US2099368A - Device for the automatic control of camber flaps and the like for airplanes - Google Patents
Device for the automatic control of camber flaps and the like for airplanes Download PDFInfo
- Publication number
- US2099368A US2099368A US63805A US6380536A US2099368A US 2099368 A US2099368 A US 2099368A US 63805 A US63805 A US 63805A US 6380536 A US6380536 A US 6380536A US 2099368 A US2099368 A US 2099368A
- Authority
- US
- United States
- Prior art keywords
- flaps
- flap
- airplanes
- automatic control
- accumulator
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C3/00—Wings
- B64C3/38—Adjustment of complete wings or parts thereof
- B64C3/44—Varying camber
- B64C3/50—Varying camber by leading or trailing edge flaps
Definitions
- duration of this retraction being moreover auto- 20 maticaliy limited to that of the cause which determined it.
- the pilot can thus set the flaps-in action whatever may be the speed of the airplane.
- the flaps will leave the neutral position only when the I speed of the airplane will be lower than or equal to a definite value, and, moreover, their position will, at every instant, be the resultant of the stress of the reaction of air with the permanent stress to which they are subjected owing to the 30 device;
- the flaps are, when the airplane is stationary, set to the maximum of their displacement; inproportio-n as the airplane takes up 35 speed by rolling, the flaps are gradually retracted for assuming the position most favourable for flying off.
- this arrangement has an incon- 5o venience in that it requires the presence of a source of compressed air on board, and, consequently, in that it does not allow utilization of the flaps when there is a failure in the supply of compressed air.
- the device according to the present invention is free of these inconveniences, as it is characterized by the fact that the energy necessary for causing downward movement of a flap has been February 13, 1936, Serial No. 63,805
- the flap l (operative position)l (retracted position) -pivoted at 2 at a suitable point of the wing A is controlled by the rod 3 of a piston 4 movable in a hydraulic cylinder 5, which communicates, through a conduit 6, with a hydropneumatic accumulator I, known per se. It is to be noted that this accumulator encloses a piston 8 surmounted by a cushion of compressed air 9, whilst the lowerchamber ll! of the accumulator, underneath the piston, is filled with liquid, the latter also filling up the cylinder 5.
- this cylinder is connected, at the rear of piston 4, with a pump I2 sucking the liquid from a tank l3 through a conduit M.
- the flap l - In its set or operative position, the flap l -is held by the pressure existing in the accumulator 1, the valve l5 being open.
- the pressure in the accumulator I is determined in such a manner that the flap I automatically retracts when the speed. of the airplane reaches a definite value.
- the pilot closes the valve [5 and sets the pump l2 in action.
- the liquid delivered by the latter into conduit ll pushes back piston 4:- the flap retracts and, at the same time, the pressure increases in accumulator I.
- the energy thus supplied to the accumulator during the retracting operation of the flap will be used during the next downward movement of the flap since at this moment, owing to the fact that the valve I5 is opened, it is the accumulator which will supply the energy necessary for this downward movement.
- a device for the control of an airplane camber fiap, or the like comprising: a hydraulic cylinder, a piston movable in said cylinder, a hydro-pneumatic accumulator, a pipe line connecting this cylinder with said tank on one side of said piston, a liquid tank connected to said cylinder on the other side of the piston, a valve interposed in the pipe "line connecting the cylinder to the tank, a source ofhydraulicpressure allowing to move said piston in the direction corresponding to the increase of the pressure in said accumulator, and means for connecting said piston to the camber flap for actuating the latter in one direction and in the other.
Description
Nov. 16, 1937.
DEVICE FOR THE AUTOMATIC R. LEVY 2,099,368
CONTROL OF CAMBER FLAPS AND THE LIKE FOR AIRPLANES Filed Feb. 13, 1936 40 Serial No. 15,908, for
Patented Nov. 16, 1937.
