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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Why was the Me 262's top speed at 6km?
The P-80 had its top speed at sea level, but the Me 262 achieved its top speed at 6km altitude. What were the reasons for this? Was it that the engine was designed for such an altitude to deal with ...
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Will the new USAF trainer Boeing–Saab T-7 Red Hawk have weapons?
Will the new USAF jet trainer, the Boeing–Saab T-7 Red Hawk, have weapons?
I see the mention of the possibility of hardpoints e.g. here:
https://www.thedrive.com/the-war-zone/42760/air-force-wants-...
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How does momentum thrust mechanically act on combustion chambers and nozzles in a jet propulsion?
I'm asking this question since I can't intuitively understand how the acceleration of mass flow and therefore the increase of its momentum can actually mechanically act on the combustion chamber ...
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What does this hand gesture of fighter jet pilots mean?
I am trying to understand more of the gestures fighter jet pilot use. I have seen this gesture many times:
Does anyone know what this gesture mean? Are there any good resources about the gestures ...
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Why do the arresting gear cables need to be pushed/ guided back?
Also, what is the yellow metal stick officially called?
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Slanted Brown Rectangles on Aircraft Carriers?
What are the rectangles adjacent to the arresting gear on Aircraft Carriers? Are they service hatches?
https://www.kastalon.com/wp-content/uploads/2017/10/ford-emals-3.jpg
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Which fighter jet is this, based on the silhouette?
6 to 8 of these planes flew through the Ogwen Valley in North Wales, UK, this morning (2nd of June). Hawks and other training jets are common sights, but I’ve not seen these before and can’t identify ...
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Nutritional value of jet fuel (from a microbe's point of view) and which of their byproducts is causing the fuel tank corrosion?
Self-described "pilot, aerospace engineer, and mad scientist" YouTuber Jack Schneider's video Growing Microbes in Jet Fuel explains that if a layer of water accumulates below jet fuel (due ...
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Why do we consider that air comes into jet engine?
While calculating air pressure and temperature during cruise of jet engines, we consider that air comes into the jet engine inlet with our flight velocity.
But why? In fact, air stops stagnant in ...
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What were the main differences between Whittle's British turbojet and Von Ohain's German one?
I cannot fully understand in simple words the differences between the axial flow engine (Von Ohain) and Whittle's centrifugal turbojet.
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What increases the rotational velocity of air in an axial flow compressor?
In an axial flow compressor as used in modern jet engines, the goal of a compressor rotor is to increase the angular momentum of the air by imparting an increase in swirl velocity. (Note: the goal of ...
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Why are most of KBOS's instrument departures and arrivals jet-only?
I was looking through the big book o' KBOS instrument procedures when I noticed that almost all of the airport's SIDs and STARs are marked "NOTE: For turbojets only" or some variation ...
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Buzz-saw noise from big turbofans at high thrust
This topic has been addressed many times on this and other forums. I have seen (and often not fully understood) some deep technical analyses, incuding manufacturers' research labs, since this is a ...
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What long-range jet is easiest to fly?
Of jet aircraft with sufficient range to cross the Atlantic on a full tank of fuel, which is easiest to fly?
More specifically:
The required range is from New York's JFK Airport, to Shannon Airport, ...
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What does "throttle is staggered" mean? [closed]
What does "throttle is staggered" mean? and how is it related to adjustment of MEC(Main Engine Control) in B737-300(CFM56-3C)?and which are safety issues regarding that?
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Why do air planes not have a "grating" in the front of the jet engines for safety? [duplicate]
This is what a typical jet engine looks like:
Considering the horrible dangers with birds getting in there and crashing planes, why doesn't it look like this?
Why don't they have a "grating&...
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Is it possible to fly around the world to stay in daylight with a fighter jet?
I was wondering if it is possible for a fighter jet to fly around the world and stay in daylight? For the Southern and Northern Hemisphere, the time and speed of daylight is different during seasons. ...
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Can electricity be harvested from magnets in jet engines?
I was reading about bleedless-787 power system but found out it still requires a gearbox.
What if you put coils around the "tube" part of the jet and tiny magnets in the end of the fan/...
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Understanding fuel tanks/pumps of Fighter jet
I have observed fighter jets performing maneuvers like inverting, Turing around in sharp angles etc. This may subject plane to G forces and other dynamic forces. How does fuel tank ensure steady ...
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How does the F-16 engine startup work?
So, the simplest way to start up an F-16s engine is to flip the power switch to "main power" and then set the "jet fuel" switch to "Start 1" or "Start 2".
I ...
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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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