GB1500979A - Jet propulsion nozzles - Google Patents
Jet propulsion nozzlesInfo
- Publication number
- GB1500979A GB1500979A GB2628275A GB2628275A GB1500979A GB 1500979 A GB1500979 A GB 1500979A GB 2628275 A GB2628275 A GB 2628275A GB 2628275 A GB2628275 A GB 2628275A GB 1500979 A GB1500979 A GB 1500979A
- Authority
- GB
- United Kingdom
- Prior art keywords
- jet propulsion
- convergent
- nozzle
- convergent portion
- june
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K1/00—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
1500979 Jet propulsion nozzles ROLLSROYCE Ltd 16 June 1976 [20 June 1975] 26282/75 Heading F1J To reduce noise, the convergent portion of a convergent or convergent/divergent jet propulsion nozzle has a curved contour convex towards the axis of the nozzle such that the flowing fluid has substantially constant acceleration and uniform pressure gradient throughout the length of the convergent portion. The contour of the latter is defined by the equation:- A/A E =(1/M X )[(γ+1)/[2+(γ-1)M<SP>2</SP> X ]]<SP>-(γ+1)/2(γ-1)</SP> where A is the variable internal cross-section of the convergent portion, AE is the value of A at the exit E of the convergent portion, M X is the Mach No at co-ordinate X, and γ is the ratio of the specific heats of the fluid. The nozzle may be of fixed or variable area type for a gas turbine jet propulsion engine. Figures 3a to 3f (not shown) illustrate various nozzle contours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2628275A GB1500979A (en) | 1976-06-16 | 1976-06-16 | Jet propulsion nozzles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2628275A GB1500979A (en) | 1976-06-16 | 1976-06-16 | Jet propulsion nozzles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1500979A true GB1500979A (en) | 1978-02-15 |
Family
ID=10241198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2628275A Expired GB1500979A (en) | 1976-06-16 | 1976-06-16 | Jet propulsion nozzles |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1500979A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111565878A (en) * | 2017-09-22 | 2020-08-21 | 卡尔伯格-基金会 | Nozzle, arrangement comprising such a nozzle, plasma torch head, laser cutting head, plasma laser cutting head and plasma torch, method for plasma cutting, laser cutting and plasma laser cutting |
-
1976
- 1976-06-16 GB GB2628275A patent/GB1500979A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111565878A (en) * | 2017-09-22 | 2020-08-21 | 卡尔伯格-基金会 | Nozzle, arrangement comprising such a nozzle, plasma torch head, laser cutting head, plasma laser cutting head and plasma torch, method for plasma cutting, laser cutting and plasma laser cutting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| CSNS | Application of which complete specification have been accepted and published, but patent is not sealed |