EP4149841A1 - Dispositif de déploiement amélioré pour nano-satellite - Google Patents
Dispositif de déploiement amélioré pour nano-satelliteInfo
- Publication number
- EP4149841A1 EP4149841A1 EP21731253.7A EP21731253A EP4149841A1 EP 4149841 A1 EP4149841 A1 EP 4149841A1 EP 21731253 A EP21731253 A EP 21731253A EP 4149841 A1 EP4149841 A1 EP 4149841A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- deployment device
- clamping element
- unlocking
- locking
- support frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000000295 complement effect Effects 0.000 claims abstract description 11
- 230000002093 peripheral effect Effects 0.000 claims description 62
- 230000006835 compression Effects 0.000 claims description 21
- 238000007906 compression Methods 0.000 claims description 21
- 230000014759 maintenance of location Effects 0.000 claims description 20
- 238000000926 separation method Methods 0.000 claims description 5
- 230000000717 retained effect Effects 0.000 claims description 3
- 230000000284 resting effect Effects 0.000 claims 1
- 230000005484 gravity Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
- B64G1/64—Systems for coupling or separating cosmonautic vehicles or parts thereof, e.g. docking arrangements
- B64G1/641—Interstage or payload connectors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
- B64G1/64—Systems for coupling or separating cosmonautic vehicles or parts thereof, e.g. docking arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
- B64G1/64—Systems for coupling or separating cosmonautic vehicles or parts thereof, e.g. docking arrangements
- B64G1/641—Interstage or payload connectors
- B64G1/642—Clamps, e.g. Marman clamps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
- B64G1/64—Systems for coupling or separating cosmonautic vehicles or parts thereof, e.g. docking arrangements
- B64G1/641—Interstage or payload connectors
- B64G1/643—Interstage or payload connectors for arranging multiple satellites in a single launcher
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
- B64G1/64—Systems for coupling or separating cosmonautic vehicles or parts thereof, e.g. docking arrangements
- B64G1/645—Separators
Definitions
- TITLE Improved deployment device for nano-satellite
- the present invention relates to the field of deployment devices for nanosatellites.
- Such nanosatellites are for example intended for scientific, observation or telecommunication missions.
- closed deployment devices formed by an elongated rectangle-shaped container containing a nanosatellite to be deployed in a complementary shape to the container in accordance with Cubesat standards.
- the nanosatellite is guided by a system of rails arranged at each longitudinal edge of the container to guide the ejection of the nanosatellite increasing the mass of the deployment devices and of the nanosatellite.
- Such deployment devices have the drawback of constraining the appendages of the nanosatellite, such as solar panels or telecommunications antennas for example.
- the object of the invention is to alleviate at least one of the cited drawbacks by proposing to simplify the structure of the deployment devices for nanosatellites while limiting the risk of angular or spin deviation of a nanosatellite when the latter. is deployed.
- the invention relates to a device for deploying a nanosatellite comprising:
- - a support frame designed to carry the nano-satellite and to be ejected from the main structure with the nano-satellite,
- the locking / unlocking structure being movably mounted on the main structure, the deployment device being characterized in that the locking / unlocking structure comprises :
- an elastically deformable actuating element to allow: in a locked position, to force the first clamping element to the second clamping element in order to retain the support frame to the main structure, and in an unlocked position, to release the first clamping element of the second clamping element in order to release the support frame from the main structure for its ejection.
- the nanosatellite deployment device allows the stressing of the support frame via that of the locking / unlocking structure, this by using simplified mechanical components.
- the release of the support frame from the main structure allows the detachment and ejection of the nanosatellite from the main structure.
- the design of the deployment device thus simplified makes it possible to make its use autonomous without requiring the presence of a specialist to perform the locking, that is to say, the arming or rearming of the deployment device during the test phases for example.
- the arming or rearming of the deployment device is carried out by elastically deforming the actuating element to bring it from its unlocked position to its locked position.
