GB641472A - Improvements in or relating to pulse jet engines - Google Patents
Improvements in or relating to pulse jet enginesInfo
- Publication number
- GB641472A GB641472A GB7975/47A GB797547A GB641472A GB 641472 A GB641472 A GB 641472A GB 7975/47 A GB7975/47 A GB 7975/47A GB 797547 A GB797547 A GB 797547A GB 641472 A GB641472 A GB 641472A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- jet
- disc
- holes
- petals
- 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
- F02K7/00—Plants in which the working fluid is used in a jet only, i.e. the plants not having a turbine or other engine driving a compressor or a ducted fan; Control thereof
- F02K7/02—Plants in which the working fluid is used in a jet only, i.e. the plants not having a turbine or other engine driving a compressor or a ducted fan; Control thereof the jet being intermittent, i.e. pulse-jet
- F02K7/06—Plants in which the working fluid is used in a jet only, i.e. the plants not having a turbine or other engine driving a compressor or a ducted fan; Control thereof the jet being intermittent, i.e. pulse-jet with combustion chambers having valves
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
Abstract
641,472. Jet-propulsion plant. TENNEY, W. L. March 24, 1947, Nos. 7975, 7976 and 7977. Convention dates, Feb. 25, 1946, April 6, 1946, and April 11, 1946. [Class 110(iii)] [Also in Group XII] A jet propulsion tube, of the type in which air inlet valves vibrate in unison with the pulses in an open exhaust pipe and designed for miniature aeroplanes, has a single air entry 19, Fig. 2 leading to a Venturi throat 18 and then dividing into a conical arrangement of passages provided by drilled holes 56 in a valve plate 14. The holes are covered by reed valves formed from a disc of thin sheet steel, Fig. 3, which is divided by radial cuts 68 into as many petals as there are holes 56. The disc is held by a back plate 64 which is suitably curved to limit the opening movement of the petals. The combustion chamber 10 is cylindrical and is joined by a frusto-conical piece 11 to a long cylindrical jet tube 12. Fuel admitted to a central bore in a stem 82 is drawn out through transverse holes 88 by the airstream. For starting, compressed air is supplied through a pipe 93. A sparking plug 78 may be mounted on the piece 11 or on the valve plate 14. The combustion chamber and jet tube are divided longitudinally into two or three segments which may be formed by pressing. The longitudinal jointing flanges may be used to position the tube in an open-ended casing through which cooling air flows. The valve plate may be formed with a conical valve face, or it may be cast as a separate piece with the terminal portions of the ports axially directed. The back plate 64 may be a dished disc. or it may be formed with petals to correspond with the valve disc. The fuel tank is mounted below the jet tube and may have an up-stream air-entry to provide pressure above the fuel when the tube is in flight. The casing may be a single metal tube or two spaced concentric tubes. Or it may be a metal tube lined with heatinsulation, or concentric metal tubes with heat-insulation packed between them. The exhaust tube may be cylindrical throughout or the terminal part may be divergent.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US641472XA | 1946-02-25 | 1946-02-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB641472A true GB641472A (en) | 1950-08-16 |
Family
ID=22053873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7975/47A Expired GB641472A (en) | 1946-02-25 | 1947-03-24 | Improvements in or relating to pulse jet engines |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB641472A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE968328C (en) * | 1952-04-13 | 1958-02-06 | Schmidt Paul | Jet engine with intermittent combustion of fuel in air by shock wave ignition |
| US8607543B2 (en) | 2006-05-19 | 2013-12-17 | Bae Systems Plc | Millimetre-scale engine |
| GR1009761B (en) * | 2019-05-13 | 2020-06-09 | Αλεξανδρος Κωνσταντινου Αγγελιδακης | Inlet valve with integral spark plug |
-
1947
- 1947-03-24 GB GB7975/47A patent/GB641472A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE968328C (en) * | 1952-04-13 | 1958-02-06 | Schmidt Paul | Jet engine with intermittent combustion of fuel in air by shock wave ignition |
| US8607543B2 (en) | 2006-05-19 | 2013-12-17 | Bae Systems Plc | Millimetre-scale engine |
| GR1009761B (en) * | 2019-05-13 | 2020-06-09 | Αλεξανδρος Κωνσταντινου Αγγελιδακης | Inlet valve with integral spark plug |
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