Questions tagged [jet]

*Jet* is a generic, informal term for an aircraft with jet propulsion. In a civilian context it may refer to an airliner or small private jet.

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How is %MAC affected by flap/slat position on swept wing, transport category aircraft?

If you watch the slats and flaps deploy on a swept wing, transport category aircraft, and you mentally draw a chord line, you'll notice that it's changing through the slats/flaps deployment schedule. ...
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3 votes
0 answers
225 views

What is the highest operational ceiling for a nuclear scramjet?

A similar question is: What is the highest operational ceiling for an air-breathing jet engine? The answers point to scramjets. Cited reports focus on combustion kinetics. The Wikipedia Scramjet page: ...
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3 votes
4 answers
718 views

What is maximum acceleration that can be achieved by afterburner in level flight?

I am wondering how a fighter jet (let's take F-22 for example) would compare to other vehicles in terms of acceleration while in flight. For cars and motorcycles, achieving 0-100 KPH in 2 seconds is ...
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2 votes
0 answers
132 views

Overheating (fire thrown out of the nozzle) [closed]

At first I copied https://www.jetcat.de/en/productdetails/produkte/jetcat/produkte/hobby/Engines/P160_rxi_b Where I manufactured and installed all the parts and they are very similar to the original ...
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7 votes
1 answer
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What are all the composites used in the making of fighter jets? What is the green and yellow material on the aircraft in the pictures below? [closed]

Below given are images of various fighter jet manufacturing.
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13 votes
9 answers
7k views

Were propeller airplanes significantly more "scary" to fly in compared to modern jet ones?

I've flown exactly once in my life. It was in 2004, with a commercial jet. Not a "jumbo", but a normal-sized jet plane in common use for cheap flights in that year. (Well, twice if you ...
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How to calculate turbojet thrust at variable altitudes and mach numbers?

I am interested in developing a flight model in jbsim. jbsim requires a thrust table similar to as follows, with varying mach and altitude numbers (with thrust as a fraction of max): ...
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5 votes
1 answer
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What is this jet seen in the Falcon Crest TV series?

This is another jetliner from "Falcon Crest" I'm trying to identify. It was visible briefly in episode # 194 <8.11> "True Confessions" (1989). Thanks for your help!
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19 votes
1 answer
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What is this jetliner seen in the Falcon Crest TV series?

I'm trying to identify this jetliner from the "Falcon Crest" TV series filmed in 1984 It's from episode # 068 <3.28> "Ashes to Ashes". This is the only scene featuring the ...
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0 answers
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What is the first fighter jet aircraft which carried out a night bombing mission?

Does anyone know in which occasion it was carried out and the date which it was carried out? Night bombing began in World War I and was widespread during World War II. A number of modern aircraft ...
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15 votes
1 answer
3k views

Can a jet stream make a subsonic plane fly at a supersonic speed relative to the ground?

If a plane flies with a jet stream, its speed relative to the ground is the sum of the speed of the jet stream and the speed of the plane relative to the air in the jet stream. If the speeds that are ...
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9 votes
5 answers
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Do jet aircraft have a better glide ratio than propeller aircraft in general? If so, why?

Being fond of aviation, I play with software simulators a lot. I have noticed that while jets seem to be able to glide for a long distance even at zero throttle, propeller aircraft need to be ...
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3 votes
4 answers
888 views

Why so much throttle work on navy fighter during final approach?

• Look at his left hand: why so much throttle work while flying? What is he doing? • Is the throttle response very slow? It seems to me that the fighter don't accelerate so much when he gives full ...
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-1 votes
1 answer
166 views

Are there jet aircraft for whose flights astrodynamics must be taken into account? [duplicate]

Civilian jet airliners don't need to push their yokes down to follow the curvature of the Earth because within the atmosphere the curvature is accounted for by automatical systems, right? I wonder ...
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2 votes
1 answer
235 views

Does anyone know more about the 1958 Heinkel-211 project?

Industria Aeronáutica Argentina worked in the 50s in a Jet airliner, Kurt Tank design, the IA-36, 'Cóndor', with simmilarities to 1958 Heinkel-211 project, turbines intake aspirating fuselage boundary ...
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0 votes
3 answers
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What rate of descent would kill you?