- the first clamping element and the second clamping element make it possible to constrain the support frame to the main structure so as to limit any play between them which may generate micro-shocks and make the dynamic behavior nonlinear, therefore non-predictive, that is, difficult to simulate.
- the simplified architecture of the deployment device also makes it possible to have a robust device.
- the deployment device improves the mechanical predictions and the behavior of the nanosatellite during its ejection.
- the locking / unlocking structure makes it possible to predetermine, on the one hand, the application of a preload and, on the other hand, to anticipate the behavior of the support frame released by the actuating element. as well as the first clamping element and the second clamping element.
- the first clamping element and the second clamping element provide radial and / or axial clamping of the locking / unlocking structure relative to the support frame.
- the first clamping element and the second clamping element have a preferentially asymmetrical toothed profile.
- a thread is also called a sawtooth thread.
- this thread is produced without a helix angle.
- An advantage of such a thread is to be able to limit the unlocking stroke while having sufficient detent stroke to absorb the elastic energy of the main structure.
- the first clamping element and the second clamping element are respectively formed by a circular clamping ring complementary to one another.
- the circular clamping ring forming the first clamping element comprises a plurality of clamping jaws.
- the actuating element is formed by a plurality of elastically deformable blades.
- the locking / unlocking structure comprises an element for retaining the locking / unlocking structure to the main structure.
- the retaining element is formed by a complementary retaining ring of the first clamping element.
- the retaining element is movable axially relative to the main structure and the first clamping element is movable radially relative to the retaining element.
- the axial displacement of the retaining element relative to the main structure and the radial displacement of the first clamping element relative to the retaining element make it possible to release the axial or radial stresses which may be generated during the release of the frame. support.
- the elastically deformable actuating element comprises a peripheral shank guided by a central shank of the main structure, the peripheral shank receiving an elastic compression unlocking element ensuring the tilting of the position of locking in the unlocked position.
- a first position of the peripheral barrel makes it possible to compress the elastic compression unlocking element and forces an active position of the actuating element in which the first clamping element engages with the second. clamping element and in the unlocked position, a second position of the peripheral barrel allows the release of the elastic compression element for unlocking and restores a passive position of the actuating element in which the first clamping element disengages from the second clamping element.
- a first position of the peripheral barrel makes it possible to compress the elastic compression unlocking element and forces an active position of the actuating element in which the first clamping element engages with the retaining element and in the unlocking position, a second position of the peripheral barrel releases the elastic compression unlocking element and restores a passive position of the actuating element in which the first clamping element disengages from the retaining element.
- the passive position of the actuating element corresponds to a mechanical rest position of the actuating element.
- the passive position of the actuating element corresponds to an unconstrained position of the actuating element.
- the active position of the actuating element corresponds to an active mechanical position of the actuating element.
- the active position of the actuating element corresponds to a constrained position of the actuating element.
- the deployment device comprises a thrust plate comprising a guide tail designed to be received in a central shaft of the main structure, the support frame of the nanosatellite being supported flat on the push plate so as to allow the ejection of the support frame and the separation of the support frame from the push plate after the ejection.
- Such a thrust plate has the advantage of allowing guidance of the support frame carrying the nanosatellite during its ejection while allowing separation of the thrust plate from the support frame.
- the nanosatellite and the support frame can be ejected from the device without the guide tail being fixed thereto.
- the nanosatellite thus does not have the unwanted appendage represented by a guide tail emerging from the nanosatellite.
- the guide tail slidably mounted relative to the central shaft makes it possible to limit the speed of angular or spin deflection during their deployment. This limits the risk of the nanosatellite turning on ejection.
- the guide tail and the central shaft of the main structure are tightened according to an H7e6 type adjustment.
- This small clearance makes it possible to guide the nanosatellite during ejection by taking up the torque which limits the performance of the deployment device.
- a peripheral stop of the thrust plate allows axial retention of the support frame relative to the thrust plate.
- Such a peripheral stop advantageously makes it possible to ensure a stable thrust of the support frame during its ejection. It also makes it possible to limit the phenomenon of torque.
