GB2239081A - Aerially-deployed structures - Google Patents
Aerially-deployed structures Download PDFInfo
- Publication number
- GB2239081A GB2239081A GB8525120A GB8525120A GB2239081A GB 2239081 A GB2239081 A GB 2239081A GB 8525120 A GB8525120 A GB 8525120A GB 8525120 A GB8525120 A GB 8525120A GB 2239081 A GB2239081 A GB 2239081A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aerially
- deployed
- seaborne
- base
- cable
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41J—TARGETS; TARGET RANGES; BULLET CATCHERS
- F41J9/00—Moving targets, i.e. moving when fired at
- F41J9/08—Airborne targets, e.g. drones, kites, balloons
- F41J9/10—Airborne targets, e.g. drones, kites, balloons towed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41J—TARGETS; TARGET RANGES; BULLET CATCHERS
- F41J2/00—Reflecting targets, e.g. radar-reflector targets; Active targets transmitting electromagnetic or acoustic waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/38—Jamming means, e.g. producing false echoes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63G—OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS; MINE-LAYING; MINE-SWEEPING; SUBMARINES; AIRCRAFT CARRIERS
- B63G9/00—Other offensive or defensive arrangements on vessels against submarines, torpedoes, or mines
- B63G9/02—Means for protecting vessels against torpedo attack
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Aviation & Aerospace Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
An aerially-deployed structure which derives electrical power for the operation of apparatus associated with the structure (e.g. high power radar transmitting equipment and associated aerial) and/or for powering the structure itself by way of a single conductor high voltage electric cable extending to the structure from a seaborne base (e.g. ship), the electrical current return path to the seaborne base being made through a cable depending from the aerially-deployed structure and the sea.
Description
IMPROVEMENTS RELATING TO AERIALLY-DEPLOYED STRUCTURES
This invention relates to aerially-deployed powered or airborne structures which may be utilised for missile decoy purposes, as by providing an active radar transmitting aerial which transmits high-powered radar signals to divert radar-controlled missiles away from ships or other potential missile targets.
The generation of such radar signals necessitates the availability of high electrical power onboard the aerially-deployed structure and, moreover, the structure needs to attain and then maintain the requisite altitude and position relative to the ship or other potential missile target.
According to the present invention there is provided an aerially-deployed structure which derives electrical power for the operation of apparatus associated with the structure (e.g. high power radar transmitting equipment and associated aerial) and/or for powering the structure itself by way of a single conductor high voltage electric cable extending to the structure from a seaborne base (e.g. ship), the electrical current return path to the seaborne base being made through a single conductor cable depending from the aerially-deployed structure and the sea.
The present invention is based upon the realisation that by using the sea as the current return path for electrical power supplied to the aerially-deployed structure the need for an unacceptably heavy insulated high voltage two-way electrical cable for supplying power to the structure is avoided thereby making the supply of high power to aerially-deployed structures a practical possibility.
The structure may, for example, be powered by a suitable engine which drives a propeller and which derives electrical power over the single conductor cable from the seaborne base.
The powered structure may be sufficiently powerful to attain its aerial position under its own power or it may be projected to the requisite position from the ship or other seaborne base and the structure's own power then utilised to maintain the structure at the requisite altitude above sea level so that the dependent current return cable makes contact with the sea.
The powered cable may also embody an optical fibre to enable optical control signals to be fed to the aeriallydeployed structure from the seaborne base (e.g. ship or oil rig).
When the aerially-deployed structure is used for deploying radar equipment, the radar transmitter may be suspended below the structure. The single conductor power supply cable may be at 10 KV and capable of supplying the radar equipment with 50 KW so that a current of 5 amps returns to the seaborne base via the dependent cable and the sea.
To keep the weight of the power cable to a minimum it may be uninsulated except perhaps for a short length near the ship which may be provided with an insulated sleeve.
As previously mentioned, the main saving in weight stems from the cable being a single or one-way conductor and not having to provide heavy insulation between the adjacent conductors of a two-way cable.
Although radar missile decoy systems have been mentioned as possible applications of the present invention, the invention also has application to missile decoy systems such as for heat-seeking missiles where infra-red radiation displays may be provided by the aerially-deployed structure coupled to the seaborne base by means of the single one-way conductor cable.
As will be appreciated the embodiments of the invention may take many different forms but in one specific embodiment which is especially contemplated a ship may be provided with four aerially-deployed platforms connected to the ship by respective single conductor cables and located at spaced positions around the ship and at predetermined altitudes above the sea. The platforms are arranged to be launched from the ship by suitable launching means and are provided with propellers powered from engines carried by the respective platforms and which can be started into operation and then controlled by means of optical signals fed over optical fibres embodied in electrical cabling connecting the platforms to the ship so that the platforms maintain the requisite height above sea level with the cable depending therefrom making contact with the sea for establishing the return path to the ship.
Radar aerials for transmitting high-powered missile decoy radar signals are suspended below the propeller driven platforms and these signals will cause an incoming radarcontrolled missile to be diverted away from the ship with which the platforms are associated.
After use the platforms are recoverable from the sea by means of the cabling connected thereto.
Claims (4)
1. An aerially-deployed structure which derives electrical power for the operation of apparatus associated with the structure (e.g. high power radar transmitting equipment and associated aerial) and/or for powering the structure itself by way of a single conductor high voltage electric cable extending to the structure from a seaborne base (e.g. ship), the electrical current return path to the seaborne base being made through a cable depending from the aerially-deployed structure and the sea.
2. An aerially-deployed structure as claimed in claim 1, in which the structure is powered by a suitable engine which drives a propeller and which derives electrical power over the single conductor cable from the seaborne base.
3. An aerially-deployed structure as claimed in claim 1 or 2, in which the power cable embodies an optical fibre to enable optical control signals to be fed to the structure from the seaborne base.
4. An aerially-deployed structure substantially as hereinbefore described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8525120A GB2239081B (en) | 1985-10-11 | 1985-10-11 | Improvements relating to aerially-deployed structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8525120A GB2239081B (en) | 1985-10-11 | 1985-10-11 | Improvements relating to aerially-deployed structures |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2239081A true GB2239081A (en) | 1991-06-19 |
| GB2239081B GB2239081B (en) | 1991-11-27 |
Family
ID=10586543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8525120A Expired - Lifetime GB2239081B (en) | 1985-10-11 | 1985-10-11 | Improvements relating to aerially-deployed structures |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2239081B (en) |
-
1985
- 1985-10-11 GB GB8525120A patent/GB2239081B/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| GB2239081B (en) | 1991-11-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |