Questions tagged [airplane]

A heavier-than-air fixed-wing aircraft propelled by one or more engines.

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0 votes
1 answer
76 views

How can I determine how long it would take to fly between two points?

How can I determine the approximate time required to fly a particular plane (e.g. a Cessna 172) between two points, considering the possibility of needing intermediate stops? For airline flights, I ...
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10 votes
3 answers
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Do pilots need a different license for each type of aircraft?

I have heard before that even an experienced Boeing 747 pilot can't operate a Boing 787 Dreamliner without attaining the specific license first.
5 votes
5 answers
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Can you put a propeller on the back of a plane, and have it go forward?

So, I was thinking about how drones work, and I can't figure out how drones with propellers at the rear of the drone can still go forward. I'm not that experienced in aviation so if this is a basic ...
1 vote
1 answer
109 views

Rotor-wing aircraft feasibility

Could an aircraft have a spinning wing as a helicopter rotor at low speeds which stops spinning at high speeds to act like an airplane wing? The tail-rotor would turn 90 degrees and become a pusher ...
16 votes
2 answers
5k views

Other than the rest areas for the crew - what else is in the 'attic' of an aeroplane?

So I am seeing some information about crew rest areas in an aeroplane which typically just sit above the passenger cabin. In the image of the a350 XWB for example you can see those areas in the front ...
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2 votes
2 answers
157 views

While descending some pilots put local pressure long before reaching transition level?

Isn't this risky? I thought once they pass transition level they should change to local pressure... But is this not risky to put local pressure qnh before... risky in terms of separation wheter ...
3 votes
1 answer
235 views

Airplanes Parking On Taxiway

I've noticed one or two planes at my airport continuously park on the Taxiway and stay for sometimes an hour+. I keep looking and can't seem to find any regulations on this topic. (Only finding stuff ...
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-2 votes
2 answers
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How does control system design ensure correct elevator position with the steering system unlocked? [closed]

I’m having some trouble answering the following problem encountered in one of the worksheets for aviation students: The plane shown in the picture stands on the runway. The pilot, while getting off, ...
3 votes
2 answers
2k views

What happened to this plane during landing? Failed first time? [closed]

Hi I was checking flights at Heathrow on flightradar24.com the other day and found this plane a bit strange. It looked like the first landing wasn't successful. The plane may have touched down but ...
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2 votes
1 answer
153 views

How does aircraft leasing work?

I've noticed on websites where you can buy and sell aircraft, such as controller.com and trade-a-plane.com, there are often aircraft that are available for lease. For example, there is a 1997 Bonanza ...
4 votes
1 answer
351 views

Does 'Fat Albert' Have any significant modifications?

The Blue Angels use a C-130 known as 'Fat Albert' in some of their shows. Other than the paint job and smoke, are there any significant differences between 'Fat Albert' and a standard C-130?
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2 answers
278 views

For a PPL, do I pursue gliders or airplanes first? [closed]

I'm interested in pursuing a Private Pilot's License. I'm interested in both gliders and powered flight. Gliders look like fantastic fun and powered flight would be an amazing thing to have – I could ...
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2 votes
1 answer
228 views

Are the gyroscopic precession and P-factor of a pusher propeller in opposite directions?

according to this picture the P factor cuases airplane to yaw to the right but if pilot wants to pitch up , then p factor and gyroscopic precession acts on airplane at the same time but in opposite ...
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1 vote
2 answers
154 views

What are the relations between Angle of attack and Calibrated Airspeed?

I would like to estimate Angle of Attack using trigonometric relations i.e AoA = arctan (w/u) airspeed components (i.e u, v, w). When I am considering body 'x' velocity ('u' component), is it ...
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2 votes
1 answer
212 views

Is this a normal flight path to take?

A few days ago I was flying from Munich to Chicago, the flight arrived about 20-25 minutes late, at some point, the pilot suddenly turned in completely the opposite direction as we were approaching ...
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4 votes
1 answer
189 views

Matching the Drag Equation to Real Airplane Data

I am trying to compute airplane performance for a piston-driven airplane with constant speed prop using the standard equations for Lift, Thrust and Drag. I have found that there are a couple of useful ...
13 votes
4 answers
2k views

What are the benefits of mounting an engine above the fuselage?