- the thrust plate makes it possible to reduce the angular deviation or spin to 2%, when the known deployment devices generate an angular or spin deviation of between 7 and 10 ° / s.
- the support frame is hollowed out to receive the push plate. According to one embodiment of the invention, the support frame is supported on the main structure.
- the support frame and the main structure correspond in shape at the level of the support.
- the deployment device comprises a force-absorbing structure to hold the free end of the central shaft, the force-absorbing structure being formed of a central part surrounding the end. free of the central shaft and of a peripheral part extending from the central part to bear laterally on the main structure.
- the force-absorbing structure enables the elastic compression unlocking element to be placed in compression.
- the locking / unlocking structure comprises a plurality of push elements ensuring a preloading of the push plate.
- the thrust elements are regularly distributed around the central shaft.
- a push element comprises a guide body receiving a push rod retaining a push spring surrounding the guide body and retained between the guide body and the push rod, the push rod. thrust being provided to come to rest on the thrust plate.
- the push rod is integral with the push plate.
- the rod integral with the thrust plate allows the retention of the thrust plate during the ejection of the nanosatellite.
- Such a thrust element makes it possible to control the position of the support of the rod on the thrust plate without the moment generated by the thrust spring taken up by the guide body being transferred to the thrust plate.
- the rod has the effect of limiting the radial force transmitted to the thrust plate.
- the plurality of thrust elements is fixedly mounted on the main structure.
- the main structure equipped with the plurality of pushing elements forms a sub-assembly which can be mounted on a pulling machine in order to characterize the direction of pushing resulting from their combination.
- the thrust element can comprise an adjustment wedge provided on the guide body to adjust the compression of the spring.
- each thrust element independently to ensure the most stable possible support frame thrust.
- the deployment device can be adapted to a large number of nanosatellites.
- each nanosatellites has a center of gravity which can be offset from the center of thrust of the thrust plate.
- the plurality of thrust elements which can be adjusted by an adjusting shim makes it possible to compensate for this offset between the center of gravity and the center of thrust by compressing the spring independently of the thrust elements.
- the deployment device comprises a retention mechanism capable of locking the actuating element in its locking position and unlocking the actuating element to bring it into its unlocking position.
- the retention mechanism makes it possible to block the peripheral barrel in its first position and to unlock the peripheral barrel in its second position.
- the retention mechanism advantageously comprises a locking / unlocking element which can engage to lock the actuating element in its locking position and disengage to release the actuating element and bring it into its unlocking position.
- the locking / unlocking element can advantageously be formed by a control member constituted by an actuator, actuated for example by a pyrotechnic charge, an electromagnetic force or any other technology making it possible to fulfill the unlocking function.
- the peripheral shank comprises a radial projection and the retention mechanism comprises a cam comprising a circular ramp cooperating with the radial projection to bring the peripheral shank from its first position to its second position and vice versa.
- the cam is movable in rotation around the peripheral shaft to allow the displacement of the radial projection along the circular ramp.
- the circular ramp comprises an increasing linear portion bringing the radial projection between a low position corresponding to the unlocking position and a high position corresponding to the locking position.
- the increasing linear portion is interrupted to allow the passage of the radial projection directly from the high position to the low position.
- the circular ramp successively comprises the increasing linear portion between a first position and a second position to allow linear guidance of the radial projection from the low position to the high position, then a flat linear portion between the second position and a second position. third position to allow the radial projection to be maintained in the high position, then the circular ramp is interrupted between the third position and the first position to allow the radial projection to pass directly from the high position to the low position.
- the retention mechanism comprises an elastic element for bringing the cam from a retention position where the peripheral shank is in its first position to a rest position where the peripheral shank is in its second position.
- the elastic element is a spiral spring.
- the retention mechanism comprises a picking element which can be placed between the locking / unlocking element and the cam to maintain the cam in its retention position.
