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0
votes
2answers
27 views

Do small or regional airports have maintenance staff or companies onsite?

Do small airports or regional airports with just a couple of flights per day, maybe even from different airlines all have on-site aircraft maintenance staff? It hardly seems economical to have ...
1
vote
2answers
44 views

If sweep delays compressibility, why does 747 cruise slower than A380?

B747 has a sweep angle of 37 deg and A380 has a sweep angle of 33 deg. If the main reason for sweep is to delay compressibility effects and increase operating Mach number, why does B747 cruise at a ...
0
votes
1answer
32 views

What are the proper callouts on comms when in local airspace without an ATC? (community or privately owned runway)

I know that there are many non-commercial runways that do not have an active ATC on-duty, and that many small aircraft use these runways for takeoff and landing, but I never actually learned what the ...
0
votes
0answers
29 views

Is it possible to continue flying without electric power? [duplicate]

To be specific with the question, I would like to know if if it is possible to continue flying in the event of total loss of electrical power. Obviously, I know this entails the shutting down of ...
1
vote
1answer
49 views

Weapon vs normal aircraft track

I've read that some radars can detect stealth aircraft or aircraft with low radar cross section but are not powerful enough to allow a "weapons" track or allow a missile or another aircraft ...
0
votes
0answers
39 views

Is becoming pilot worth and please answer some of my other queries [closed]

I few queries, please answer: - 1) if the cost to become pilot is so much high around INR 50 Lakh then, how much is the salary? (Is salary on basis per flight or per month) and How much? 2) Can I do ...
1
vote
1answer
89 views

Why do X-wing configurations missile/guide bombs use symmetric airfoils?

From all the missiles/guide bombs I have come across, I've always observed that a symmetric airfoil is used for both the wing and tail. Why not have a cambered airfoil for the wing and a symmetric ...
3
votes
1answer
95 views

What is the rationale behind placing arrestor gear on a long runway?

I'm looking at the obstacle chart and the aerodrome chart (pdf; source: Hellenic Civil Aviation Authority) for LGLM (Lemnos, Greece), which serves both military and passenger aircraft. The runway ...
0
votes
1answer
20 views

How do I calculate the centre of gravity on the lateral (transverse) y-axis?

I have a real issue with determining the centre of gravity for the y axis of an aircraft, especially with selecting the reference/datum point and how to measure the displacement. Please I would really ...
0
votes
2answers
32 views

Does a hold-entry count as a hold for instrument currency?

So in looking at the instrument currency requirements for the FAA (6 approaches, holds, intercepting & tracking courses), I'm having difficulty nailing down what constitutes a hold. Based on AIM 5-...
0
votes
1answer
40 views

How to decide the diameter of a propeller and number of propellers needed in a UAV I am designing? [closed]

I want to design a turboprop aircraft. I know all the design parameters such as lift, thrust, weight etc at a given flight stage. I want to know what the size of the propeller should be.
15
votes
1answer
2k views

What are the spikes on Ingenuity's blades?

I am puzzled by the spikes on Ingenuity's blades (marked by a red box in the image below). What is their function ? Are these special to Ingenuity? Why don't they collide during high RPM? Don't they ...
0
votes
1answer
41 views

Aircraft thrust calculation

I had a question regarding thrust calculation for an aircraft during cruise. For an aircraft flying at a constant cruise altitude and a constant Mach number (level unaccelerated flight), what exactly ...
3
votes
1answer
82 views

What happens to Vyse and Vxse above the OEI ceiling?

An EASA ATPL question/answer insists, counterintuitively, that a twin which loses an engine and must drift down will find its least rate of sink at Vxse. I've been trying to understand this, but haven'...
1
vote
1answer
54 views

How are foam cores shaped for tapered and swept back wings?

How are foam cores shaped for tapered and swept back wings? I understand that many constant chord, constant thickness rectangular wings use the same sized airfoil shape from root to tip. Let's assume ...
8
votes
3answers
1k views

Can flaps be used to perform rotation and flare?

TL; DR using flaps to directly control sink/climb rate near ground = simpler and faster response = easy to fly airplane? Rotating is the pitch up during takeoff that causes the aircraft to leave the ...
3
votes
2answers
114 views

Where do countries under international sanctions find spare parts?

