[특허]Method and apparatus for parachute reefing control

Pioneer Aerospace Corporation

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Method and apparatus for parachute reefing control

국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B64D-017/62
미국특허분류(USC)	244/152; 244/150; 102/387
출원번호	UP-0414677 (2006-04-28)
등록번호	US-7703720 (2010-05-20)
발명자 / 주소	Smith, John J. Witkowski, Allen C.
출원인 / 주소	Pioneer Aerospace Corporation
대리인 / 주소	Sperry, Zoda & Kane
인용정보	피인용 횟수 : 6 인용 특허 : 34

초록
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An apparatus for controlling the drag area growth of a parachute canopy during airborne descent with sensors attached to the payload for facilitating modification of the schedule of release of a parachute canopy reefing mechanism. A control processor is included that can receive and/or calculate a schedule for disengaging the reefing on the parachute. One or more wireless transmitters at the payload transmit the releasing signal from the payload to the reefing mechanism normally located adjacent the parachute canopy. The control processor can also be configured to receive input information from multiple sensors attached to the payload that monitor parameters such as altitude, position, load force, dynamic pressure, time and others to facilitate instantaneous recalculation of the disreefing schedule responsive to such conditions.

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We claim: 1. A parachute reefing control apparatus for use with a payload attached through suspension lines to a parachute having a canopy with a canopy reefing device and a reefing release mechanism for controlling canopy inflation and airborne descent after deployment thereof, said parachute reefing control apparatus comprising: A. a reefing control processor means mounted with respect to the payload and preprogrammed with a release schedule for generating of at least one release signal therefrom; B. a wireless transmitter means mounted with respect to the payload and operatively connected to said reefing control processor means, said wireless transmitter means being responsive to receiving at least one release signal from said reefing control processor means for wirelessly transmitting a wireless signal; C. a wireless receiver means attached with respect to the parachute canopy and being operative to be actuated responsive to receiving a wireless signal transmitted from said wireless transmitter means to actuate the reefing release mechanism to initiate disengagement of the canopy reefing device to allow initiation of inflation of the canopy of the parachute to facilitate controlled descent thereof with the payload attached thereto; and D. a plurality of sensing means mounted with respect to the payload for monitoring parameters to facilitate determination of a final release schedule for disengaging the reefing of the parachute canopy, said reefing control processor means being operatively connected to said sensing means for receiving information therefrom for facilitating determining of a final release schedule by modifying of the preprogrammed release schedule. 2. A parachute reefing control apparatus as defined in claim 1 wherein said reefing control processor means is operative to generate a plurality of release signals including at least a first release signal for initiating operation of the reefing release mechanism and sequentially thereafter at least a second release signal operable also to initiate operation of the reefing release mechanism to serve as a redundant backup. 3. A parachute reefing control apparatus as defined in claim 2 wherein said wireless transmitter means includes: A. a primary wireless transmitter responsive to receiving a first release signal from said reefing control processor means to generate a primary wireless signal to initiate operation of the reefing release mechanism; and B. a secondary wireless transmitter responsive to receiving a second release signal from said reefing control processor means to generate a secondary wireless signal to initiate operation of the reefing release mechanism as a redundant backup. 4. A parachute reefing control apparatus as defined in claim 3 wherein said wireless receiver means includes: A. a primary wireless receiver responsive to receiving said primary wireless signal from said primary wireless transmitter to initiate operation of the reefing release mechanism; and B. a secondary wireless receiver responsive to receiving said secondary wireless signal from said secondary wireless transmitter to initiate operation of the reefing release mechanism as a redundant backup. 5. A parachute reefing control apparatus as defined in claim 1 wherein the reefing release mechanism includes a first stage reefing means and a second stage reefing means which both need to be disengaged in order to allow for full inflation of the parachute canopy. 6. A parachute reefing control apparatus as defined in claim 5 wherein the reefing release mechanism includes: A. a first reefing release device operable to disengage the first stage reefing means; and B. a second reefing release device operable to disengage the second stage reefing means. 