- the hooking element is advantageously provided to at least partially surround the circular ramp and to be compressed against the latter by the locking / unlocking element.
- the picking element is resiliently biased to disengage from the circular ramp, thus releasing the cam to bring it back to its rest position.
- the deployment device does not have an electric motor.
- the elastic compression unlocking element can be chosen from: an elastic spring, a composite leaf, or even a constant stiffness spring.
- the elastic compression unlocking element is preferably of constant stiffness.
- At least one elastic compression unlocking element is an elastic spring.
- FIG. 1 shows a detailed view of a deployment device according to the invention in the assembled state.
- FIG. 2 illustrates a sectional view of a support frame shown in Figure 1 on which is disposed a nanosatellite.
- FIG. 3 illustrates an exploded view of the deployment device shown in FIG. 1.
- FIG. 4A illustrates a half-sectional view of the deployment device shown in FIG. 1 in a locked position.
- FIG. 4B illustrates a half-sectional view of the deployment device shown in FIG. 1 in an unlocked position.
- FIG. 5A illustrates a half-sectional view of the deployment device shown in FIG. 1 in a first phase of ejection of the nanosatellite after unlocking of the device.
- FIG. 5B illustrates a half-sectional view of the deployment device shown in FIG. 1 in a second phase of ejection of the nanosatellite after unlocking of the device.
- FIG. 6 illustrates a top view of the deployment device of FIG. 1 showing an offset of the center of gravity of the nanosatellite with respect to the center of thrust of the deployment device.
- FIG. 7A illustrates a main structure of the deployment device shown in Figure 1 equipped with a locking / unlocking structure in a locked position.
- FIG. 7B illustrates a main structure of the deployment device shown in Figure 1 equipped with a locking / unlocking structure in an open position.
- FIG. 7C illustrates a main structure of the deployment device shown in Figure 1 equipped with a locking / unlocking structure in an unlocked position.
- FIG. 1 there is shown a deployment device 1 in the assembled state.
- the deployment device 1 comprises a main structure 2 intended to be mounted on a launcher of the nanosatellite 5 (shown in FIG. 2), a support frame 3 designed to carry the nanosatellite 5 and to be ejected from the structure. main 2 with the nano-satellite 5 and a locking / unlocking structure 4 of the support frame 3 with respect to the main structure 2.
- the main structure 2 has a circular shape 20 reinforced on its outline by stiffeners 21, preferably made from material therewith.
- the support frame 3 has a circular shape 30 (Figure 4A and 4B) at its base to conform in shape correspondence with the main structure 2, the circular shape 30 is extended by a rectangular shape 31 to conform to the nano satellite 5, as shown in Figure 2, according to the Cubesat standard.
- the support frame 3 is not limited to this type of nanosatellite 5 and the rectangular shape 31 can be adapted to other shapes of nanosatellites 5.
- the support frame 3 comprises a plurality of fixing elements 32.
- This plurality of fixing elements 32 makes it possible to immobilize the nano-satellite 5 on the support frame 3.
- the locking / unlocking structure 4 is shown partially covered by the support frame 3 and will be detailed with reference to Figure 3.
- the main structure 2 comprises a lower wall 22 and a peripheral wall 23 forming the outline of the main structure 2.
- a central shaft 24 extends in the center of the main structure 2 from the lower wall 22 to terminate with a free end 24. '.
- the main structure 2 carries a plurality of pushing elements 40 associated with the locking / unlocking structure 4 and regularly distributed around the central shaft 24.
- the locking / unlocking structure 4 comprises, on the one hand, a first clamping element 41 complementary to a second clamping element 42 of the support frame 3, and, on the other hand, an element of elastically deformable actuation 43.
- the elastically deformable actuating element 43 allows switching between: a locking position, to force the first clamping element 41 against the second clamping element 42 in order to retain the support frame 3 to the main structure 2, and a unlocking position, to release the first clamping element 41 from the second clamping element 42 in order to release the support frame 3 from the main structure 2 for its ejection.