Some countries are being touched by American or European sanctions. Such sanctions affects the possibility to import spare parts for American-made or European-made aircrafts (e.g. Iranian F14 and ...
3
votes
0answers
68 views

Why does the flare mode of the A321neo engage 50 feet higher than the A321ceo?

When passing 100 ft RA, the THS is frozen and the normal flight mode changes to flare mode as the aircraft descends to land. The flare mode is essentially a direct stick-to-elevator law without auto ...
2
votes
1answer
177 views

Why not more Max 8 accidents?

Why did "only" two Max 8 accidents occur? Before the grounding, there must have been at least dozens but surely 100s if not 1000s of flights with this model. How come the vast majority of ...
1
vote
0answers
77 views

How Jozza Bombsight worked?

I'm looking some information about the so called Jozza Bombsight used for example on board of the Savoia-Marchetti SM-79 during WWII. Thank you
2
votes
2answers
118 views

What RA will be generated if intruder traffic is at our level in TCAS II?

If the other traffic is at the same level, and neither climbing or descending. Will the RA say "CLIMB" or will it say "DESCEND"? How will it be decided and what are the ...
-3
votes
1answer
86 views

Can I Restrict Commercial air Traffic above My Land for ordinary use and enjoyment? [duplicate]

I have 7.72 acres in the Southern California Desert. It's outside of Palm Springs Ca. My land was granted to My Grandfather in 1961 as a homestead. The patent states that I have ALL Rights, Privileges,...
6
votes
1answer
166 views

What is prop RPM control logic on PC-12?

Pilatus PC-12 has a constant speed propeller, but it does not have a prop control lever in cockpit, just a power lever and small fuel on/off lever. So how does it determine the prop RPM? Does it ...
0
votes
1answer
103 views

Are complete design reports of military aircraft ever published? [closed]

For old aircraft like WW2-era fighters, are such reports ever formally declassified for academic use? Where can I find them?
0
votes
2answers
122 views

In which part of the flight does a plane reach maximum lift?

In which part of the flight does a plane reach maximum lift? My logic: I think a plane reach maximum lift in a horizontal flight, when a plane start rolling on a runway, landing gear produce more ...
-2
votes
2answers
103 views

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

I'm using a lighter materials to rebuild plane, to cut down plane weight to 56kg and a 1.2m 3blades propeller.
0
votes
1answer
43 views

Does the Autopilot switch to ALT ACQ mode at a fixed altitude difference from target altitude?

For example, if climbing (or descending for that matter) at 3500 fpm, will the AP switch to ALT ACQ mode at the same point it will as when climbing or descending with 1000 fpm? Or does the point of ...
0
votes
1answer
131 views

Why we need 1 hour for cooling after 3 consecutive attempts for starting the APU?

As it's said here(APS-3200 training manual (pg 268)): we need 1 hour for cooling after 3 consecutive attempts for starting the APU. But why? why not after each attempt? and why 1 hour? is it valid ...
1
vote
1answer
72 views

What's the starting envelope of APU?

I was reading the APS-3200 training manual (pg 268) and faced this part: What's the starting envelope of APU? What does mean "Normal start throughout the operating envelope: minus 300 m to 11900 ...
-3
votes
0answers
60 views

How to calculate rotor dimensions and other specifications for a flying armored train [closed]

Some friends and I are creating blueprints for a theoretical helitrain tank(not sure what else to call it). It’s meant to be a train-tank-helicopter hybrid. Effectively a chain of flying tanks with ...
3
votes
1answer
118 views

What purpose does Wing Root Seal serves?

What is the use of Wing root seals? What kind of leaks are possible without having wing root seal and if the seal is broken what kind of issue can airplane faces?
-1
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0answers
36 views

Analysis of the landing distance by Landing Runway Length at sea level - dry or wet curve? [closed]

For the analysis of the landing distance using Landing Runway Length B787-800 at sea level it is more appropriate to use the wet runway curve without adjustment or the dry runway curve adjusted by 15%?...
0
votes
0answers
38 views

Minimum length required for the runway landing and takeoff of ATR 72-600?