I'm wondering what advantage/disadvantage, if any, does mounting an engine above the fuselage give? This question comes up after seeing the Macchi M.33 below: The engine mounted in such a way does ...
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1 vote
1 answer
846 views

Is it legal to build your own plane and fly it?

Is it legal to build and fly your own airplane? This essentially leads to two central questions: Will the FAA even let you build and fly your own airplane?, and Will there need to be inspections and ...
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-1 votes
3 answers
223 views

What should a pilot do if none of the control surfaces are responding? [closed]

What would a pilot do if none of the control surfaces are responding? For example, a pilot flies a medium-sized plane and to make the situation a bit less hectic, they're the only one onboard. Then ...
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-1 votes
1 answer
93 views

Can we get 0:40 thrust to weight ratio from three small engines

Because I have an engine of 13 hp four stroke 1 cylinder that pulls about 0:20 T/W ratio. and is it possible to multiply the thrust by two? Using two more small engines which is 6.5 hp each on the ...
-2 votes
2 answers
162 views

Will my CRI CRI twin engine plane fly if I replace the engine with a single 15hp gasoline engine? [closed]

I'm using a lighter materials to rebuild plane, to cut down plane weight to 56kg and a 1.2m 3blades propeller.
0 votes
0 answers
64 views

What are typical control surface deflection "rate" limits for transport airplanes?

I was wondering if anyone knows what are some typical control surface/actuator deflection "rate" limits for transport airplanes (i.e. aileron/elevator/rudder deflection rates)? I haven't ...
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4 votes
1 answer
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Is Rutan's method of foam core construction obsolete?

Is Rutan's method of foam core construction obsolete, or is it used on other fibreglass designs as well?
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7 votes
2 answers
569 views

Unusual airplane shown in Google Earth

At first I thought it was a plane that had its wings removed for some reason. Then I thought it might be a lifting body, but I don't think so. Any ideas? This was in Jacksonville, FL; I can provide ...
13 votes
1 answer
2k views

Can someone identify the Make and Model of airplane that this fuselage belonged to?

This gutted fuselage remnant was photographed by my mother at Whaler's Bay on Deception Island in Antarctica in 1994. Deception Island is directly south of the Falkland Islands in the narrow area ...
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8 votes
2 answers
585 views

Can anyone identify this old airplane?

Can anyone identify this old airplane, and/or what era it's likely to be from? The photo is from northern Italy, and it's the only photo I have. I'd be very grateful for the help!
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16 votes
2 answers
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Can anyone Identify this FLY FAIR seaplane?

This photograph, from my family's collection, of a high-winged, dual rotary engine, amphibious airplane, probably in the 1930's, appears to be an excursion plane at a fair since it has "FLY FAIR&...
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1 vote
1 answer
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Why do we lean the mixture in a turbocharged airplane (C182T)?

An increase in Altitude will result in a decrease of atmospheric pressure -1 in. Hg. / 1000ft (ISA conditions), but with a turbocharged airplane it will keep the pressure constant (+/- MSL pressure) ...
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1 vote
0 answers
256 views

What happens if you put too much oil into a reciprocating engine wet sump?

Apparently putting too much oil into your airplane engine is really bad and can be expensive but why? Will the excess oil go out via the oil breather,... ? Thank you
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6 votes
2 answers
2k views

Is there a modern day "replacement" for the de Havilland Beaver?

Is there a modern day equivalent or replacement for the Beaver's Payload, STOL and floats capabilities? By replacement, I mean that it can fly into the same airstrips under the same weather with the ...
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1 answer
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Can I fly this six motor drone? [closed]

My body weight; 70kg, Drone weight; 50kg, Props length 0.7m, 6 motors (2hp each), Total weight 120kg, Total horsepower 12, Each motor runs 3000rpm, Please can I fly it. Thanks!!! drawing of the drone
0 votes
3 answers
862 views

What is the reason Light Sport Aircraft (LSA) minimum speed is limited? [closed]

I saw an explanation about Icon A5 Light Sport Airplane (LSA), it is said that according to FAA regulation, its stall speed NOT LESS than 45 miles per hour (mph) or around 39.1 knots or around 72 km ...
1 vote
1 answer
75 views

Can an airfoil have multiple aerodynamic centers?

