1. A method of installing an aerodynamic control element on an aircraft structure, the aircraft structure comprising a rear spar, an upper cover which is attached to the rear spar and overhangs to its rear, and a lower cover which is attached to the rear spar and overhangs to its rear, the method comprising in any order:
a. attaching a first hinge rib arm to a first one of the covers;
b. assembling a hinge rib by connecting the first hinge rib arm to a second hinge rib arm;
c. attaching the second hinge rib arm to a second one of the covers; and
d. pivotally mounting the aerodynamic control element to the hinge rib.
2. The method of claim 1 further comprising:
e. before step b. andor step c., installing one or more elongate lines which extend in a span-wise direction along the aircraft structure.
3. The method of claim 1 comprising performing step a. andor step c. before step b.
4. An aircraft structure comprising;
a rear spar,
an upper cover which is attached to the rear spar and overhangs to its rear;
a lower cover which is attached to the rear spar and overhangs to its rear,
a hinge rib assembly comprising:
a first hinge rib arm attached to a first one of the covers; and
a second hinge rib arm connected to the first hinge rib arm and attached to a second one of the covers; and
an aerodynamic control element pivotally mounted to the hinge rib assembly;
wherein the first and second hinge rib arms are separate parts.
5. The structure of claim 4 wherein the first hinge rib arm is pivotally connected to the second hinge rib arm.
6. The structure of claim 5 wherein the second hinge rib arm is pivotally connected to the second one of the covers.
7. The structure of claim 4 wherein the first hinge rib arm has a greater maximum cross-sectional area than the second hinge rib arm.
8. The structure of claim 4 wherein the first and second hinge rib arms are also each attached to the rear spar.
9. The structure of claim 4 wherein the upper and lower covers converge towards each other aft of the rear spar.
10. The structure of claim 4 further comprising one or more elongate lines passing through a space between the hinge rib arms in a span-wise direction.
11. The structure of claim 4 wherein one of the covers comprises one or more ramps along which the thickness of the cover decreases.
12. A method of disassembling the structure of claim 4, the method comprising disconnecting the second hinge rib arm from the first hinge rib arm andor from the second one of the covers whilst keeping the first hinge rib arm attached to the first one of the covers.
13. The method of claim 12 further comprising: detaching the first andor second hinge rib arm from its respective cover after the second hinge rib arm has been disconnected.
14. The method of claim 12 further comprising removing or repairing an elongate line passing through a space between the hinge rib arms in a span-wise direction.
15. A hinge rib assembly for pivotally connecting an aerodynamic control element to an aircraft structure, the hinge rib assembly comprising: a first hinge rib arm connected to a second hinge rib arm, wherein the first and second hinge rib arms are separate parts.
16. The hinge rib of claim 15 further comprising a pivot hole in the first andor second hinge rib arm.
17. The hinge rib of claim 15 wherein the first hinge rib arm extends longitudinally at an acute angle to the second hinge rib arm.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A substantially rectangular shaped power amplifier module, comprising:
a first input terminal configured to receive a first input radio frequency signal;
a first power amplifier configured to produce a first amplified radio frequency signal in response to the first input radio frequency signal under the control of a bias control signal;
a first output terminal configured to output the first amplified radio frequency signal;
a second input terminal configured to receive a second input radio frequency signal, wherein the first input terminal and the second input terminal are disposed on a first side of the substantially rectangular shaped power amplifier module;
a second power amplifier configured to produce a second amplified radio frequency signal in response to the second input radio frequency signal under the control of the bias control signal;
a second output terminal configured to output the second amplified radio frequency signal, wherein the first output terminal and the second output terminal are disposed on a second side of the substantially rectangular shaped power amplifier module;
a first power supply terminal disposed on a third side of the substantially rectangular shaped power amplifier module and configured to supply power to the first power amplifier;
a bias control terminal disposed on the third side of the substantially rectangular shaped power amplifier module and in communication with the first power amplifier and the second power amplifier, wherein the bias control terminal is configured to receive the bias control signal;
a second power supply terminal disposed on a fourth side of the substantially rectangular shaped power amplifier module and configured to supply power to the second power amplifier; and
a power sensing terminal disposed on the fourth side of the substantially rectangular shaped power amplifier module, wherein the power sensing terminal is configured to output a power sensing signal in response to the first amplified radio frequency signal and the second amplified radio frequency signal.
2. The substantially rectangular shaped power amplifier module of claim 1, further comprising one or more ground terminals disposed on the first side of the substantially rectangular shaped power amplifier module and configured to provide ground connections to the first power amplifier and the second power amplifier.
3. The substantially rectangular shaped power amplifier module of claim 2, further comprising one or more ground terminals disposed on the second side of the substantially rectangular shaped power amplifier module and configured to provide ground connections to the first power amplifier and the second power amplifier.
4. The substantially rectangular shaped power amplifier module of claim 1, wherein the first side and the second side are disposed at the opposite sides of the substantially rectangular shaped power amplifier module.
5. The substantially rectangular shaped power amplifier module of claim 1, wherein the third side and the fourth side are disposed at the opposite sides of the substantially rectangular shaped power amplifier module.
6. The substantially rectangular shaped power amplifier module of claim 1, further comprising a ground terminal on a first surface of the substantially rectangular shaped power amplifier module.
7. The substantially rectangular shaped power amplifier module of claim 6, wherein the ground terminal covers a majority of a first surface of the substantially rectangular shaped power amplifier module.
8. The substantially rectangular shaped power amplifier module of claim 1, wherein the first side and the third side form a corner of the substantially rectangular shaped power amplifier module.
9. The substantially rectangular shaped power amplifier module of claim 1, further comprising:
a first bias control circuit configured to receive the bias control signal from the bias control terminal to control biasing of the first power amplifier; and
a second bias control circuit configured to receive the bias control signal from the bias control terminal to control biasing of the second power amplifier.
10. The substantially rectangular shaped power amplifier module of claim 1, further comprising one or more unconnected terminals.
11. The substantially rectangular shaped power amplifier module of claim 1, wherein the first side approximately 1.6 mm in width and the second side is approximately 2 mm in length and has a height of approximately 0.5 mm.
12. The substantially rectangular shaped power amplifier module of claim 1, wherein at least one of the first input terminal, the second input terminal, the first output terminal, the second output terminal, the bias control terminal, and the power sensing terminal has dimensions of approximately 0.2 mm by 0.2 mm.
13. The substantially rectangular shaped power amplifier module of claim 1, further comprising a ground plane with dimensions of approximately 1.2 mm by 1.6 mm.
14. The substantially rectangular shaped power amplifier module of claim 1, wherein the input impedance for the first input radio frequency signal is 50 ohm and the output impedance for the first output radio frequency signal is 50 ohm.
15. The substantially rectangular shaped power amplifier module of claim 1, further comprising:
a power sensing circuit configured to detect the first amplified radio frequency signal and the first amplified radio frequency signal to produce the power sensing signal at the power sensing terminal.