of extension arms radially extending from the central pivot device, wherein pivotal movement of a first arm-support structure of the central pivot device relative to a second arm-support structure of the central pivot device rotates a first pair of the plurality of extension arms in unison relative to a second pair of the plurality of extension arms, wherein the pivotal movement is biased to rotate the plurality of extension arms from a compact configuration to an expanded configuration while the SDM is airborne,wherein the SDM is configured to be deployable from a sonoshell, andwherein each pair of arms in the first pair and second pair of the plurality of extension arms is axially aligned with one another in the compact configuration. 2. The SDM of claim 1, wherein the first pair of the plurality of extension arms are fixed to the first arm-support structure and the second pair of the plurality of extension arms are fixed to the second arm-support structure. 3. The SDM of claim 1, wherein each of a first extension arm and a second extension arm of the plurality of extension arms extends in opposed directions from the central pivot device, wherein the first extension arm and the second extension arm extend along a mutual longitudinal axis in both the compact configuration and the expanded configuration. 4. The SDM of claim 3, wherein the first extension arm and the second extension arm are formed together as a continuous structure extending through the central pivot device. 5. The SDM of claim 1, wherein the first pair of the plurality of extension arms extend in opposed directions away from the first arm-support structure along a first mutual longitudinal axis and the second pair of the plurality of extension arms extend in opposed directions away from the second arm-support structure along a second mutual longitudinal axis. 6. An unmanned aerial system (UAS), comprising: a sonoshell configured to be deployed from an airborne vehicle, wherein the sonoshell is configured with a hollow inner chamber for holding therein a sonoshell deployable multicopter (SDM) in a compact configuration, wherein the SDM is biased to expand from the compact configuration to an expanded configuration once released from the sonoshell while airborne, wherein the sonoshell includes a release mechanism contained therein, wherein the release mechanism includes a chute latch and an SDM latch for controlling a release separately of each of a parachute and the SDM from the sonoshell. 7. The UAS of claim 6, wherein the sonoshell restricts the SDM from pivoting to the expanded configuration while the SDM is disposed within the sonoshell. 8. The UAS of claim 6, wherein the UAS comprises: the SDM comprising: a plurality of rotors configured to generate propulsion for the SDM,a plurality of extension arms, wherein each extension arm supports at least one of the plurality of rotors; anda central pivot device supporting the plurality of extension arms radially extending from the central pivot device, wherein a first arm-support structure of the central pivot device is biased to pivot relative to a second arm-support structure of the central pivot device, wherein pivotal movement of the first and second arm-support structures rotates a first pair of the plurality of extension arms in unison relative to a second pair of the plurality of extension arms from the compact configuration to the expanded configuration while the SDM is airborne. 9. The UAS of claim 6, further comprising: a drogue chute configured to stabilize the sonoshell once deployed from the airborne vehicle; andthe parachute configured to deploy from the sonoshell after a rapid fall period following the sonoshell being deployed from the airborne vehicle. 10. An unmanned aerial system (UAS), comprising: a sonoshell configured to be deployed from an airborne vehicle; anda sonoshell deployable multicopter (SDM) configured to be held within and deployed from the sonoshell, the SDM including a plurality of rotors to generate propulsion for the SDM, a plurality of extension arms supporting the plurality of rotors, and a central pivot device fixed to the plurality of extension arms, wherein the central pivot device is configured and biased to pivot the plurality of extension arms from a compact configuration to an expanded configuration once the SDM is deployed from the sonoshell while airborne,wherein each pair of arms in a first pair and a second pair, respectively, of the plurality of extension arms is axially aligned with one another in the compact configuration. 11. The UAS of claim 10, wherein the sonoshell restricts the central pivot device from pivoting to the expanded configuration while the SDM is disposed within the sonoshell. 12. The UAS of claim 10, further comprising: a release mechanism contained within the sonoshell, wherein the release mechanism includes a chute latch and an aerial vehicle latch for controlling a separate release of each of a parachute and the SDM from the sonoshell. 13. The UAS of claim 12, wherein engagement of a catch included in the aerial vehicle latch with a distal portion of an extension arm holds the SDM within the sonoshell. 14. The UAS of claim 12, wherein a pivot axis of the central pivot device extends perpendicular to a longitudinal extent of the plurality of extension arms in both the compact configuration and the expanded configuration. 15. A method of deploying a sonotube deployable multicopter (SDM), comprising: deploying a parachute from a sonoshell encasing the SDM, wherein the SDM includes a first pair of extension arms supporting a first pair of rotors and a second pair of extension arms supporting a second pair of rotors, wherein the first pair of extension arms are configured and biased to pivot in unison relative to the second pair of extension arms from a compact configuration to an expanded configuration, wherein while disposed within the sonoshell the first and second pair of extension arms are held in the compact configuration; andopening an aerial vehicle latch of a release mechanism within the sonoshell, wherein opening the aerial vehicle latch allows the SDM to separate from the sonoshell with the parachute still tethered to the sonoshell, wherein separation from the sonoshell releases the first and second pair of extension arms to pivot into the expanded configuration. 16. The method of claim 15, further comprising: determining whether the sonoshell is at or below a predetermined altitude, wherein deploying the parachute is in response to determining the sonoshell is at or below the predetermined altitude. 17. The method of claim 15, further comprising: activating the first and second pair of rotors to initiate flight in response to the first and second pair of extension arms pivoting into the expanded configuration. 18. The method of claim 15, wherein opening the aerial vehicle latch disengages a catch from a distal portion of one of the first pair of extension arms. 19. The method of claim 15, further comprising: determining whether the sonoshell is moving at or below a predetermined speed, wherein opening the aerial vehicle latch is in response to determining the sonoshell is moving at or below the predetermined speed. 20. The method of claim 15, further comprising: ejecting the sonoshell in which the SDM is housed from an airborne vehicle; anddeploying a drogue chute along with the sonoshell.
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