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29 views

How do I get to KBIV?

Consider KBIV (Holland) in west Michigan: Now consider the ILS / LOC to Rwy 26 at KBIV: Questions: There is a note on the IAP: "Procedure NA for arrival on PMM VOR/DME airway radials 004 CW ...
1
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1answer
48 views

Why don't piston engines require as heat resistant materials as jet engines?

Piston engines often get away with using aluminium as their heat exposed material, while even the early jets required inconel to operate. Is that because the combustion takes only, for example, half ...
4
votes
1answer
378 views

Electrically heated windshields are mostly transparent, but their colors vary from light blue, yellow or light pink. Please explain

Found it on a quiz worded this way. No other details unfortunately. I can only assume it has to do with the heated element materials of tungsten or molybdenum reaction with film layer materials. ...
0
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0answers
16 views

Can someone explain how the FUEL MANIFOLD PRE FILL LOGIC system works on the CFM LEAP 1A engines for the A320NEO?

While reading through one of my companies operations notice regarding the LEAP 1A engine I came across this term. But my company hasn't been able to explain how this system works. Could someone help ...
3
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4answers
923 views

First time passenger flight by two pilots?

In this video, the captain proclaims after take-off: We were nervous about this, but takeoff went smoothly It was his first passenger flight in the A350, but still... not exactly what I would want ...
1
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0answers
47 views

Which dust size causes most damage to turbine engines?

I'm conducting some research on my bachelor's thesis on predictive maintenance and I have so far not been able to find a solution to the following question: Which size of dust is more damaging to the ...
0
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0answers
30 views

What is the engine shell temperature?

What are the highest temperature locations in the outer shell on an aircraft engine? Particularly, modern turbofans like the Trent 900 for example. I'm interested in the temperature constraints of ...
1
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0answers
24 views

What regulations govern UAV lights in Australia?

I'm a member of a student aviation club at my university, and we're working on a UAV. The club member working on our drone's power supply system has designed a system that uses externally-visible LED ...
1
vote
2answers
59 views

Can winglets be used to compensate the high induced drag created by a low aspect ratio wing?

I have read in some articles that the major advantage of having a high aspect ratio (AR) wing is to reduce the induced drag. If winglets main job is also to reduce the induced drag, how much drag does ...
-1
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0answers
20 views

Is 11.7HP engine is enough to build RC Coaxial Helicopter? [closed]

I would like to build a Remote Control Coaxial Helicopter for a delivery system using a Honda GX389cc 11.7HP engine. The gross weight will be 70kg. Will it work for me or not? And what propeller size ...
-1
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1answer
109 views

Why is Cockpit Voice Recorder (CVR) audio data not disclosed following a crash? [closed]

I found this website that provides a large database of CVR transcripts of various air disasters. On their description page, they explain the following concerning the disclose of the CVR data: Due to ...
0
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2answers
56 views

What is the correct term for the type of performance chart where curved lines are followed?

What is the correct term for the type of performance chart where, from a starting location, curved lines are followed to various reference points to eventually find a solution? For a specific example, ...
6
votes
1answer
152 views

Why didn’t the Me 163 experience the serious handling problems suffered by other similarly-designed semitailless aircraft?

Although the Messerschmitt Me 163 rocket-powered interceptor had a number of frequently-lethal features (its extremely-toxic, violently-reactive, enthusiastically-explosive hypergolic propellants; its ...
1
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4answers
164 views

Why did wings start to be made with aluminium skin instead of fabric?

Why did engineers start designing planes with aluminium skin on the wings instead of fabric covering? While the force of lift acts on the skin, to my knowledge it is not subject to high stresses
0
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0answers
52 views

Is there a publicly available database of all military airports in Europe? [closed]

Does anyone know of a publicly available database that lists all military airports including location in Europe? https://ourairports.com/ seems to be limited on that end. Thank you!
2
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2answers
121 views

How many active Cessna 172 aircraft (or any other make/model) are there in the United States?

I define "active" in accordance with the FAA's definition: "An active aircraft is one that flies at least one hour during the year." The Bureau of Transportation Statistics (BTS) ...
0
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0answers
40 views

Why max thrust without afterburner is called military power? [duplicate]

The jets before the merge starts with military power, which means max thrust before ab.Why named that way?
0
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1answer
94 views

Is it possible to tow a smaller aircraft (like a LSA with a non-functioning engine) with a more powerful towplane?

