COBHAM Antennas
7, chemin de Vaubesnard
91410 DOURDAN FRANCE
T : +33 (0)1 60 81 55 55
F : +33 (0)1 60 81 55 56
Document ref.
STE-2442-88-281
Issue 04
Equipment part number
2442-88-XX
Page
1 of 9
TECHNICAL SPECIFICATION
ATC/DME ANTENNA 950-1260 MHz
Part number 2442-88-XX
Summary
PAGES
Document history ...................................................................................................... 2
1 – General ............................................................................................................... 3
2 – Description .......................................................................................................... 3
3 – Composition of supply .......................................................................................... 4
4 – Physical characteristics ......................................................................................... 5
5 – Electrical and radioelectrical characteristics............................................................. 6
6 – Operating dependability........................................................................................ 7
7 – Quality assurance provisions ................................................................................. 9
Appendix: - Overall dimensions drawing n° 305255 issue F
- Typical VSWR measurement
- Radiation patterns
CHELTON Antennas trading as Cobham Aerospace communication.
www.cobham.com/aerospace-communications
The content of this document as well as any associated intellectual property are proprietary and confidential to Cobham Aerospace
communication and /or its affiliate companies. Disclosure, reproduction, copying, distribution and/or other use are subject to agreement by
Cobham Aerospace communication.
COBHAM Antennas
7, chemin de Vaubesnard
91410 DOURDAN FRANCE
T : +33 (0)1 60 81 55 55
F : +33 (0)1 60 81 55 56
CHELTON Antennas trading as Cobham Aerospace communication.
Document ref.
STE-2442-88-281
Issue 04
Equipment part number
2442-88-XX
Page
2 of 9
www.cobham.com/aerospace-communications
The content of this document as well as any associated intellectual property are proprietary and confidential to Cobham Aerospace
communication and /or its affiliate companies. Disclosure, reproduction, copying, distribution and/or other use are subject to agreement by
Cobham Aerospace communication.
COBHAM Antennas
7, chemin de Vaubesnard
91410 DOURDAN FRANCE
T : +33 (0)1 60 81 55 55
F : +33 (0)1 60 81 55 56
1.
Document ref.
STE-2442-88-281
Issue 04
Equipment part number
2442-88-XX
Page
3 of 9
GENERAL
The airborne antenna part number 2442-88-XX was designed to be used for DME and
ATC systems. This antenna is similar to the antenna part number 2439-89-XX.
The antenna is designed for wide body aircraft such as AIRBUS. It is a streamlined
aluminium alloy cast blade antenna, DC grounded to provide static charges flow and
lightning protection.
2.
DESCRIPTION
2.1
MECHANICAL ARCHITECTURE
This antenna includes the following items:
•
a streamlined aluminium alloy cast blade with a slot,
•
resin,
•
1 connector.
The radiating element is DC grounded. The antenna grounding is made by the screws.
The inner conductor of the connector is DC grounded for monitoring. The antenna is
totally painted, except the body of connector, the mounting plane of the base plate and
the countersunk holes.
2.2
ITEM FUNCTIONAL DESCRIPTION
The main equipment items have the following functions:
•
1 blade with a slot as the radiating element,
•
resin to fill the slot
•
1 connector to feed the slot.
CHELTON Antennas trading as Cobham Aerospace communication.
www.cobham.com/aerospace-communications
The content of this document as well as any associated intellectual property are proprietary and confidential to Cobham Aerospace
communication and /or its affiliate companies. Disclosure, reproduction, copying, distribution and/or other use are subject to agreement by
Cobham Aerospace communication.
COBHAM Antennas
7, chemin de Vaubesnard
91410 DOURDAN FRANCE
T : +33 (0)1 60 81 55 55
F : +33 (0)1 60 81 55 56
3.
COMPOSITION OF SUPPLY
3.1
BASIC SUPPLY
Document ref.
STE-2442-88-281
Issue 04
Equipment part number
2442-88-XX
Page
4 of 9
The supply includes:
3.2
•
the antenna part number 2442-88-XX,
•
a declaration of conformity,
•
an individual acceptance tests report.