I was watching a video where a plane an MD-82 descended 18,000 feet per minute and crashed into a mountain. The plane was not upside down/on its side/spiraling- it had about a 5 degree pitch up the ...
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0 votes
1 answer
551 views

What is this jet aircraft appearing in the 2019 TV Series "Black Summer"?

This looks like an F-22 Raptor, but I can hardly see it:
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1 vote
2 answers
171 views

Was it ever considered to optimise a jet to normally operate with one engine shut off?

As I understand it, the current trend to reduce all commercial aircraft to no more than two turbofans has long-relevant reasons – the more engines, the higher the fuel consumption – and earlier jets ...
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4 votes
3 answers
649 views

How to Start a Jet Engine [duplicate]

I know how the basics of how jet engines work. I know that air goes into the compressor as the first step of the journey. However, where does the air come from that goes into the jet engine at such ...
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1 vote
2 answers
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Why are there so few high-wing jetliners? [duplicate]

So far, we have only seen a few civilian jet transports with high wings. All of them BAe 146, Do 328JET, seem to be regional jets. Yet military jet transports are almost completely high-wing. Why aren'...
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2 votes
1 answer
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Relationship between wing aspect ratio and speed [duplicate]

For some reason, I cannot find a relatively straightforward source online which discusses the relationship of wing aspect ratio and how it affects speeds of an aircraft. Specifically, is there a ...
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3 votes
2 answers
799 views

Why aren't quadjets required to remain controllable after a sudden, simultaneous failure of two engines on one side?

For all multiengine jets, it must be possible to maintain directional control of the aircraft in the event of a sudden failure of one engine in flight, with the other(s) firewalled, down to not far ...
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2 votes
1 answer
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How hot is supersonic intake air?

How hot is the air at the compressor inlet at supersonic speed? For instance the Concorde at mach 2.2 or other jet engines at even higher speeds.
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0 votes
0 answers
31 views

Typical burner/combustor dimensions of a jet engine

I know that sounds very generic but lets say for a common engine of a passenger airplane. What could be the typical dimensions for the burner part. I can't find anything online. Thanks.
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1 vote
1 answer
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Why would an F16 battery make a buzzing sound?

According to this YouTube Video I heard the mechanism that moved the canopy, and then I heard a small buzzing sound. The video description says that it is spooling something, but I don't know what ...
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0 votes
2 answers
267 views

Did the Soviet Union build any commercial jetliners?

I read about a Wikipedia article regarding the Soviet Union's Tupolev 114 which was comparable to the time's jetliners, and brought up the question: Did the Soviet Union build any jetliners for ...
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3 votes
1 answer
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What are the pros and cons of high service ceilings for fighter jets?

What are the pros and cons of high service ceilings for fighter jets? Can they bypass radars and attack effectively at high ceilings?
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7 votes
1 answer
539 views

Is there a minimum number of people needed for an aircraft pushback?

This seems a bit wasteful. Is there a legal requirement for a minimum number of people and if so, on what basis does this vary? (airline, airport, aircraft type, etc)
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52 votes
5 answers
19k views

Locked out of private jet - how do you get in?

Ok I'm not a jet owner, I'm a novel writer. I wanted to get my airplane facts right for the story. Say my character has a mid-size (can go overseas) private jet. Has a door lock on the outside door ...
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2 votes
2 answers
451 views

Why do jet nozzles close at different rates?

After recently seeing the trailer for Top Gun 2, I was reminded of something that I always wondered about: why do the nozzles of some jet aircraft seem to close at different rates? Sure, it's likely ...
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4 votes
4 answers
890 views

How to start up a Lockwood-Hiller Valveless Pulse Jet?

So me and my group mates in university got a lockwood hiller valveless pulsejet manufactured, and there was one error in manufacture. We are having trouble with trying to start the engine as ...
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2 votes
1 answer
259 views

Is there an equation for jet engine efficiency as a function of turbine inlet temperature?

I know that there is a relation between the turbine inlet temperature and the engine's efficiency. But, can anyone provide an equation or efficiency as a function of just the turbine inlet temperature?...
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2 votes
3 answers
221 views

Why are the first sounds of an approaching enroute airliner low frequency, booming ones?