UNITED STATES PATENT OFFICE I 2,099,368 DEVICE FOR THE AUTOMATIC CONTROL OF CAMBER FLAPS AND THE LIKE PLANES FOR Am Ren Lucien Levy, Montrouge, France, assignor to Socit dlnventions Aeronautiques et Mecaniques S. I. A. M., Fribourg, (Suisse) Application In France 1 Claim.
2. The hinge moment 'resulting from the reaction of air on the flap is rigorously limited to a 1.5 definite value, so that any increase of this stress (which might result either from an increase of speed of the airplane, or from a gust of wind) immediatelycauses retraction of the flap, the
duration of this retraction being moreover auto- 20 maticaliy limited to that of the cause which determined it.
The pilot can thus set the flaps-in action whatever may be the speed of the airplane. The flaps will leave the neutral position only when the I speed of the airplane will be lower than or equal to a definite value, and, moreover, their position will, at every instant, be the resultant of the stress of the reaction of air with the permanent stress to which they are subjected owing to the 30 device;
Likewise, when the pilot desires the airplane to fly off, the flaps are, when the airplane is stationary, set to the maximum of their displacement; inproportio-n as the airplane takes up 35 speed by rolling, the flaps are gradually retracted for assuming the position most favourable for flying off. t
Bythe device described in the United States patent application filed on April 11, 1935, under System for controlling the evolutions of a movable object in a fluid, in the name of the applicant, results of the same nature can be obtained by sending in the cylinder, designated by reference number 23 in Fig. 4 of this 45 patent application, air under a definite pressure by means of a distributor allowing at will, either to admit air under this pressure or to allow it to escape for retracting the flaps.
However, this arrangement has an incon- 5o venience in that it requires the presence of a source of compressed air on board, and, consequently, in that it does not allow utilization of the flaps when there is a failure in the supply of compressed air. I
The device according to the present invention is free of these inconveniences, as it is characterized by the fact that the energy necessary for causing downward movement of a flap has been February 13, 1936, Serial No. 63,805
April 5, 1935 stored during the preceding retractionof this flap, so that the setting in action of the latter for downward movement is independent of any source of energy external to the device.
The invention is diagrammatically illustrated in the accompanying drawing: I
.The flap l (operative position)l (retracted position) -pivoted at 2 at a suitable point of the wing A, is controlled by the rod 3 of a piston 4 movable in a hydraulic cylinder 5, which communicates, through a conduit 6, with a hydropneumatic accumulator I, known per se. It is to be noted that this accumulator encloses a piston 8 surmounted by a cushion of compressed air 9, whilst the lowerchamber ll! of the accumulator, underneath the piston, is filled with liquid, the latter also filling up the cylinder 5.
Through a conduit-4|, this cylinder is connected, at the rear of piston 4, with a pump I2 sucking the liquid from a tank l3 through a conduit M. A valve l5, interposed in a pipe I6,
allows, when it is opened, of putting the conduit l l directly in communication with the tank l3.
In its set or operative position, the flap l -is held by the pressure existing in the accumulator 1, the valve l5 being open. The pressure in the accumulator I is determined in such a manner that the flap I automatically retracts when the speed. of the airplane reaches a definite value.
For retracting the flap, the pilot closes the valve [5 and sets the pump l2 in action. The liquid delivered by the latter into conduit ll pushes back piston 4:- the flap retracts and, at the same time, the pressure increases in accumulator I. The energy thus supplied to the accumulator during the retracting operation of the flap will be used during the next downward movement of the flap since at this moment, owing to the fact that the valve I5 is opened, it is the accumulator which will supply the energy necessary for this downward movement.
What I claim as my invention and desire to secure by Letters Patent is:
A device for the control of an airplane camber fiap, or the like, comprising: a hydraulic cylinder, a piston movable in said cylinder, a hydro-pneumatic accumulator, a pipe line connecting this cylinder with said tank on one side of said piston, a liquid tank connected to said cylinder on the other side of the piston, a valve interposed in the pipe "line connecting the cylinder to the tank, a source ofhydraulicpressure allowing to move said piston in the direction corresponding to the increase of the pressure in said accumulator, and means for connecting said piston to the camber flap for actuating the latter in one direction and in the other.
