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1

Staged means that fuel is delivered "after launch" instead of immediately. This terminology is more familiar from staged rockets: At engine idle conditions, the electronic engine control (EEC) unit sends a signal to the BSV which then shuts off fuel flow to the ten staged fuel nozzles. As a result, the ten unstaged nozzles receive a higher fuel volume ...


7

Short answer: They're antenna(s) for the onboard VHF radio(s). Airplanes aren't actually required to have radios. But, if you want to fly into certain classes of airspace, you must have at least one VHF radio on board, to communicate with air traffic control. A lot of planes (in fact, I would say the majority of them) actually have two radios installed. ...


3

The vertical tail of the A380 in the last photo is swept back. Surface sweep is used for high subsonic wings and tail surfaces, to postpone the effects pf compressibility when approaching the speed of sound. And when the vertical tail is swept back, the rudder hinge will be at an angle as well: the rudder chord will be a relatively constant percentage of the ...


0

Here is an explanation of a contra-rotating propeller, explained its advantage and disadvantage. 2 - Why contra rotating propellers? As explained, each blade of an airplane propeller is essentially a rotating wing. As a result, the propeller blades are like airfoils and produce forces that create the thrust to pull, or push, the airplane through the air. ...


-1

The rate of spin of RAT in the no-load condition is closely related to TAS, so by comparing this to IAS, you can calculate altitude, or at least density altitude.


1

You're after the landing gear oleo Source Control Drawings. You need to contact Cirrus' tech support and request the drawings from their engineering organization via their support organization, who may or may not want to help you, or may charge for them if they do. I expect they won't want to provide them because they'll suspect that it's for someone who ...


7

No, the 737 NG stabilizer trim system does not feedback from AOA. My source of information comes from this LinkedIn Slide Share and corroborated by this online FCOM. There are several ways through which the stabilizer can be commanded: Manually via the trim switches. Manually via the trim wheels. Automatically via the Speed Trim System (STS). A helpful ...


2

Note that the assertion "It can only receive signal if the transmitting antenna is not exactly in front of it" is wrong. The most sensitive direction for receiving is in fact exactly in front of the antenna, so if the incoming beam is directly in line with the yagi shafts, the maximum signal strength will be received. A parabolic antenna would be bigger ...


1

First, both parabolic & Yagi antennas are "directional" in that their main lobe is designed to have high gain in a limited direction. this is because all antennas have to trade the width of their main beam(s) with the amount of gain in that beam. you can either put a little power everywhere or a lot of power in one direction. that being said the picture ...


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