Questions tagged [feature-identification]

For questions about identifying a feature or design on an aircraft.

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12
votes
4answers
4k views

What are these grilles in the passenger cabin of this 787?

Below the windows, ahead of the seat, there are small grilles. Look: Source: Airliners.net What are those for?
6
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1answer
139 views

What is the use of this object in the cockpit of a Bombardier Dash 8 Q400?

What is the use of this object in the cockpit of a Bombardier Dash 8 Q400?
33
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1answer
3k views

What's that in front of the overhead panel?

There is that thing I have see a few pilot using it. it can be pulled outside and then inside. what's that and what's the use of it?
35
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1answer
8k views

What is the strange object on 737-800 exterior, on the aft right side?

I was unable to locate this on a "real life" picture of the aircraft, so have attached an image from my simulator. What is the function/purpose of this object on the exterior of the 738? It seems like ...
43
votes
2answers
24k views

What is this flange on the engine?

Flying home from the Denver ComiCon, on a 737, I saw an angled flange on the engine. Could you describe its purpose? Photos by CGCampbell licensed CC0
6
votes
2answers
2k views

What is this tube-like thing protruding from under an A330's wing?

I took a flight for a business travel and I saw something new for me on the wing. I highlighted that part in a red circle in the picture below. The aircraft is an Airbus A330-200. What is it and its ...
5
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1answer
149 views

Can you identify this antenna on a Cessna 172N?

Does anybody know what this antenna is used for? I suspect a glideslope antenna but I am not totally sure.
42
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3answers
9k views

Why does the B-2 Spirit have a pattern of thin white lines?

Northrop Grumman's B-2 Spirit bomber is mostly black or dark grey, but has a symmetric pattern of distinctive, thin white lines painted on its wings and fuselage. I have not been able to find anything ...
6
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0answers
157 views

What are these blades on the engine cowling of a Wittman Tailwind?

The Florida Air Museum in Lakeland has a Wittman W-8 Tailwind with four wooden, propeller-like blades on the engine cowling: Source: own work What are the blades for? It's an experimental aircraft ...
4
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2answers
386 views

Is the shape of the Bell X-1 wing on Virgin Galactic's VSS Unity's artwork correct?

This answer to the Space SE question What do these patterns on Virgin Galactic's VSS Unity represent, and how are they applied? indicates that one of the aerospacecraft representations on the Unity is ...
41
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2answers
8k views

What are these five indicators at the front of the 737 passenger cabin?

As a passenger I noticed set of five indicators on ceiling at the front of the 737 passenger cabin. They are: red, yellow (or white), blue, white, red. Red ones seem to be coupled together (what ...
7
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2answers
2k views

What are these two tail elements of the Avro RJ100?

What are these two tail-side elements of British Aerospace Avro RJ100 and what is their function: Photo source: Eric Verplanken, jetphotos.net.
10
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1answer
566 views

What is the purpose of these movable panels on the MiG-35?

The MiG-35 has movable panels on the LERX (leading edge root extensions). There are a number of images around the web showing these panels deployed during slow flight and retracted otherwise. When do ...
0
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0answers
80 views

What is that sharp thing on the wall of the air intake of the F-15? [duplicate]

What is that sharp thing on the wall of the air intake of the F-15?
-9
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1answer
145 views

What is this object name and how it works?

Photo is from here. I believe that it something like steer on a car. But seems that it has function or control more than just turning left or right. Is any different between left and right?
11
votes
1answer
2k views

What are the bars protruding from this C-130?

This C-130 was photographed on approach to Ellington Field (EFD), Texas. What are the protruding, truss-supported bars aft of and below the wing? There's an airshow coming up in ~3 weeks at EFD, so ...
2
votes
1answer
224 views

What “jet engine” is featured in this ad that Simone Giertz made for a phone?

