GB877788A - Aircraft control system - Google Patents
Aircraft control systemInfo
- Publication number
- GB877788A GB877788A GB35329/57A GB3532957A GB877788A GB 877788 A GB877788 A GB 877788A GB 35329/57 A GB35329/57 A GB 35329/57A GB 3532957 A GB3532957 A GB 3532957A GB 877788 A GB877788 A GB 877788A
- Authority
- GB
- United Kingdom
- Prior art keywords
- amplifier
- aircraft
- transmitter
- signal
- speed
- 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
Links
- 239000003990 capacitor Substances 0.000 abstract 3
- 238000013016 damping Methods 0.000 abstract 1
- 230000001419 dependent effect Effects 0.000 abstract 1
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 230000006698 induction Effects 0.000 abstract 1
- 238000012544 monitoring process Methods 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D1/00—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
- G05D1/04—Control of altitude or depth
- G05D1/06—Rate of change of altitude or depth
- G05D1/0607—Rate of change of altitude or depth specially adapted for aircraft
- G05D1/0615—Rate of change of altitude or depth specially adapted for aircraft to counteract a perturbation, e.g. gust of wind
- G05D1/0638—Rate of change of altitude or depth specially adapted for aircraft to counteract a perturbation, e.g. gust of wind by combined action on the pitch and on the motors
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
Abstract
877,788. Automatic control systems for aircraft. SPERRY RAND CORPORATION. Nov. 13 1957 [Nov. 13, 1956], No. 35329/57. Class 38 (4). An aircraft control system comprises an airspeed meter 10 coupled to transmitter 15 interconnected with receiver 18, a control signal developed in rotor 17 being used to control servomotor 46 for positioning throttle valve 56 and adjusting the forward speed of the aircraft. The control signal passes through amplifier 50 which is also supplied from rate network 48, an A.C. generator 51 also supplying displacement and rate feed-back signals to the amplifier. The rotor 17 may be positioned by an air-speed setter 21 coupled to transmitter 22 connected to receiver 27 whose rotor 31 is mounted on shaft 32 and provides a signal which passes through amplifier 35 to induction motor 34. This motor controls the movement of shaft 32 and drives generator 40 providing speed feedback for damping. A monitor switch 37 may be adjusted to disconnect the air-speed setter 21 and connect a monitoring system in its place, a potentiometer 66 being controlled by a percentage stall-speed setter 62. Potentiometer 67 is adjusted by an air stream direction detector 71 consisting of an angle-of-attack vane positioned in accordance with the angle between the airstream direction and the fore-andaft axis of the aircraft. Any unbalance in bridge network 66, 67, 72 causes a signal to be applied to summing amplifier 98 the output of which is fed to amplifier 35 to drive the motor 34 which re-positions the rotor 17. The change in speed of the aircraft is in the sense to change the angle-of-attack to eliminate unbalance of the bridge 66, 67, 72, the airspeed then having the value which provides the percentage of stall speed indicated on setter 62. A signal voltage dependent on the angle-of-attack is provided by potentiometer 85, the average value of the signal being stored in capacitor 89 whilst the remainder is fed through diode 91 so charging capacitor 92 to a voltage proportional to the peak deviation of the angle-of-attack from its average value. A signal proportional to this voltage is fed, after modulation by diode modulator 94, through capacitor 97 and switch 96 to summing amplifier 98. This gust-compensating signal increases the average air speed reference set by rotor 17 by an amount proportional to the difference between the average and peak values of the gusts. A transmitter 103 operating in conjunction with vertical reference 102 supplies signals through mixer 141 and amplifier 106 to servomotor 105 controlling elevator 104. Feed-back signals corresponding to the elevator adjustment are supplied to the amplifier 106 by transmitter 113. Control signals may also be selectively supplied from glide path receiver 115 or altitude control 120. When compensation switch 122 is closed, transmitter 101 injects signals into mixer 141, the transmitter being coupled to the motor 46. Thus, when the throttle valve 56 changes the thrust of the engines, the pitch angle of the aircraft is altered to maintain the lift more nearly constant when the aircraft is making a landing approach with its flaps down. Specifications 655,172 and 877,789 are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US877788XA | 1956-11-13 | 1956-11-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB877788A true GB877788A (en) | 1961-09-20 |
Family
ID=22207196
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB35329/57A Expired GB877788A (en) | 1956-11-13 | 1957-11-13 | Aircraft control system |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB877788A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110471461A (en) * | 2019-08-28 | 2019-11-19 | 中国空气动力研究与发展中心高速空气动力研究所 | A kind of wind tunnel model angle of attack control device and its control method |
-
1957
- 1957-11-13 GB GB35329/57A patent/GB877788A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110471461A (en) * | 2019-08-28 | 2019-11-19 | 中国空气动力研究与发展中心高速空气动力研究所 | A kind of wind tunnel model angle of attack control device and its control method |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2667228A (en) | Aircraft fuel and propeller pitch control | |
US4326253A (en) | Lift control system for aircraft vertical path guidance | |
US4466526A (en) | Helicopter engine control with rotor speed decay anticipator | |
US4490793A (en) | Cruise speed control for aircraft performance management system | |
GB1338096A (en) | Governors for diesel engines | |
CA1247218A (en) | Descent flight path control for aircraft | |
US4589616A (en) | Cruise airspeed control of aircraft altitude capture | |
CA1214149A (en) | Helicopter engine torque compensator | |
EP0183282A2 (en) | Longitudinal stability augmentation system | |
US2620149A (en) | Aircraft control apparatus | |
US3169000A (en) | Automatic attitude control device for v.t.o.l. | |
US3510090A (en) | Automatic altitude control apparatus for aircraft | |
GB1023831A (en) | Automatic trim correcting system for aircraft | |
GB877788A (en) | Aircraft control system | |
US4382282A (en) | Trim control system for reduced drag | |
US3963197A (en) | Control device for avoiding the pitching up of missiles or aircraft | |
US3533579A (en) | Aircraft speed controller | |
GB2144244A (en) | Rotorcraft load factor enhancer | |
GB931661A (en) | Aircraft flight control system | |
GB1256666A (en) | ||
US3437292A (en) | Automatic aircraft throttle closure system for flare | |
GB1327142A (en) | Apparatus for controlling the speed-load characteristics of a gas turbine | |
US2552131A (en) | Aircraft speed governor means | |
GB1011055A (en) | Improved engine fuel control system | |
GB926559A (en) | Control system for helicopter |