OPTIONAL SUPPLY
On order, the following options are available:
3.3
•
antenna colour (refer to paragraph 4.3),
•
specific customer acceptance,
•
specific packaging.
ACCESSORIES
None.
3.4
PACKAGING - DELIVERY
The antenna is packed in a cardboard box with internal protections.
The acceptance tests report and the declaration of conformity shall be placed inside the
packaging, if ordered.
CHELTON Antennas trading as Cobham Aerospace communication.
www.cobham.com/aerospace-communications
The content of this document as well as any associated intellectual property are proprietary and confidential to Cobham Aerospace
communication and /or its affiliate companies. Disclosure, reproduction, copying, distribution and/or other use are subject to agreement by
Cobham Aerospace communication.
Document ref.
STE-2442-88-281
Issue 04
Equipment part number
2442-88-XX
Page
5 of 9
COBHAM Antennas
7, chemin de Vaubesnard
91410 DOURDAN FRANCE
T : +33 (0)1 60 81 55 55
F : +33 (0)1 60 81 55 56
4.
PHYSICAL CHARACTERISTICS
4.1
DIMENSIONS
Refer to overall dimensions drawing in appendix.
4.2
WEIGHT
≤ 120 g
4.3
PAINT – FINISHING
Treatment against corrosion for the connector.
Surface conversion for baseplate mounting face & millings: Surtec 650
The antenna colour is indicated by the two last digits of its part number:
4.4
•
standard colour: antenna p/n 2442-88-03 is referring to orange bright paint,
•
other colours – antenna p/n 2442-88-XX : consult Chelton Antennas
MARKING
The antenna has an identification label marked with:
4.5
•
the manufacturer’s name (MFR),
•
the equipment name (LRU),
•
the equipment part number (PNR),
•
the equipment serial number (SER),
•
the date of acceptance (DMF),
•
the amendment (Amdt),
•
the inspection stamp,
•
The ETSO data
•
a bi-dimensional barcode for overall identification of the antenna.
MECHANICAL INTERFACE
Refer to overall dimensions drawing in appendix.
CHELTON Antennas trading as Cobham Aerospace communication.
www.cobham.com/aerospace-communications
The content of this document as well as any associated intellectual property are proprietary and confidential to Cobham Aerospace
communication and /or its affiliate companies. Disclosure, reproduction, copying, distribution and/or other use are subject to agreement by
Cobham Aerospace communication.
COBHAM Antennas
7, chemin de Vaubesnard
91410 DOURDAN FRANCE
T : +33 (0)1 60 81 55 55
F : +33 (0)1 60 81 55 56
Document ref.
STE-2442-88-281
Issue 04
Equipment part number
2442-88-XX
Page
6 of 9
5.
ELECTRICAL AND RADIOELECTRICAL CHARACTERISTICS
5.1
PERFORMANCES
Performances are checked with the antenna mounted at the centre of a ∅ 0.9 m
metallic reflector plane.
•
Frequency range ....................................... 950 MHz to 1260 MHz
•
Nominal impedance................................... 50 Ohms
•
VSWR ...................................................... ≤ 1.6
•
Main polarisation....................................... linear vertical
•
Crossed polarisation .................................. more than 10 dB under the main
polarisation in the horizontal plane
5.2
•
Gain max.................................................. > 0 dB iso
•
Radiation pattern ...................................... see appendix (values in dBi)
o
In azimuth .......................................... omnidirectional
o
In elevation......................................... similar to a quarter wave monopole
•
Power handling capability .......................... 250W CW, 4 kW peak pulse power
•
Protection from lightning ........................... radiating element DC grounded
•
Radiation patterns..................................... see in appendix
ELECTRICAL INTERFACE
•
Antenna connector .................................... C female
The antenna grounding is made by the mounting plane of the base plate and the
screws used to fasten it. The inner conductor of connector is DC grounded for
monitoring.
CHELTON Antennas trading as Cobham Aerospace communication.
www.cobham.com/aerospace-communications
The content of this document as well as any associated intellectual property are proprietary and confidential to Cobham Aerospace
communication and /or its affiliate companies. Disclosure, reproduction, copying, distribution and/or other use are subject to agreement by
Cobham Aerospace communication.
Document ref.