- the first clamping element 41 and the second clamping element 42 are respectively formed by a circular clamping ring 41, 42 complementary to one another.
- the circular clamping ring 41 forming the first clamping element 41 comprises a plurality of clamping jaws 410 and the element actuation 43 is formed by a plurality of elastically deformable blade 430s 430.
- the locking / unlocking structure 4 further comprises a peripheral shaft 44 guided by the central shaft 24 of the main structure 2 and receiving an elastic compression unlocking element 45 ensuring the tilting from the locking position to the position. unlocking.
- the elastically deformable blades 430 extend from the peripheral shank 44 to the clamping jaws 410 of the first clamping element 41.
- the jaws 410 and the blades 430 are regularly distributed around the peripheral shaft 44.
- peripheral shank 44, the elastically deformable blades 430 and the jaws 410 are advantageously formed in a single piece, by machining for example.
- first clamping element 41 and the second clamping element 42 form a radial clamping of the locking / unlocking structure 4 with respect to the support frame 3.
- the locking / unlocking structure 4 comprises a retaining element 46 from the locking / unlocking structure 4 to the main structure 2.
- the retaining element 46 is here formed by a retaining ring 46 provided for s 'engage with the first clamping element 41. The retaining element 46 thus allows the locking / unlocking structure 4 to be axially prestressed on the main structure 2.
- the deployment device 1 comprises a force-absorbing structure 6 provided to hold the free end 24 'of the central shaft 24, and it includes a push plate 7.
- the force-absorbing structure 6 is formed of a central part 60 surrounding the free end 24 'of the central shaft 24 and of a peripheral part 61 extending from the central part 60 to bear laterally. on the main structure 2.
- the thrust plate 7 comprises a guide tail 70 intended to be received in a central shank 24 of the main structure 2.
- a plurality of lateral blades 43011 extend radially from the peripheral shank 44 to be joined by a peripheral edge 73 The peripheral edge 73 thus makes it possible to stiffen the plurality of lateral blades 430111.
- the thrust plate 7 is advantageously formed in a single piece, by molding for example.
- the plurality of lateral blade 430lles 71 stiffened by the peripheral edge 73 allows the support of the support frame 3 on the thrust plate 7.
- each side 43011e blade 71 of the push plate 7 includes an opening 72.
- Each opening 72 of the thrust plate 7 is opposite a passage 47 formed between two blades 430s 430 of the actuating element 43 of the locking / unlocking structure 4.
- the opening 72 and the passage 47 are provided for be traversed by a thrust element 40 carried by the main structure 2.
- the peripheral edge 73 is shown in an octagonal shape designed to match a shape complementary to an interior contour of the support frame 3.
- FIG. 4A showing a half-sectional view of the deployment device 1 shown in a locked position.
- the guide tail 70 of the thrust plate 7 is housed in the central shaft 24 and the thrust plate 7 bears flat against the support frame 3 of the nano-satellite 5 so as to allow ejection. from the support frame 3 and the separation of the support frame 3 from the push plate 7 after ejection.
- the support frame 3 is hollowed out to receive the push plate 7.
- a peripheral stop 74 of the thrust plate 7 is provided.
- a radial clearance J3 is provided between the support frame 3 and the thrust plate 7 in order to limit the radial stresses that can be applied to the support frame 3 during ejection.
- the support frame 3 rests on the main structure 2 to ensure retention of the support frame 3.
- the support frame 3 is placed on the main structure 2 by a slot / groove type correspondence.
- the retaining element 46 of the locking / unlocking structure 4 is mounted to move relative to the main structure 2.
- the retaining element 46 is mounted in a recess 230 of the peripheral wall 23 of the main structure 2.
- the recess 230 allows axial travel of the retaining element 46.
- the jaw 410 shown is engaged both with the retainer 46 and with the support frame 3.
- a hook 410A of the jaw 410 is radially in correspondence with a peripheral notch 460A of the retaining ring 46 forming the retaining element 46 and a toothed profile 410B of the jaw 410 is radially in correspondence with a toothed profile 300B of an inner contour of the support frame 3.
- a first position of the peripheral shank 44 compresses the elastic compression unlocking element 45.
- the elastic compression unlocking element 45 is caught between the peripheral shank 44 and the central shank 24.
- the first position of the peripheral barrel 44 forces an active position of the blade 430 in which the toothed profile 410B of the jaw 410 engages with the toothed profile 300B of the support frame 3, and in which the hook 410A of the jaw 410 engages with the peripheral notch 460A of the retaining ring 46.
- the blade 430 is mechanically constrained in a radial direction and devoid of an axial component.
- the central part 60 of the force-absorbing structure 6 comprises a flat wall 60A from which a hollow circular projection 60B extends axially and ribs 60C from the circular projection 60B radially.
- the hollow circular projection 60B is provided for holding the elastic compression unlocking element 45 in the peripheral barrel 44.
- An axial clearance J1 is provided between the force-absorbing structure 6 and the thrust plate 7, this to prevent hyperstatism between these two parts.
- the hollow circular projection 60B also allows the radial retention of the free end 24 'of the central shaft 24.
- an axial clearance J2 is provided between the force-absorbing structure 6 and the actuating element 43. , this to prevent hyperstatism between these two parts
- the peripheral part 61 of the force-absorbing structure 6 comprises lateral arms 61A extending from the central part 60 to bear laterally on the main structure 2.
- the side arms 61A bear axially against the lower wall 22 of the main structure 2. It will be noted that these side arms 61A are spaced from the peripheral wall 23 so that the forces taken up by the load-absorbing structure 6 are only transmitted to the lower wall 22.
- the peripheral part 61 allows the absorption of the forces absorbed by the central part 60. In this case, the forces received by the central shaft 24, the blade 430 and the thrust plate 7 are partly transmitted to the peripheral part 61 via the central part 60. The peripheral part 61 then transmits the forces received from the central part 60 to the main structure 2.
- FIG. 4B showing a half-sectional view of the deployment device 1 shown in an unlocked position.
- a second position of the peripheral shank 44 makes it possible to release the elastic compression unlocking element 45 and re-establishes a passive position of the blade 430 in which the toothed profile 410B of the jaw 410 disengages from the toothed profile 300B of the support frame 3, and in which the hook 410A of the jaw 410 disengages from the peripheral notch 460A of the retaining ring 46.
- the blade 430 is returned to its stressed mechanical state.
- the blade 430 includes a radial component and an axial component.
- FIG. 5A showing a half-section view of the deployment device 1 in a first phase of ejection of the nanosatellite 5 after the device has been unlocked.
- the plurality of thrust elements 40 shown in FIG. 3 provides a preloading of the thrust plate 7. This preloading has the effect of ensuring the thrust of the thrust plate 7 during ejection.
- the thrust element 40 comprises a guide body 400 fixedly mounted on the main structure 2.
- the guide body 400 receives a push rod 401 retaining a push spring 402 surrounding the guide body 400.
- the push spring 402 is retained between the guide body 400 and the push rod 401 for compression.
- This push rod 401 is designed to come to bear on the push plate 7.
- the push rod 401 has a rod head 401A fixed to the push plate 7.
- the rod head 401A passes through the opening 72 of the push plate 7 to be fixed there.
- a means for fixing the head of the push rod 401 to the push plate 7 is here a bolt.
- the push rod 401 has the effect of limiting the radial force transmitted to the push plate 7.
- the push rod 401 is lowered to compress the push spring 402.
- FIG. 5B showing a half-section view of the deployment device 1 in a second phase of ejection of the nanosatellite 5 after the device has been unlocked.
- the ejection of the support frame 3 carrying the nano-satellite 5 has been shown.
- the push rod 401 axially retains the push plate 7 thanks to its head secured to the push plate 7.
- the nano-satellite 5 is then ejected without the appendage represented by the guide tail 70.