7. A parachute reefing control apparatus as defined in claim 6 wherein said reefing control processor means is operative to generate a plurality of release signals including at least a first release signal for initiating operation of the first reefing release device to allow for partial inflation of the parachute canopy and, sequentially thereafter, a plurality of subsequent release signals operable to initiate operation of the subsequent reeling release devices to allow for full inflation of the parachute canopy. 8. A parachute reefing control apparatus as defined in claim 7 wherein said wireless transmitter means includes: A. a primary wireless transmitter responsive receiving a first release signal from said reeling control processor means to generate a primary wireless signal to initiate operation of the first reefing release device to allow partial inflation of the parachute canopy; and B. a secondary wireless transmitter responsive to receiving a second release signal from said reeling control processor means to generate a secondary wireless signal to initiate operation of the second reefing release device to allow full inflation of the parachute canopy. 9. A parachute reeling control apparatus as defined in claim 8 wherein said wireless receiver means includes: A. a primary wireless receiver responsive to receiving said primary wireless signal from said primary wireless transmitter to initiate operation of the first reefing release device to allow at least partial inflation of the parachute canopy; and B. a secondary wireless receiver responsive to receiving said secondary wireless signal from said secondary wireless transmitter to initiate operation of the second reefing release device for facilitating complete inflation of the parachute canopy. 10. A parachute reefing control apparatus as defined in claim 1 wherein the canopy release device includes at least one line extending around the canopy restricting parachute canopy inflation and said reefing release mechanism comprises at least one electrically-fired cutter positioned adjacent the line for cutting thereof responsive to actuation thereof. 11. A parachute reefing control apparatus as defined in claim 1 wherein the payload is attached to the parachute canopy only through a plurality of suspension lines extending therebetween. 12. A parachute reefing control apparatus as defined in claim 1 wherein said sensing means includes a mission time clock for determining the time lapsed after deployment of the parachute and payload. 13. A parachute reefing control apparatus as defined in claim 1 wherein said sensing means includes an altitude sensor for determining the instantaneously distance from the payload to ground level. 14. A parachute reefing control apparatus as defined in claim 1 wherein said sensing means includes a position determining means to instantaneously monitor the position of the payload relative to the earth therebelow. 15. A parachute reefing control apparatus as defined in claim 14 wherein said position determining means includes a global position system device. 16. A parachute reeling control apparatus as defined in claim 1 wherein said sensing means includes a pressure sensing means for monitoring the dynamic pressure being exerted instantaneously on the payload. 17. A parachute reefing control apparatus as defined in claim 1 wherein said sensing means includes a load sensing means for sensing the load force of the canopy. 18. A parachute reefing control apparatus as defined in claim 1 further comprising a parachute deployment inhibiting means attached to the payload and operatively positioned between said reefing control processor means and said wireless transmitter means to selectively prevent deployment and/or disreefing of the parachute unless all parameters being monitored by said sensing means are within predetermined tolerances values. 19. A parachute reefing control apparatus as defined in claim 1 wherein the reefing release mechanism includes a first stage reefing means and multiple subsequent stage reefing means which all need to be disengaged in order to allow for full inflation of the parachute canopy. 20. A parachute reefing control apparatus as defined in claim 19 wherein the reefing release mechanism includes: A. a first reeling release device operable to disengage the first stage reeling means; and B. multiple subsequent stage reefing release devices operable to disengage each of the multiple subsequent stage reeling means. 21. A parachute reefing control apparatus as defined in claim 20 wherein said reefing control processor means is operative to generate a plurality of release signals for initiating operation of the first reefing release device and multiple subsequent reefing release devices to allow for full inflation of the parachute canopy. 22. A parachute reefing control apparatus as defined in claim 21 wherein said wireless transmitter means includes: A. a primary wireless transmitter responsive receiving a first release signal from said reefing control processor means to generate a primary wireless signal to initiate operation of the first reefing release device to allow partial inflation of the parachute canopy; and B. a plurality of subsequent wireless transmitters each configured to be responsive to receiving an associated one of the subsequent reefing release signals to generate a plurality of subsequent wireless signals each capable if initiating operation of one of the multiple subsequent stage reefing release devices to allow full inflation of the parachute canopy. 