STE-2442-88-281
Issue 04
Equipment part number
2442-88-XX
Page
7 of 9
COBHAM Antennas
7, chemin de Vaubesnard
91410 DOURDAN FRANCE
T : +33 (0)1 60 81 55 55
F : +33 (0)1 60 81 55 56
6.
OPERATING DEPENDABILITY
6.1
ENVIRONMENT
The antenna was tested according to DO 160 D:
•
Section 4 – Temperature and altitude.................. category F2
•
Section 5 – Temperature variation ...................... category S1 (30°C/minute)
•
Section 6 – Humidity.......................................... category C
•
Section 7 – Operational shocks ........................... category D (with 6.7g/20ms)
•
Section 8 – Vibrations ........................................ category S curve C
•
Section 10 – Waterproofness .............................. category S
•
Section 11 – Fluids susceptibility ......................... category F
•
Section 12 – Sand and dust ................................ category S (sand speed : 18 m/s)
•
Section 13 – Fungus resistance........................... category F
•
Section 14 – Salt spray ...................................... category T
•
Windmilling requirement for new developed electronics equipment ref 513.5115-01
ed 2.
•
RAT vibrations................................................... zone 1
Note: The requirements above related to DO 160D are identical to those related to
DO 160E, so that the tests carried out according to DO 160D are compliant with
DO 160E.
The antenna was also tested at +150°C during 3 minutes & +85°C during 30 minutes.
CHELTON Antennas trading as Cobham Aerospace communication.
www.cobham.com/aerospace-communications
The content of this document as well as any associated intellectual property are proprietary and confidential to Cobham Aerospace
communication and /or its affiliate companies. Disclosure, reproduction, copying, distribution and/or other use are subject to agreement by
Cobham Aerospace communication.
COBHAM Antennas
7, chemin de Vaubesnard
91410 DOURDAN FRANCE
T : +33 (0)1 60 81 55 55
F : +33 (0)1 60 81 55 56
6.2
Document ref.
STE-2442-88-281
Issue 04
Equipment part number
2442-88-XX
Page
8 of 9
RELIABILITY
MTBF ≥ 30 000 hours.
6.3
INSTALLATION
The antenna is mounted by means of four screws (not supplied).
No specific tool required to install or remove the antenna from the aircraft.
6.4
TRANSPORT - STORAGE
Besides normal handling transportation and storage recommendations, the antenna
does not require any specific precaution.
The antenna connector is protected by a plastic cap.
6.5
MAINTAINABILITY
None.
CHELTON Antennas trading as Cobham Aerospace communication.
www.cobham.com/aerospace-communications
The content of this document as well as any associated intellectual property are proprietary and confidential to Cobham Aerospace
communication and /or its affiliate companies. Disclosure, reproduction, copying, distribution and/or other use are subject to agreement by
Cobham Aerospace communication.
COBHAM Antennas
7, chemin de Vaubesnard
91410 DOURDAN FRANCE
T : +33 (0)1 60 81 55 55
F : +33 (0)1 60 81 55 56
Document ref.
STE-2442-88-281
Issue 04
Equipment part number
2442-88-XX
Page
9 of 9
7.
QUALITY ASSURANCE PROVISIONS
7.1
GENERAL PROVISIONS
Quality assurance provisions are described in CHELTON Antennas Quality Manual
reference MAQ-F6175.
These provisions are compliant with ISO 9001 series standards.
7.2
SPECIAL PROVISIONS
7.2.1 Quality assurance plan
There is no specific quality assurance plan for this product.
7.2.2 Risk control
For the development and the production of this product, we did not identify any
component that needs a special follow-up.
7.2.3 Justification of the definition
The definition of the antenna PN 2442-88-XX (derived from the antenna part number
2439-89-XX), is justified on the basis of the tests covering radioelectrical performances
& environmental conditions.
Refer to documents REQ-2439-89-068, REC-2442-88-007 & DJD-2442-88-049, last
issues.
7.2.4 Acceptance tests
Checks and tests carried out in the final factory inspection are defined in the factory
acceptance tests procedure, document reference PCP-2442-88-196 last issue.
If required on the order form, factory acceptance in the presence of the customer may
be performed. This acceptance will cover all or part of the above mentioned operations.