Simone Giertz's video "Having Dinner With a Jet Engine/Leaf Blower" has a number of views of the turbine, on a cart, with a ducted fan attached. This side view is the best view, in my opinion. I put ...
6
votes
2answers
195 views

What is the purpose of the vertical splitter and the NACA duct at the MQ-9 Reaper engine scoop?

The engine scoop/intake on the MQ-9 features a vertical splitter at the inlet face, as well as another smaller NACA duct on the top cowl surface just aft of the inlet lip. I am guessing the former ...
29
votes
1answer
8k views

What are those bumps on top of the Antonov-225?

What are those bumps on top of the Antonov-225? What are they for? And what are they called?
6
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1answer
305 views

What is the device at the tail of the F-16 Block 60?

The F-16 Block 60 has a lot of advancements, one of which is the device at the tail. What is it? For clarification, I believe all these vents (second image) are for said device.
9
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3answers
1k views

What is that missing instrument on a Beechcraft 1900C?

(Full image) Beechcraft 1900C. I cannot find the name of the missing instrument even in the manuals.
14
votes
1answer
2k views

What are the tube shaped structures on the back of the fuselage of this 737?

A previous question asked what the little metal plates between the horizontal and vertical stabilizer were (they are vortex generators), however I am much more interested in what the gray tube shaped ...
12
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1answer
2k views

What is the purpose of the extending wingtip panels on the Su-25?

Is it to increase the air resistance of the aircraft? Source: reddit.com
10
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1answer
2k views

What are the protrusions on the sides of the fuselage of the F-16I?

I've noticed that the F-16I has these protrusions on the sides of its fuselage. What purpose do they serve?
30
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3answers
10k views

What is this gigantic dish at Ben Gurion airport?

As the title asks, what is this thing for? Have never seen anything like it at other airports I've been to.
12
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1answer
593 views

Does the B-1B Lancer have controllable canards?

These three pictures shows the B-1B Lancer's canards and its elevators. I am not sure to call that feature a canard as the jet also has elevators. In my limited understanding, canard and elevator are ...
13
votes
1answer
3k views

Why does this Strikemaster have a textured leading edge?

I was at Duxford recently, and spotted a Jet Provost Strikemaster that had a rough texture applied to a portion of the leading edge of the wing. Why was this applied?
3
votes
1answer
199 views

What is the function of activating an individual elevator on the B-1B Lancer?

This B-1B Lancer's picture I captured from this Youtube video. The control axes is from Wikipedia. As we know, the three "conventional" axes are as follows: Roll axis controlled by aileron, Pitch ...
2
votes
0answers
130 views

What is the small openining on the bottom right of door 4R of an Airbus A321? [duplicate]

While observing taxiing A321 planes, I noticed that they had an open hatch-like opening on the bottom right of door 4R. I marked it here on a picture I found online. I could not locate it in the ...
13
votes
1answer
3k views

Why do the A220 cockpit seats have a cutout?

Why do cockpit seats on the A220 have a cutout on the bottom cushion? The answers to Aircraft pilot's seats: what is the notch for? explain that these cutouts allow for easier maneuverability of the ...
6
votes
1answer
355 views

What are these protruding things on this Russian military aircraft (MiG-31BM)?

See the video In the video it is clear that the jet takes off and lands with all these 3 things "open/stretching out" (so it seems to fly just like that - not retracting them). Here is Wiki on that ...
4
votes
1answer
156 views

How much can a plane benefit from another planes wake?

Could a smaller plane fly in a V formation behind a much larger plane to reduce fuel consumption significantly more than a plane its own size? At what point does flying in a larger planes wake become ...
6
votes
1answer
3k views

What are these protruding elements from SU-27's tail?

I recently saw in person SU-27 belonging to the Ukrainian Air Force. I spotted some protruding elements from its tail and I'm wondering what are they called and what do they do?
6
votes
2answers
206 views

What's This Cable Connecting Cockpit to Vertical Stabilizer in Air Tractor AT-401?