Often I will hear an intermittent, low frequency, powerful, booming sound that resolves into that of an airliner flying enroute high (FL 300+) overhead. So the first sounds that an airliner flying ...
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7 votes
1 answer
9k views

Why is this missile positioned in this odd position? How can it be launched correctly?

How this missile is positioned here in this odd position? How this can be launched right from this jet?
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1 vote
0 answers
235 views

what is the physical explanation for additive drag?

from what i understand, additive drag is not really drag. it is a way to account for the variation of inlet condition due to conservation of mass. but i still don't get why it create drag(negative ...
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4 votes
2 answers
141 views

How can the effects of hot corrosion and salt deposits from sea water spray in gas turbine engines be negated/prevented?

In aircraft operating in a maritime environment, corrosive effects from salt water are common. Are there any specific coatings used in engines for such aircraft? If so, which are they? How frequently ...
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5 votes
1 answer
998 views

What do those writings mean that are on the landing gear doors?

I've been watching carrier videos a lot these days and I notice these writings. What do these writings means? I didn't upload all of them, most of the time there are location names and sometimes ...
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21 votes
4 answers
5k views

What kind of jet plane is this?

The cockpit can hold one person, is smaller than a compact car and as narrow as a motorcycle. What kind of plane is this and how hard would it be to fly?
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1 vote
1 answer
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Is it possible to obtain an STC for single-pilot ops in a jet certified for two pilots?

I have been doing research on whether or not one could realistically obtain an STC for a super-midsize jet certified for two pilots and legally fly it single-pilot. For reference, my chosen aircraft ...
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0 votes
1 answer
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Does the canard config have radically different controls than classic config?

Classic configuration is something like the A320: wings in the middle, horizontal stabilizers at the tail. Canard configuration is something like the Beechcraft Starship: wings at the back and ...
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2 votes
3 answers
255 views

Could wing tilting be a mechanism for VTOL and high angle of attack for jetliners? [closed]

My question is about turbofan airliners, could an airplane tilt its wings 90 degrees so that the fuselage horizontal axis is perpendicular to the longitudinal axis of the turbo fan. This way an ...
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4 votes
0 answers
80 views

Does/Can combustion instabilities occur in SCRAM jet?

I was told that combustion occurs at Supersonic speeds in SCRAM jet. So acoustic disturbances/ pressure fluctuations can't travel into incoming jet stream. Does this avoids combustion instabilities in ...
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2 votes
2 answers
5k views

How much does it cost to lease a jetliner?

As the title says, how much would it cost to lease a airplane for an airline. Let's say a B737 and a B747 or similar aircraft. I tried to contact several aircraft leasing companies but so far I've ...
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1 vote
3 answers
322 views

What is the lightest jetliner out there?

What is the lightest commercial jetliner out there? I was thinking of something like a Embraer E170.
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1 vote
1 answer
464 views

Can the maximum thrust of a turbofan engine be estimated by its intake diameter?

I have no clue in aeronautics. How to estimate maximum thrust (at any rated condition, such as altitude, speed, rotation velocity- any given condition) by intake diameter?
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3 votes
1 answer
239 views

Are there reference speeds like V1, Vr or V2 for a touch and go procedure?

Are there any reference speeds like V1, Vr and V2 on a touch and go procedure? During takeoff, these are used to mark certain states of the takeoff, including the speed at which the aircraft starts ...
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6 votes
4 answers
1k views

What are the advantages/disadvantages of in-fuselage engines (eg most fighter jets) vs wing/fuselage mounted engines?

Most modern jet fighter designs incorporate their engine(s) within the fuselage, while most other medium/large aircraft mount them either under the wings or on the rear fuselage. What are the ...
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1 vote
1 answer
3k views

What is this yellow tube blowing air? [duplicate]

What is this yellow tube (lower right quadrant of the picture) which is blowing air into the airplane while it's at the terminal? You can see the open hatch on the bottom of the jet through which it's ...
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1 vote
1 answer
169 views

Who made the first high-wing jet airliner?

I thought the only high-wing jet airliners were made by the Soviets but the British Aerospace RJ-100 and Dash 6 series twizzled my mind. So who made the first high-wing jet airliner?
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4 votes
3 answers
4k views

Are modern fighter jets bulletproof and armored?

Are modern fighter jets bulletproof and armored? One would not be wrong given part of their operations is being on the receiving end of enemy ammunition shooting at them.
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