23. A parachute reefing control apparatus as defined in claim 22 wherein said wireless receiver means includes: A. a primary wireless receiver responsive to receiving said primary wireless signal from said primary wireless transmitter to initiate operation of the first reefing release device to allow at least partial inflation of the parachute canopy; and B. a plurality of subsequent wireless receivers responsive to receiving an associated one of said subsequent wireless signals to initiate operation of one of said subsequent reefing release devices for facilitating inflation of the parachute canopy. 24. A parachute reefing control apparatus for use with a payload attached solely through suspension lines to a parachute having a canopy with a multistage canopy reefing device and a reefing release mechanism for controlling canopy inflation and airborne descent after deployment thereof, said parachute reefing control apparatus comprising: A. a plurality of sensing means mounted with respect to the payload for monitoring parameters to facilitate determination of a release schedule for disengaging the reefing of the parachute canopy, said sensing means including; (1) a mission time clock for determining the time lapsed after deployment of the parachute and payload; (2) a global positioning system device to instantaneously monitor the position of the payload relative to the earth therebelow; (3) a pressure sensing means for monitoring the dynamic pressure being exerted instantaneously on the payload; (4) a load sensing means for sensing the load force of the canopy; B. a reefing control processor means mounted with respect to the payload and operatively connected to said sensing means for receiving information therefrom instantaneously for facilitating determining a release schedule for generating a plurality of release signals; C. a wireless transmitter means mounted with respect to the payload and operatively connected to said reeling control processor means, said wireless transmitter means being responsive to receiving release signals from said reeling control processor means for wirelessly transmitting a wireless signal; D. a wireless receiver means attached with respect to the parachute canopy and being operative to be actuated responsive to receiving wireless signals transmitted from said wireless transmitter means to sequentially actuate the stages of the reefing release mechanism to initiate disengagement of the canopy reefing device to allow at least partial inflation of the canopy of the parachute to facilitate controlled descent thereof with the payload attached thereto and thereafter to allow full canopy inflation; and E. a parachute deployment inhibiting means attached to the payload and operatively positioned between said reefing control processor means and said wireless transmitter means to selectively prevent deployment and/or disreefing of the parachute unless all parameters being monitored by said sensing means are within predetermined tolerances values. 25. A parachute reefing control apparatus for use with a payload attached though a plurality of individual sets of suspension lines to a plurality of individual parachutes, each having a canopy with a canopy reefing device and a reefing release mechanism for controlling canopy inflation and airborne descent after deployment thereof, said parachute reefing control apparatus comprising: A. a reefing control processor means mounted with respect to the payload and preprogrammed with a release schedule for generating of at least one release signal therefrom; B. a plurality of wireless transmitter means mounted with respect to the payload and operatively connected to said reefing control processor means, each of said wireless transmitter means being responsive to receiving at least one release signal from said reefing control processor means for wirelessly transmitting a wireless signal designated for each reefing release mechanism of each parachute; and C. a plurality of wireless receiver means each being attached with respect to the canopy of the associated parachute and being operative to be actuated responsive to receiving a wireless signal designated therefore and transmitted from one of said wireless transmitter means to actuate the reefing release mechanism associated therewith to initiate disengagement of the associated canopy reefing device to allow initiation of the canopy of the associated parachute to facilitate controlled descent thereof with the payload attached thereto and coordinated inflation of each parachute canopy of the plurality of parachutes attached to the payload.

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Method and apparatus for parachute reefing control

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Method and apparatus for parachute reefing control

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