- the thrust member 40 may include an adjusting shim 404 provided on the guide body 400 to adjust the compression of the spring.
- the adjustment wedge can be moved axially along the guide body by means of a screw pushing it axially.
- the adjustment wedge 404 thus allows adjustment of each thrust element 40 independently to ensure a thrust of the support frame 3 as stable as possible.
- the deployment device 1 has been shown.
- the center of gravity 50 of the nanosatellite 5 has also been shown, which is in this case illustrated offset from the center of thrust 10 of the thrust plate 7.
- the guide tail 70 of the thrust plate 7 and the plurality of thrust elements 40 which can be adjusted by the adjusting wedge 404 makes it possible to compensate for this offset between the center of gravity 50 and the center of thrust 10 by compressing the spring of thrust 402 independently of the thrust elements 40.
- FIGS. 7A to 7C where a retention mechanism 8 of the actuating element 43 has been shown.
- the retention mechanism 8 is provided to lock the actuating element 43 in its locking position and unlock the actuating element 43 to bring it into its unlocking position.
- the retention mechanism 8 makes it possible to block the peripheral barrel 44 in its first position and to unlock the peripheral barrel 44 in its second position.
- the retention mechanism 8 includes a locking / unlocking element 80 capable of radially engaging to lock the actuating element 43 in its locked position and radially disengaging to release the actuating element 43 and bring it into place. its unlocked position.
- the locking / unlocking element 80 is here formed by a magnetic control member consisting of a cylinder and a piston. Such a control member is also known by the Anglo-Saxon term “Pin Puller”. According to other variants, the control member can be constituted by an actuator, actuated for example by a pyrotechnic charge, an electromagnetic force or any other technology making it possible to fulfill the unlocking function.
- the retention mechanism 8 comprises a cam 81 comprising a circular ramp 810 cooperating with a radial projection 440 of the peripheral shank 44 capable of bringing the peripheral shank 44 from its first position to its second position and vice versa.
- the circular ramp 810 successively comprises an increasing linear portion 810A between a first position and a second position to allow increasing linear guidance of the radial projection 440 from the low position to the high position of the peripheral shaft 44, then a portion linear plane 810B between the second position and a third position to allow the radial projection 440 to be held in the high position of the peripheral shaft 44, then the circular ramp 810 is interrupted between the third position and the first position to allow the projection to tilt radial 440 directly from the high position to the low position of the peripheral shaft 44.
- An elastic member (not shown) formed by a spiral spring is provided to return the cam 81 from a retaining position, where the peripheral shank 44 is in its first position, to a rest position, where the peripheral shank 44 is. in its second position.
- the retention mechanism 8 includes a picking member 82 which can be disposed between the locking / unlocking member 80 and the cam 81 to maintain the cam 81 in its retaining position.
- the hooking element 82 comes to surround at least partially the circular ramp 810 and it is compressed against the latter by the locking / unlocking element 80.
- the locking / unlocking element 80 comprises a thrust plate 800 compressing the picking element 82 against the circular ramp 810.
- the picking element 82 is resiliently returned to disengage from the circular ramp 810, thus releasing the cam 81 to return it to its rest position.
- the cam 81 is then resiliently biased in rotation thus causing the rotation of the circular ramp 810.
- the rotation of the circular ramp 810 then guides the radial projection 440 of the peripheral shaft 44 along the latter.
- the radial projection 440 is then driven causing the peripheral shaft 44 to tilt directly from its first position to its second position.
- This second position of the peripheral shank 44 returns the actuating element 43, here the blade 430, in its passive position where the first clamping element 41 disengages from the second clamping element 42 to release the support frame 3.
- the ejection of the support frame 3 from the nano-satellite 5 is then caused by the plurality of pushing elements 40.