CHELTON Antennas trading as Cobham Aerospace communication.
www.cobham.com/aerospace-communications
The content of this document as well as any associated intellectual property are proprietary and confidential to Cobham Aerospace
communication and /or its affiliate companies. Disclosure, reproduction, copying, distribution and/or other use are subject to agreement by
Cobham Aerospace communication.
STE-2442-88-281-04 Appendix Outline drawing Page 1/1
CHELTON Antennas trading as Cobham Aerospace communication.
www.cobham.com/aerospace-communications
The content of this document as well as any associated intellectual property are proprietary and confidential to Cobham Aerospace
communication and /or its affiliate companies. Disclosure, reproduction, copying, distribution and/or other use are subject to agreement by
Cobham Aerospace communication.
STE-2442-88-281-04 Appendix VSWR curve Page 1/1
CHELTON Antennas trading as Cobham Aerospace communication.
www.cobham.com/aerospace-communications
The content of this document as well as any associated intellectual property are proprietary and confidential to Cobham Aerospace
communication and /or its affiliate companies. Disclosure, reproduction, copying, distribution and/or other use are subject to agreement by
Cobham Aerospace communication.
STE-2442-88-281-04 Appendix Radiation Patterns
Page 1/5
The radiation patterns of two antennas are presented below:
• ATC/DME antenna before industrialization P/N 2407-89-03 S/N 240789-24889
• ATC/DME antenna after industrialization P/N 2439-89-00
Red: Azimuth plan at 960 MHz in VP (Eθ) of ATC/DME antenna P/N 2439-89 after industrialization
Blue: Azimuth plan at 960 MHz in HP (Eϕ) of ATC/DME antenna P/N 2439-89 after industrialization
Green: Azimuth plan at 960 MHz in VP (Eθ) of ATC/DME antenna P/N 2407-89 before industrialization
Purple: Azimuth plan at 960 MHz in HP (Eϕ) of ATC/DME antenna P/N 2407-89 before industrialization
Red: Longitudinal plan at 960 MHz in VP (Eθ) of ATC/DME antenna P/N 2439-89 after industrialization
Blue: Longitudinal plan at 960 MHz in HP (Eϕ) of ATC/DME antenna P/N 2439-89 after industrialization
Green: Longitudinal plan at 960 MHz in VP (Eθ) of ATC/DME antenna P/N 2407-89 before industrialization
Purple: Longitudinal plan at 960 MHz in HP (Eϕ) of ATC/DME antenna P/N 2407-89 before industrialization
CHELTON Antennas trading as Cobham Aerospace communication.
www.cobham.com/aerospace-communications
The content of this document as well as any associated intellectual property are proprietary and confidential to Cobham Aerospace
communication and /or its affiliate companies. Disclosure, reproduction, copying, distribution and/or other use are subject to agreement by
Cobham Aerospace communication.
STE-2442-88-281-04 Appendix Radiation Patterns
Page 2/5
Red: Transversal plan at 960 MHz in VP (Eθ) of ATC/DME antenna P/N 2439-89 after industrialization
Blue: Transversal plan at 960 MHz in HP (Eϕ) of ATC/DME antenna P/N 2439-89 after industrialization
Green: Transversal plan at 960 MHz in VP (Eθ) of ATC/DME antenna P/N 2407-89 before industrialization
Purple: Transversal plan at 960 MHz in HP (Eϕ) of ATC/DME antenna P/N 2407-89 before industrialization
Red: Azimuth plan at 1090 MHz in VP (Eθ) of ATC/DME antenna P/N 2439-89 after industrialization
Blue: Azimuth plan at 1090 MHz in HP (Eϕ) of ATC/DME antenna P/N 2439-89 after industrialization
Green: Azimuth plan at 1090 MHz in VP (Eθ) of ATC/DME antenna P/N 2407-89 before industrialization
Purple: Azimuth plan at 1090 MHz in HP (Eϕ) of ATC/DME antenna P/N 2407-89 before industrialization
CHELTON Antennas trading as Cobham Aerospace communication.
www.cobham.com/aerospace-communications
The content of this document as well as any associated intellectual property are proprietary and confidential to Cobham Aerospace
communication and /or its affiliate companies. Disclosure, reproduction, copying, distribution and/or other use are subject to agreement by
Cobham Aerospace communication.
