Daily Aviation Fact, Question or Situation

[ScottyB]

Hi everyone,

I have recently seen a page on Facebook that has daily aviation trivia, facts, questions or a situation you could find yourself in that requires a "what would you do?" answer.

As a real world [studying] pilot, I find them very interesting and helpful a lot of the time. So I thought I could post a few here

Enjoy


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1. Question

What are the names and order of the strokes in a 4-stroke piston engine (as found in most GA aircraft)?


2. Situation

What would you do:

You are faced with low fuel, approaching nightfall, deteriorating weather, or any combination of hazardous conditions, what would do if the nearest airport would not grant you a special VFR clearance to land there (you are not instrument rated)

3. Did you Know?

The velocity of a Tropical Revolving Storm (travelling speed, NOT rotation speed) is...

Velocity (kts) = 1/2 * Latitude of tropical revolving storm

So when the TRS is located at 60N ---> travels at 30kts

(a TRS will not occur between 6N en 6S, this is because there is no coriolis force on the equator)

[Charl]

Always a sucker for a quiz:

1. What are the names and order of the strokes in a 4-stroke piston engine (as found in most GA aircraft)?

Suck Squeeze Burn Blow

2. What would you do
Sooner or later, you're gonna have to land - might as well be right now!

3. Did you Know?
Did not know that, might not be true all the way to the South Pole?

[Mith18]

1. Question

What are the names and order of the strokes in a 4-stroke piston engine (as found in most GA aircraft)?

Suck, Squeeze, Bang, Blow
Or if you've recently studied ATK, Intake, Compression, Ignition, Exhaust
2. Situation

What would you do:

You are faced with low fuel, approaching nightfall, deteriorating weather, or any combination of hazardous conditions, what would do if the nearest airport would not grant you a special VFR clearance to land there (you are not instrument rated)
Request that you immediately land, if the airport is quiet, you need to land.

3. Did you Know?

The velocity of a Tropical Revolving Storm (travelling speed, NOT rotation speed) is...

Velocity (kts) = 1/2 * Latitude of tropical revolving storm

So when the TRS is located at 60N ---> travels at 30kts

(a TRS will not occur between 6N en 6S, this is because there is no coriolis force on the equator)

No I didn't.

[Charl]

Now if your engine were to

BANG
instead of

BURN,
you might find yourself in Situation 2. or worse!

[Dash8captain]

2. have a cry

[Squawk1200]

Question #2

Declare an emergency (Providing there are no other suitable alternate aerodromes nearby) You will then be afforded both priority and assistance.

[Ian Warren]

QUOTE (Dash8captain @ Feb 22 2013,6:41 PM) <{POST_SNAPBACK}>

2. have a cry

Think thats what Paul Holmes did

[chopper_nut]

You guys need to fly helicopters, if you need to land somewhere, you just do it. Go and land next to the nearest house and borrow their phone, stay for a cup of tea while your ground crew comes and picks you up, have a go at the farmers daughter and go home to bed. Easy solution.

[Ian Warren]

QUOTE (chopper_nut @ Feb 23 2013,10:32 AM) <{POST_SNAPBACK}>

have a go at the farmers daughter and go home to bed. Easy solution.

The Farmers daughters .... what was the question again

[ZKIWI]

QUOTE (ScottyB @ Feb 21 2013,7:57 PM) <{POST_SNAPBACK}>

3. Did you Know?

The velocity of a Tropical Revolving Storm (travelling speed, NOT rotation speed) is...

Velocity (kts) = 1/2 * Latitude of tropical revolving storm

So when the TRS is located at 60N ---> travels at 30kts

(a TRS will not occur between 6N en 6S, this is because there is no coriolis force on the equator)

Not sure 60N or 60S are really tropical locations, sub arctic or sub antarctic perhaps, although with the current weather may the tropics have slipped slightly.

[ScottyB]

FACT

A bit about DME....

DME (Distance Measuring Equipment)

Operates in the UHF (Ultra High Frequency) band 1041-1108 MHz
(remember its around 1 GHz)

**OPERATING RANGE = line of sight;
1,23 x (sq. root Transponder height + sq. root Receiver height)

**ACCURACY (modern DME's) = ICAO recommends accuracy of less than the sum of 0.25NM plus 1.25% of the distance measured.

interrogation 1041-1045 MHz
response 978 - 1108 MHz

DME is frequency paired with VOR and ILS.

DME has X and Y channels (used for military operations)
The difference between X and Y signals is the response-frequency of the ground station;
-Interrogation on an X channel will be "answered" on a frequency that is 63MHz lower.
-Interrogation on a Y channel will be "answered" on a frequency that is 63MHz higher.
(this prevents echo-signals)
DME is very efficient because it does not send-out anything when the aircraft isn't sending an interrogation signal.

MAXIMUM number of aircraft on 1 channel = 100.
-to distinguish all of the differen 100 users there is a UNIQUE pulse signal for each of them (PPM: Pulse Position Modulation).
Because of PPM, the aircraft is able to find it's response-signal.

When the DME receives its pulse signal, it operates in TRACKING MODE.
When the DME receiver (in the aircraft) lost its pulse signal, it will extrapolate in MEMORY MODE.