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Abstract
Description
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Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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FR2004623A FR3109928B1 (fr) | 2020-05-11 | 2020-05-11 | Dispositif de déploiement amélioré pour nano-satellite |
PCT/FR2021/050818 WO2021229178A1 (fr) | 2020-05-11 | 2021-05-11 | Dispositif de déploiement amélioré pour nano-satellite |
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Publication Number | Publication Date |
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EP4149841A1 true EP4149841A1 (fr) | 2023-03-22 |
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Family Applications (1)
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EP21731253.7A Pending EP4149841A1 (fr) | 2020-05-11 | 2021-05-11 | Dispositif de déploiement amélioré pour nano-satellite |
Country Status (4)
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US (1) | US20230141652A1 (fr) |
EP (1) | EP4149841A1 (fr) |
FR (1) | FR3109928B1 (fr) |
WO (1) | WO2021229178A1 (fr) |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3467745D1 (en) * | 1983-03-03 | 1988-01-07 | Fokker Aircraft | System for breaking a tensioned connecting element |
US5125601A (en) * | 1991-12-26 | 1992-06-30 | The United States Of America As Represented By The Administrator, National Aeronautics And Space Administration | Payload retention device |
US6227493B1 (en) * | 1999-04-06 | 2001-05-08 | Planetary Systems Corporation | Reusable, separable, structural connector assembly |
SE0003315L (sv) * | 2000-09-18 | 2001-10-15 | Saab Ericsson Space Ab | Anordning och metod vid en rymdfarkost |
US20050279890A1 (en) * | 2004-03-23 | 2005-12-22 | Walter Holemans | Latching separation system |
US7748663B1 (en) * | 2005-05-24 | 2010-07-06 | Lockheed Martin Corporation | Launch vehicle stage integration device |
US7905453B2 (en) * | 2006-12-21 | 2011-03-15 | Intelsat | Piggyback equipment panel payload arrangement, a device for and method of attaching a hosted secondary piggyback payload and adapter to be used for a piggyback secondary payload arrangement for launching the piggyback equipment panel secondary |
US8979035B2 (en) * | 2009-11-18 | 2015-03-17 | Ruag Schweiz Ag | Zero-shock separation system |
US9180984B2 (en) * | 2012-05-11 | 2015-11-10 | The Boeing Company | Methods and apparatus for performing propulsion operations using electric propulsion systems |
US8915472B2 (en) * | 2012-05-11 | 2014-12-23 | The Boeing Company | Multiple space vehicle launch system |
US9707748B2 (en) * | 2013-10-07 | 2017-07-18 | Planetary Systems Corporation | Printed spacecraft separation system |
EP3145812A4 (fr) * | 2014-05-19 | 2018-01-24 | MacDonald, Dettwiler and Associates Inc. | Système d'éjection de charges utiles |
EP3012194B1 (fr) * | 2014-10-24 | 2020-07-08 | Thales | Manipulation d'un satellite dans l'espace |
US10633896B1 (en) * | 2015-03-17 | 2020-04-28 | Raul Barba | Theft resistant locking device for a roll-up door |
FR3041609B1 (fr) * | 2015-09-30 | 2017-09-08 | Airbus Defence & Space Sas | Dispositif de separation controlee entre deux pieces et application d'un tel dispositif |
CN106742081B (zh) * | 2016-11-29 | 2021-02-05 | 航天东方红卫星有限公司 | 一种基于旋转压环解锁的分离机构 |
US10669048B1 (en) * | 2017-06-15 | 2020-06-02 | United Launch Alliance, L.L.C. | Mechanism for increasing jettison clearance |
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2020
- 2020-05-11 FR FR2004623A patent/FR3109928B1/fr active Active
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2021
- 2021-05-11 WO PCT/FR2021/050818 patent/WO2021229178A1/fr unknown
- 2021-05-11 EP EP21731253.7A patent/EP4149841A1/fr active Pending
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2022
- 2022-11-14 US US17/986,149 patent/US20230141652A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
WO2021229178A1 (fr) | 2021-11-18 |
FR3109928B1 (fr) | 2022-04-22 |
US20230141652A1 (en) | 2023-05-11 |
FR3109928A1 (fr) | 2021-11-12 |
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