The idea is to move an otherwise flyable aircraft with a bad engine from an airstrip with no facilities, to an FBO with a AP mechanic available for an engine swap. Let's say perhaps 100-200 miles, VFR ...
0
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0answers
11 views

EASA Form 1 for LRU removed serviceable from Engine during Engine Shop-Visits

Is it allowable for an EASA 145 approved maintenance organisation of a commercial airline to remove and release a component as Serviceable with an EASA Form 1? To make it more specific, is it ...
0
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1answer
119 views

Why does the NASA X-57 need a “gust control system”?

Why are NASA's engineers concerned about gusts affecting the X-57? I understand that NASA is recommending automatic torque based prop speed control to be used in flight but also in gusty conditions. ...
0
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0answers
84 views

How many LRUs are there in modern aircraft like a Boeing 747 or an Airbus A380?

I work in the Avionics industry. I always wonder, how many Line-Replaceable Units (LRUs) are present in modern aircraft like A380 and Boeing 747. I understand that number of LRUs varies from customer ...
-1
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0answers
18 views

How you calculate the temperature scaling factor? [migrated]

Used to obtain the corresponding pressure at ambient temperature. Example when testing Proof or burst pressure to a given value at 300°F, but you will test with corresponding pressure (higher) to ...
0
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0answers
87 views

How much planform effects change local AoA?

Sweep Sweep has the effect of increasing the upwash on the outboard wing sections. As a wing is angled aft, flow over the outboard sections must pass by the low pressure on top of the wing sections ...
21
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6answers
6k views

What's this black rectangle painted on the side of a V-1 flying bomb?

A friend sent me a photo of the V-1 flying bomb on display at the Air Zoo in Kalamazoo. What's the black painted rectangle on the side of the fuselage? The writing isn't much help... Nicht auftreten ...
0
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2answers
78 views

What purpose does a control area really serve related to managing air traffic flow?

I can understand that we have control zones at busy airports to streamline the flow of landing and departing traffic. But in Control areas of many airports i have seen that routes go straight through ...
0
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0answers
32 views

I have this question about a density altitude sum that I can't work out. How do you work out density altitude? [duplicate]

So in this question they give you the QNH of 1025hPa, Temperature -4 degrees celsius and airfield elevation of 3850ft. I worked out the pressure altitude which is 3490ft. And now I can't work out the ...
0
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1answer
62 views

Where can I listen online to live VOLMET broadcasts?

Are there sites that stream live VOLMET broadcasts? I need to listen to the format but haven't have the time to put together an amateur radio.
0
votes
1answer
209 views

Can I take position behind a plane for V formation legally?

First, I must find a plane with the same capabilities to fly in its wake. As a pilot, what would I need to locate other planes near me? Or find and weight on a plane going in the direction with equal ...
2
votes
3answers
842 views

Are there two types of runway holding position sign?

I came across this section on runway holding position marking while reading Jeppesen Airway Manual, which got me very confused. My question is: Is Pattern B describing another type of runway holding ...
2
votes
1answer
189 views

If Sweden wants to export JAS39 to a 3rd country, will they have to get permission from the US govt.?

Does Sweden manufacture its own jet engine for JAS Gripen, or does it purchase engines from the USA? JAS39 C/D uses Volvo RM12 JAS39 E/F uses Volvo RM16 I read on the internet that Gripen's engine ...
2
votes
2answers
120 views

When not cleared straight in for a VOR approach, how is this type of procedure executed?

You are flying to the GDM VOR on a 097 heading. The ATC clears you for the approach, but does not specify straight in. The procedure turn is marked by the barb and specifies remaining within 10nm. My ...
4
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2answers
3k views

What are these “winglets” on the roof of the 737?

I circled the parts on the fuselage in red.
1
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1answer
260 views

What about a Plane-Train?

The Shanghai Maglev Train's max speed is 267 mph. Could a plane be made to follow a rail, surface area provided, if not an existing rail to travel along? How much faster could the heavily modified ...
0
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0answers
68 views

What happens when a “ground effect” plane approaches the sound barrier?

Does the shock wave inhibit or contribute to lift? What is the ideal speed to fly near or on the speed of sound while using the ground effect?
1
vote
1answer
126 views

What is the rejected takeoff procedure for a blown tire?