RENE LUCIEN LEVY.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR2099368X | 1935-04-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
US2099368A true US2099368A (en) | 1937-11-16 |
Family
ID=9683715
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US63805A Expired - Lifetime US2099368A (en) | 1935-04-05 | 1936-02-13 | Device for the automatic control of camber flaps and the like for airplanes |
Country Status (1)
Country | Link |
---|---|
US (1) | US2099368A (en) |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2439183A (en) * | 1944-03-20 | 1948-04-06 | Herbert E Page | Hydraulic jack |
US2476378A (en) * | 1945-03-12 | 1949-07-19 | Warner Aircraft Corp | Valve assembly |
US2627249A (en) * | 1947-05-31 | 1953-02-03 | M & J Engineering Co | Fluid pressure operated positioning apparatus for motor valves |
US2932951A (en) * | 1957-03-08 | 1960-04-19 | Gen Dynamics Corp | Forming apparatus |
US3213176A (en) * | 1962-03-08 | 1965-10-19 | Elektrokemisk As | Electrode suspension mechanism and method of operating same |
US3464315A (en) * | 1967-06-12 | 1969-09-02 | Chambersburg Eng Co | Mechanical pneumatic servo control system for high-speed impact devices |
US3563346A (en) * | 1969-02-03 | 1971-02-16 | Automotive Prod Co Ltd | Extensible and contractable devices |
US3667621A (en) * | 1970-10-20 | 1972-06-06 | Wisconsin Foundry And Machine | Fluid power system for a self-contained unloading unit |
US3762278A (en) * | 1971-10-29 | 1973-10-02 | S Yatsenko | Pulse piston drive |
US3823758A (en) * | 1970-12-03 | 1974-07-16 | Allen Electric Equipment Co | Actuator assembly |
US3912227A (en) * | 1973-10-17 | 1975-10-14 | Drilling Syst Int | Motion compensation and/or weight control system |
US4061296A (en) * | 1975-12-18 | 1977-12-06 | Andrew Kubek, Sr. | Braking system for ski or float equipped aircraft |
US4135547A (en) * | 1977-03-14 | 1979-01-23 | Baker International Corporation | Quick disengaging valve actuator |
US4537221A (en) * | 1983-04-27 | 1985-08-27 | Gewerkschaft Eisenhutte Westfalia | Hydraulic control devices for use with mining apparatus |
US4729224A (en) * | 1984-06-04 | 1988-03-08 | Mcateer James D | Installation, apparatus and method for actuating doors, gates and the like under extreme environmental conditions |
US6385969B1 (en) * | 1999-09-10 | 2002-05-14 | Hoerbiger Hydraulik Gmbh | Arrangement for hydraulic actuation of a movable component on a vehicle |
US11690645B2 (en) | 2017-05-03 | 2023-07-04 | Medtronic Vascular, Inc. | Tissue-removing catheter |
US11819236B2 (en) | 2019-05-17 | 2023-11-21 | Medtronic Vascular, Inc. | Tissue-removing catheter |
US11871958B2 (en) | 2017-05-03 | 2024-01-16 | Medtronic Vascular, Inc. | Tissue-removing catheter with guidewire isolation liner |
-
1936
- 1936-02-13 US US63805A patent/US2099368A/en not_active Expired - Lifetime
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2439183A (en) * | 1944-03-20 | 1948-04-06 | Herbert E Page | Hydraulic jack |
US2476378A (en) * | 1945-03-12 | 1949-07-19 | Warner Aircraft Corp | Valve assembly |
US2627249A (en) * | 1947-05-31 | 1953-02-03 | M & J Engineering Co | Fluid pressure operated positioning apparatus for motor valves |
US2932951A (en) * | 1957-03-08 | 1960-04-19 | Gen Dynamics Corp | Forming apparatus |
US3213176A (en) * | 1962-03-08 | 1965-10-19 | Elektrokemisk As | Electrode suspension mechanism and method of operating same |
US3464315A (en) * | 1967-06-12 | 1969-09-02 | Chambersburg Eng Co | Mechanical pneumatic servo control system for high-speed impact devices |