STE-2442-88-281-04 Appendix Radiation Patterns
Page 3/5
Red: Longitudinal plan at 1090 MHz in VP (Eθ) of ATC/DME antenna P/N 2439-89 after industrialization
Blue: Longitudinal plan at 1090 MHz in HP (Eϕ) of ATC/DME antenna P/N 2439-89 after industrialization
Green: Longitudinal plan at 1090 MHz in VP (Eθ) of ATC/DME antenna P/N 2407-89 before
industrialization
Purple: Longitudinal plan at 1090 MHz in HP (Eϕ) of ATC/DME antenna P/N 2407-89 before
industrialization
Red: Transversal plan at 1090 MHz in VP (Eθ) of ATC/DME antenna P/N 2439-89 after industrialization
Blue: Transversal plan at 1090 MHz in HP (Eϕ) of ATC/DME antenna P/N 2439-89 after industrialization
Green: Transversal plan at 1090 MHz in VP (Eθ) of ATC/DME antenna P/N 2407-89 before industrialization
Purple: Transversal plan at 1090 MHz in HP (Eϕ) of ATC/DME antenna P/N 2407-89 before
industrialization
CHELTON Antennas trading as Cobham Aerospace communication.
www.cobham.com/aerospace-communications
The content of this document as well as any associated intellectual property are proprietary and confidential to Cobham Aerospace
communication and /or its affiliate companies. Disclosure, reproduction, copying, distribution and/or other use are subject to agreement by
Cobham Aerospace communication.
STE-2442-88-281-04 Appendix Radiation Patterns
Page 4/5
Red: Azimuth plan at 1215 MHz in VP (Eθ) of ATC/DME antenna P/N 2439-89 after industrialization
Blue: Azimuth plan at 1215 MHz in HP (Eϕ) of ATC/DME antenna P/N 2439-89 after industrialization
Green: Azimuth plan at 1215 MHz in VP (Eθ) of ATC/DME antenna P/N 2407-89 before industrialization
Purple: Azimuth plan at 1215 MHz in HP (Eϕ) of ATC/DME antenna P/N 2407-89 before industrialization
Red: Longitudinal plan at 1215 MHz in VP (Eθ) of ATC/DME antenna P/N 2439-89 after industrialization
Blue: Longitudinal plan at 1215 MHz in HP (Eϕ) of ATC/DME antenna P/N 2439-89 after industrialization
Green: Longitudinal plan at 1215 MHz in VP (Eθ) of ATC/DME antenna P/N 2407-89 before
industrialization
Purple: Longitudinal plan at 1215 MHz in HP (Eϕ) of ATC/DME antenna P/N 2407-89 before
industrialization
CHELTON Antennas trading as Cobham Aerospace communication.
www.cobham.com/aerospace-communications
The content of this document as well as any associated intellectual property are proprietary and confidential to Cobham Aerospace
communication and /or its affiliate companies. Disclosure, reproduction, copying, distribution and/or other use are subject to agreement by
Cobham Aerospace communication.
STE-2442-88-281-04 Appendix Radiation Patterns
Page 5/5
Red: Transversal plan at 1215 MHz in VP (Eθ) of ATC/DME antenna P/N 2439-89 after industrialization
Blue: Transversal plan at 1215 MHz in HP (Eϕ) of ATC/DME antenna P/N 2439-89 after industrialization
Green: Transversal plan at 1215 MHz in VP (Eθ) of ATC/DME antenna P/N 2407-89 before industrialization
Purple: Transversal plan at 1215 MHz in HP (Eϕ) of ATC/DME antenna P/N 2407-89 before
industrialization
Radiation patterns of P/N 2439-89 antenna (after industrialization)
and P/N 2407-89 antenna (before industrialization works)
CHELTON Antennas trading as Cobham Aerospace communication.
www.cobham.com/aerospace-communications
The content of this document as well as any associated intellectual property are proprietary and confidential to Cobham Aerospace
communication and /or its affiliate companies. Disclosure, reproduction, copying, distribution and/or other use are subject to agreement by
Cobham Aerospace communication.