Aerodynamic center is a point where the moment is independent of angle of attack. Can we have 2 or more such points? Does it necessarily lie inside the airfoil?
3 votes
4 answers
637 views

Will it be more efficient if airplanes flap like birds? [duplicate]

Many airplanes have parts that are designed to mimic some features of animals. I have also read that birds are incredibly more efficient than most of the airplanes we see today. I wonder, will the ...
8 votes
1 answer
2k views

How does an airliner adjust and move exactly over the coloured lines before stopping in front of the jetways?

How does an airliner adjust and move exactly over the coloured lines before stopping in front of the jetways?
-2 votes
1 answer
91 views

what is the actual force causes this issue according to IAS that shows normal descend speed?

When we have tail wind during approach , with respect of Aerodynamic forces that effect on airplane , the whole part of fuselage move forward due to tailwind, also we have about 70kts IAS (in general ...
3 votes
1 answer
289 views

What would happen if a hot air ballooon was punctured in mid-air?

I am writing a script for a film where a hot air balloon is punctured and it falls to the ground. There are two teenagers in the balloon when it is in the air. What I would like to know is how fast ...
3 votes
2 answers
424 views

Aircraft fuselages being shipped on a boat

Earlier this morning, my wife and I were down by the docks in Southampton (UK), watching cruise-liners move about with our binoculars. Whilst panning around, we noticed two old aircraft bodies (/...
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1 answer
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What does induced flow exactly means on helicopters flight? How is it different from downward deflection of air?

I believe all airfoils deflect air downwards at an angle at a velocity V. What is the difference between the downward-vertical component of the deflected wind and the induced velocity in Helicopter ...
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1 vote
1 answer
65 views

What are some first-order drag approximations for airframe/propwash interactions?

What are some first-order drag approximations for airframe/propwash interactions, both for dynamic flight and for static thrust, in a traditional tractor configuration?
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0 votes
2 answers
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How to compute thrust to weight ratio of a Cessna 172?

Cessna 172 has weight about 1 ton and it's engine produces about 213 Kg of thrust, and it flies great. So if I make a plane with a weight of 100kg including pilot and fuel so will 15 kg thrust good ...
-1 votes
1 answer
80 views

Best books for learning about history of airplanes? [closed]

I've always liked airplanes, but for some reason have never retained much information about specific planes. For instance, if someone casually mentions the X-15 or the X-24, I have to look up what ...
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2 votes
0 answers
163 views

How do you spot the difference between an A320 and a B737? [duplicate]

I'm constantly having problems with identifying aircraft, and was wondering whether there are any tricks with easily identifying whether an aircraft was a Boeing 737 or Airbus A320?
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0 votes
4 answers
761 views

how does the rudder work? [closed]

What do you know about yaw control and more precisely about the result caused by the rudder (R on picture)? Below the right pedal of the airplane has been depressed, and the rudder creates a rotation ...
0 votes
3 answers
173 views

Why do the ratio of proppeler plane over jet engine seems to have change in Bucarest airport during the covid19 crisis?

I live in a village very close to an (intl) airport: Bucharest "Henri Coanda" International Airport. Now, due to lock-down caused by covid pandemic, I noticed - at least today when I spent most of the ...
4 votes
2 answers
870 views

Why do autogyros exist? [duplicate]

This question has been intriguing me for some time. In Autogyro the rotary blades merely acts as what fixed wings act in normal aircrafts to generate lift. So why not simply have a fixed wing instead ...
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2 answers
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How to increase payload capacity of plane?

Keeping thrust, wing span, weight (of plane) constant, can we increase the payload capacity (nearly 50% more)? Adding payload to plane, it decreases thrust/weight ratio, how does it affect the control ...
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0 votes
5 answers
399 views

Can lift be increased by increasing the angle of incidence of the wing? [closed]

Can the lift of a plane be increased by increasing the Angle of Incidence (angle between the chord line of the main wing and the axis of the fuselage)? Meaning, can more lift be generated while the ...
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0 votes
1 answer
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Helicopter or Airplane, which is the most difficult to fly? [duplicate]

I know it varies from aircraft to aircraft, but I want to know in general, which would be the most difficult aircraft to fly even after years of experience. Helicopter or Airplane ? I tried to fly a ...
4 votes
5 answers
477 views

Can you fly 2000 miles on an engine that costs less than $500k? If so, what type of engine?

Ok so Im exploring ways to bring cargo and medical supplies to various rural cities in say Africa without relying on ground infrastructure. Just short and cheap runways spread around the continent. It ...