What is the minimun length required for the runway landing and takeoff of ATR 72-600? obs: altitude of 1000ft at 30 degrees
1
vote
2answers
172 views

In Spain, can I land and take off from my own property?

I have a property in Spain with a big field; is it legal to take off from and land on your own property in a light aircraft?
9
votes
3answers
1k views

Can gusts be reported as lower than wind speed?

KADS 072350Z 31030G20KT 13SM SKC 24/02 A2980 I’ve never seen a negative gust factor before. Is that a real thing (and if so, what does it mean), or did someone just make a typo?
0
votes
0answers
148 views

Where can I find an image of the A380's avionics bay? [closed]

I've been looking for an image or model of an A380's avionics bay for a scene in a novel I'm writing. I'd like to showcase the advanced tech that the plane uses and have reference material if it gets ...
2
votes
4answers
2k views

What component of an aircraft generates its electric power?

What component of an aircraft generates the electric power to start the aircraft's engine? For a Rotax 912 engine, I think the magneto generates the electricity, but I'm not sure; I also think about ...
17
votes
1answer
3k views

What is this plane from WWII (probably French or Allied forces)?

Picture should have been taken after or during the end of World War II, probably close to Marrakech French base (but that is not sure). Can anyone tell us what these planes are? My grand father could ...
0
votes
0answers
36 views

Books/materials for learning about technica details/procedures? [closed]

Around timestamp 1:21-1:25, some "books/documents and movies" are mentioned. Could anyone please suggest such books, documents and movies? Thanks in advance.
-2
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0answers
81 views

Airbus A320 Family Aerodynamics [closed]

I need a good overall PDF or link that will give me overall information about the aerodynamic characteristics of the A320 Family (Airfoils, stability, etc.)
2
votes
1answer
274 views

Does F-35 flight stick have a trackball?

There is a trackball-looking thing on the side of F-35's side stick. What is this? Is this actually a trackball? There is also another round looking "button", although a bit different from ...
0
votes
0answers
82 views

Does the Cessna 208B still require a part 23 waiver to operate with 14 seats?

The selected answer to this question refers to the applicability of part 23 to aircraft of nine passengers or less. Other countries certified the 208B with as many as fourteen passenger seats, using a ...
-3
votes
2answers
147 views

Would a hybrid jet turbine that rotates extremely fast be practical? [closed]

In this hypothetical scenario, a new jet engine prototype is being tested in 7th generation fighter aircrafts, the hybrid engine itself is quite normal, but they added high temperature superconductors ...
8
votes
3answers
1k views

What effect does a direct crosswind have on takeoff performance?

Is the take-off distance increased by a direct crosswind?
-1
votes
0answers
90 views

Is the Phoenix's airport a non-standard one or Bombardier CRJ? [closed]

Today, I was reading this news: It’s so hot in Phoenix that airplanes can’t fly And then this article: Why Phoenix's Airplanes Can't Take Off in Extreme Heat In this article; we see this line: ...
7
votes
4answers
827 views

How are range and frequency related in HF communications? [closed]

How does the range of HF communications differ with frequency used? Is it less frequency more range, or more frequency less range?
0
votes
1answer
66 views

How do I set up G1000 GFC700 autopilot for takeoff?

I want to be able to engage autopilot right away at a safe altitude, while taking advantage of flight level control at Vy for the climb. Heading is set for the runway. I’d switch to NAV mode when I ...
2
votes
1answer
204 views

What Airfix model is this?

I built this Airfix kit when I was younger, and don't know what it is. I'd love to know!
2
votes
1answer
108 views

How do electric propeller governors (or electrically controlled governors) work and what are their pros and cons?

I am trying to understand why electric propeller governors are not (yet) prevalent given that they offer the ability to control the RPM with high accuracy. What is the typical architecture for an ...
2
votes
1answer
207 views

Why can Boeing V-22 Osprey carry more cargo internally than externally?

According to the Wikipedia, V-22 Osprey can lift 20,000lb of internal cargo, whereas it is able to carry only 15,000lb externally by dual hook. I wonder why there is a difference between external and ...

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