US3563346A (en) * | 1969-02-03 | 1971-02-16 | Automotive Prod Co Ltd | Extensible and contractable devices |
US3667621A (en) * | 1970-10-20 | 1972-06-06 | Wisconsin Foundry And Machine | Fluid power system for a self-contained unloading unit |
US3823758A (en) * | 1970-12-03 | 1974-07-16 | Allen Electric Equipment Co | Actuator assembly |
US3762278A (en) * | 1971-10-29 | 1973-10-02 | S Yatsenko | Pulse piston drive |
US3912227A (en) * | 1973-10-17 | 1975-10-14 | Drilling Syst Int | Motion compensation and/or weight control system |
US4061296A (en) * | 1975-12-18 | 1977-12-06 | Andrew Kubek, Sr. | Braking system for ski or float equipped aircraft |
US4135547A (en) * | 1977-03-14 | 1979-01-23 | Baker International Corporation | Quick disengaging valve actuator |
US4537221A (en) * | 1983-04-27 | 1985-08-27 | Gewerkschaft Eisenhutte Westfalia | Hydraulic control devices for use with mining apparatus |
US4729224A (en) * | 1984-06-04 | 1988-03-08 | Mcateer James D | Installation, apparatus and method for actuating doors, gates and the like under extreme environmental conditions |
US6385969B1 (en) * | 1999-09-10 | 2002-05-14 | Hoerbiger Hydraulik Gmbh | Arrangement for hydraulic actuation of a movable component on a vehicle |
US11690645B2 (en) | 2017-05-03 | 2023-07-04 | Medtronic Vascular, Inc. | Tissue-removing catheter |
US11871958B2 (en) | 2017-05-03 | 2024-01-16 | Medtronic Vascular, Inc. | Tissue-removing catheter with guidewire isolation liner |
US11896260B2 (en) | 2017-05-03 | 2024-02-13 | Medtronic Vascular, Inc. | Tissue-removing catheter |
US11819236B2 (en) | 2019-05-17 | 2023-11-21 | Medtronic Vascular, Inc. | Tissue-removing catheter |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2099368A (en) | Device for the automatic control of camber flaps and the like for airplanes | |
US2366382A (en) | Control surface boost device and gust dampener | |
US2391699A (en) | Propeller control mechanism | |
US2814482A (en) | Aircraft landing gear shock strut | |
US2294918A (en) | Retractable undercarriage for airplanes and the like | |
US2593910A (en) | Variable pitch reversible propeller | |
US2507671A (en) | Propeller control | |
US2428934A (en) | Airplane having adjustable wings and wing adjusting means | |
US1864134A (en) | Landing gear | |
US2356306A (en) | Pump control mechanism | |
US2753134A (en) | Aircraft control system | |
US2384201A (en) | Locking device for remote control and other force transmitting systems | |
US2591839A (en) | Retractable landing gear for aircraft | |
US2333973A (en) | Electric feathering control | |
US3054582A (en) | Combined jack and shock-absorber device for aircraft landing gear | |
US2449554A (en) | Hydropneumatic accumulator type power plant with differential speed motor | |
US2138326A (en) | Flying machine | |
US2474585A (en) | Control of flying-wing aircraft | |
GB456863A (en) | Improved devices for the automatic control of camber flaps and the like for airplanes | |
US2449400A (en) | Follow-up type servomotor | |
FR2227990A1 (en) | Pivoted wing aircraft with pilot operated control - transfer wing load to undercarriage on take-off | |
US2647708A (en) | Control for the landing gear of aircraft | |
GB676313A (en) | Improvements in telescopic seat stays | |
US2195035A (en) | Wing flap operating and overload safety device | |
GB813266A (en) | Hydraulically actuated devices such as adjustable pitch aeronautical propellers |