兰州市人社局召开全市劳动保障监察工作推进会
80 questions from the last 30 days
14
votes
4
answers
3k
views
Why a pull leverlock switch VS a Flip Up Switch Guard Cover?
Looking at the 787's throttle quadrant, I noticed that the STAB control switch uses a typical red flip-up toggle switch guard safety cover while for the FUEL CONTROL there is a pull leverlock switch. ...
- 7,643
14
votes
3
answers
7k
views
How do the fuel cutoff switches on the Boeing 787 work?
All I have heard about these switches is that they cannot accidentally be activated, but not why. How do you activate them?
- 6,527
18
votes
2
answers
3k
views
What is this pilot inspecting, and what is she using to inspect it?
Came across this flight review (@ 1:18) on a beautiful TECNAM P2012, and noticed the pilot is walking around with what appears to be a mirror and a stick (which I have never seen).
Is this normal? It ...
- 7,643
7
votes
3
answers
2k
views
Can you yaw an airplane by only using differential thrust?
In a typical twin engine airplane, can one yaw the airplane by only using differential thrust?
- 7,643
18
votes
3
answers
2k
views
When was the last time all humans were on the ground not in the air?
A question was recently asked in Space Stack Exchange (paraphrased) "When was the last time no humans were in space?" That question has a date specific answer, which is October 31st, 2000 ...
- 1,502
20
votes
1
answer
3k
views
What are these orange and green solid circles painted on a taxiway?
At Lakeland International Airport (KLAL), on taxiway A near the FBO, google map shows a green solid circle and an orange solid circle are painted. What are they?
- 1,374
8
votes
3
answers
1k
views
What is the microscopic mechanism by which as the Mach value increases above 0.3, the density vary significantly?
Why does density vary significantly as the Mach number increases and the effects of compressibility increase? I can see from several equations that Δρ/ρ=O(M^2), however, I would like a comprehensive ...
9
votes
3
answers
1k
views
Which setup causes less drag underneath an airplane?
Say you want to install something like one of those big cameras typically used in large aerial vehicles, and you have the flexibility to install it oriented horizontally or vertically.
Which setup ...
- 7,643
5
votes
2
answers
2k
views
Civilian airplanes with inside fuselage jet engines
Like the Stratos 714 inside fuselage engine design, are there any other civilian airplanes examples alike?
- 7,643
6
votes
2
answers
331
views
When you turn a transponder off, can you still find your destination? Or do you suffer from orientation issues?
Air Traffic Control radars track aircraft position and allow controllers to provide navigational assistance. My question is whether or not there is any ATC radar positional data fed back to an ...
- 69
9
votes
1
answer
2k
views
Does the fuel switch directly control the fuel valve?
Do the switches directly manipulate the valves? There is some sort of connection between the fuel switches in the cockpit and the fuel valves to the engine. Is that a direct physical connection? When ...
- 93
11
votes
4
answers
2k
views
Why is the C172’s wingtip downturned?
The wingtip of the C172s is dropped, or down-turned. Especially the trailing edge part is curved downward. Is there any specific reason for this?
(my wild guess is aerodynamic reason)
- 1,374
11
votes
1
answer
809
views
Why are the Lancair speed brakes so different?
Looking at different airplanes most airplanes with speed brakes have similar aileron-like speed brakes. Why does the Lancair use this different design instead of the more common ones?
source
- 7,643
6
votes
3
answers
731
views
Lower Specific Excess Power, Higher Altitudes Achievable?
This diagram plots the Ma, Altitude and Specific Excess Power (SEP) of a specific military aircraft:
Why does a lower SEP allow for higher altitudes and a larger range of flight speed?
- 313
9
votes
1
answer
944
views
What does "enter the hold at arden" mean
So I'm a fan of Cabin Pressure. A Radio 4 sitcom set on a private jet, which boasts an aviation consultant in the credits of every episode.
A handful of times, the pilots are instructed to "enter ...
- 775