When I got a tire/wheel issue during takeoff, how should I execute the rejected takeoff procedure? Is it different than the typical rejected takeoff procedure for an engine out that is applying the ...
0
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0answers
79 views

Could a supersonic fighter upset or damage a 757 by close flight?

In another thread, we are discussing the events of 9/11/2001, and what options an F-16 pilot would have, if it became sadly necessary to force a 757 to crash. It is presumed the F-16 does not have ...
1
vote
1answer
123 views

What are the laws on photographing aircraft in Australia?

Are there any types of aircraft that I am forbidden from photographing aircraft. (Australian aircraft, primarily) in Australia? Are there regulations on what I do with the photographs I take? I assume ...
1
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2answers
92 views

How does one resume a VNAV climb in a B737 NG after being instructed to level off at an altitude below the Cruise altitude?

I am referring to a Boeing 737NG. Assuming I am on a VNAV climb but I am instructed by ATC to climb only to an altitude lower than my FMC Cruise altitude. After leveling off, how do I resume my VNAV ...
0
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1answer
70 views

Does thrust output in jet airplane remains constant when altitude increases?

I’m a noob so sorry for my ignorance. The question is: do we need (in jet airplane) to increase the throttle to maintain constant thrust output if we want to fly higher (not considering climb phase), ...
0
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0answers
32 views

What does the difference between a 'Mechanical Engineer' and an 'Aerospace Engineer' who both work on planes? [duplicate]

What does the difference between a 'Mechanical Engineer' and an 'Aerospace Engineer' who both work on planes? Does one focus more on something than the other?
3
votes
2answers
200 views

Does wing with bell lift distribution has negative lift at tips?

Does wing with bell lift distribution has negative lift at tips during cruising flight? Looking at this diagram, tips has very small lift but it is not negative. https://ntrs.nasa.gov/citations/...
1
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0answers
49 views

Why is the NAV ADR 1 ECAM caution a NO GO as per the MEL on the A320?

There isn't much more I can post about the question but in the MEL out of the 3 ADRs if ADR 1 fails on ground the MEL doesn't allow for a dispatch.
37
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2answers
7k views

What do pilots landing on aircraft carriers do when the ship is not visible due to weather?

Say an aircraft takes off of a carrier to do a mission somewhere, and upon returning to the carrier the pilot comes to find that a thick layer of fog has formed just above the surface of the water in ...
-4
votes
2answers
192 views
+50

What are those aircraft flying over my house?

I took pictures of 6 aircraft at Long Beach, California. Although I see them a lot of times, I have yet to hear the name. These photos were taken on August 6, 2020: A blue and orange biplane on 5:34 ...
4
votes
2answers
175 views

Do nose cones work well at high angles of attack?

On a lot of fighter jets, I see a heavily slanted intake, such as the F-15. I always thought this is to help ingest air at high angles of attack. However, what about something like the MiG-21? There'...
2
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1answer
42 views

Is a CFII required in order for a flight Instructor to provide training for added class ratings?

Must a flight instructor have a CFII to provide multi-engine add-on training to a customer meeting the following criteria: Holds a commercial pilot certificate with a single engine land class rating. ...
-2
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1answer
113 views

Is 1,000ft vertical separation in a sparse airspace increasing risk unnecessarily? [closed]

On Saturday the 8th of August 2020 at 19:40:10 UTC, two flights flying in opposite directions, in the same corridor over India were vertically separated by just 1,000ft. The flights were SQ322 from ...
1
vote
1answer
75 views

What are the Radarless approach control services in the United States?

I was recently in Twin Falls, ID at KTWF. There is no radar for approach control services. All instrument approaches are full procedures and aircraft must report all requested fixes. There is Salt ...
51
votes
3answers
11k views

The F-16s that were scrambled to intercept United 93 did not have time to arm the jets, so the pilots were going to “ram it” how does that work?

The Wikipedia page says Two F-16 fighter pilots from the 121st Fighter Squadron of the D.C. Air National Guard, Marc Sasseville and Heather "Lucky" Penney, were scrambled and ordered to ...
0
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0answers
114 views

Why El Al uses all-Boeing aircraft? [closed]

In their operations, El Al operates all-Boeing aircraft on their fleet, is this an airline policy or political reasons? EDIT: The composition of this fleet is as follow (according to wikipedia): 16 ...

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