GB675087A - Airspeed indicator - Google Patents
Airspeed indicatorInfo
- Publication number
- GB675087A GB675087A GB944/47A GB94447A GB675087A GB 675087 A GB675087 A GB 675087A GB 944/47 A GB944/47 A GB 944/47A GB 94447 A GB94447 A GB 94447A GB 675087 A GB675087 A GB 675087A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shaft
- link
- pointer
- speed
- aircraft
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/14—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring differences of pressure in the fluid
- G01P5/16—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring differences of pressure in the fluid using Pitot tubes, e.g. Machmeter
- G01P5/17—Coupling arrangements to the indicating device
- G01P5/175—Coupling arrangements to the indicating device with the determination of Mach number
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
675,087. Aircraft safe-speed indicators; indicating-apparatus. BENDIX AVIATION CORPORATION. Jan. 10, 1947 [Feb. 1, 1946], No. 944/47. Classes 106 (ii) and 106 (iv). Aircraft air-speed indicating apparatus comprises means for indicating the actual air-speed, a member responsive to atmospheric pressure for indicating the maximum safe air-speed at any attitude and means for adjusting the velocity ratio of the transmission to the maximum safe air-speed indicator according to a predetermined Mach number, the transmission comprising a link pivotally connected to the pressure-responsive member, a shaft adapted to be rotated by movement of the link and a driving connection between said shaft and the maximum safe air-speed indicator. The maximum safe air-speed, which is a function of the maximum permissible Mach number and of the altitude, is indicated by a pointer 15 of distinguishable colour or form. The pointer is driven by means of a toothed sector and pinion, by a counter-weighted shaft 42 to which is secured a radial arm 44 engaged by a pin 39 on a link 38 operated by an evacuated capsule 36 mounted on a casing 11, the interior of which is connected to the static head of the aircraft. The velocity ratio between the capsule 36 and the pointer 15 may be varied by raising or lowering the link 38 by means of a link 50 pivoted to the link 38 and eccentrically to a shaft 52, to which is geared an adjustment screw in the rear of the casing. The shaft 52 also carries a toothed sector 55 meshing with a pinion 56 on a shaft carrying a scale 18 of Mach numbers which co-operates with an index 17 on the instrument dial and by means of which the velocity ratio is correctly set. The pointer 15 may be prevented from passing above a preferred indication by means of an arm 66 on the shaft 42 which abuts a pin on a plate 63 rotatably adjustable by a screw 60 on the front of the instrument. The normal airspeed pointer 14 is arranged coaxially with the pointer 15 and is driven by a toothed sector 25 on a counterweighted shaft 24 rocked by a link 22 operated by a diaphragm 20, the interior of which is connected to the pitot tube of the aircraft. Specification 653,246 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US675087XA | 1946-02-01 | 1946-02-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB675087A true GB675087A (en) | 1952-07-02 |
Family
ID=22076450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB944/47A Expired GB675087A (en) | 1946-02-01 | 1947-01-10 | Airspeed indicator |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR941755A (en) |
| GB (1) | GB675087A (en) |
-
1947
- 1947-01-10 GB GB944/47A patent/GB675087A/en not_active Expired
- 1947-02-01 FR FR941755D patent/FR941755A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR941755A (en) | 1949-01-20 |
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