This is a picture of an AT-401 Sprayer Airplane I was wondering what's this steel-string stretching from cabin's windshield to the top of the vertical stabilizer ...
8
votes
2answers
464 views

What are those sensors on the forward A321neo fuselage?

What are those sensors on the forward (Airbus) A321neo fuselage? If it helps, this is WOW air's TF-DTR.
16
votes
1answer
8k views

What are these panels underneath the wing root of a A380?

What are these open panels underneath the wing root of a A380 (right above the person standing under the aircraft)? Are they ram air exhausts of the air conditioning packs?
9
votes
1answer
668 views

What are the evenly-spaced “bumps” on Bell X-1 tailplane?

The tailplane of the Bell X-1 had four evenly-spaced "bumps" on each side--what was their purpose? (Screen shot from The Right Stuff.) Another image If they're hinges for the elevators, then how ...
4
votes
1answer
2k views

What is this flat plate sticking out of the tail of Learjet 24D?

What is this protrusion on the tail of Learjet 24D (shown just above the avro museum logo) and what is its function? Learjet 24D Tail closeup Zoomed out image of the Learjet tail Source: images ...
8
votes
1answer
536 views

What is this hole on the F-22 Raptor?

I noticed this little hole that is right in front of the cockpit window of the F-22 Raptor. In some photos, it seems to be closed, while in other photos, it's open. Does anyone know (or think they ...
2
votes
1answer
283 views

What is this square hole for? [duplicate]

When waiting to depart Edinburgh today I noticed a square hole (looked to be something that can be opened and closed) on the rear of the right side of the aircraft. Never seen it before and no idea ...
29
votes
1answer
4k views

What is the metal bit in the front of this propeller spinner?

What is that grey spirally bit in front of the propeller mounted on this Shvetsov ASh-62 radial engine?
1
vote
1answer
138 views

What is the reason for the strips on the nose of the Embraer E175 [duplicate]

Recently I boarded a KLM flight with an Embraer E175, when I noticed the strips on the nose (see image, marked with the black circle). Own image This Embraer E190 also has it: Image source ...
6
votes
1answer
526 views
9
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1answer
1k views

What are these clip-like things?

With me becoming an aviation enthusiast and AirBerlin becoming insolvent, my mom has gone on a hunt for deals on what I can best describe as AirBerlin merch (old uniforms, shirts, skirts, belts and ...
3
votes
1answer
339 views

How does F/A-18 autotrack work?

This is about the alleged "UFO" video. However, I'm not interested in speculation about what exactly the aircraft being tracked in the video is. What is "autotrack" in an F/A-18 Super Hornet? Does it ...
2
votes
1answer
386 views

Why does the F-4's rear seat have a weather scope eyepiece?

In the front seat. The pilot has a flat screen radar scope that shows both the planes and the weather. But on the rear seat. The weather scope has an giant eyepiece. Perhaps glare protection? (...
7
votes
2answers
332 views

What are the two blisters on F-35 upper wing surface?

For all of the F-35 models you can find pictures with and without a blister on the upper wing surface. I'm guessing that it is sensors for the missile warning system that were retrofitted later on, ...
24
votes
5answers
9k views

Is this one of the engines from the 9/11 aircraft?

I ran across an interesting set of post-9/11 photos and I noticed this picture in particular: The closest item on the truck looks a bit like an airplane engine, but I can't tell for sure. Is it one ...
5
votes
1answer
225 views

What is that Boeing 757 custom cockpit interface?

Cropped; flickr.com, 2008 The photo is taken in cruise. The selected display shows takeoff data. There is also a send button (which hints at a datalink capability for communicating values). I ...
2
votes
1answer
178 views

What are these engine gauges in the Comet 4 for?

What are these gauges on the Comet 4's engine-gauge panel (between the captain's and first officer's instruments, above the throttle levers), marked "POWER LOSS INDICATOR", for? (Sorry for the blurry ...