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Search: Posts Made By: chornedsnorkack
Showing results 1 to 35 of 827
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Forum: Tech Log
13th Sep 2017, 15:16
Replies: 28
Views: 6,405
Posted By chornedsnorkack

Adds, but not equally. Take a cylindrical...

Adds, but not equally.
Take a cylindrical vessel of water. Drop a stone in it.
Water level will rise due to the volume displaced by stone.
The pressure of the stone on the tiny contact points to...
Forum: Tech Log
12th Sep 2017, 17:14
Replies: 28
Views: 6,405
Posted By chornedsnorkack

Not exactly. Consider a water bottle with broad...

Not exactly.
Consider a water bottle with broad bottom and tall neck, which is full of water.
The water pressure on the bottom is high, and over the wide bottom sums out to a large force. Yet the...
Forum: Spectators Balcony (Spotters Corner)
16th Jun 2016, 15:24
Replies: 1
Views: 1,713
Posted By chornedsnorkack

EASA certification of CS100

Seems to be certified by EASA as well as FAA.
The EASA type certificate data sheet:
https://www.easa.europa.eu/system/files/dfu/EASA%20TC%20IM%20A%20%20570%20-TCDS-CS100.pdf
Forum: Biz Jets, Ag Flying, GA etc.
1st Jan 2011, 11:06
Replies: 12
Views: 2,648
Posted By chornedsnorkack

What substantial restrictions does Part II give...

What substantial restrictions does Part II give for big planes, compared to small planes?
Forum: Tech Log
22nd Jul 2009, 19:48
Replies: 26
Views: 3,338
Posted By chornedsnorkack

OK, letīs list the known widebody human uses of...

OK, letīs list the known widebody human uses of cargo hold.

Classical DC-10-10 and Tristar 1 had standard lower hold galleys. Upper galleys and cargo holds through whole underbelly were options...
Forum: Tech Log
11th Feb 2009, 16:18
Replies: 9
Views: 1,423
Posted By chornedsnorkack

Ditto with 777-300ER. Most airliners cannot carry...

Ditto with 777-300ER. Most airliners cannot carry full fuel and full payload, because they exceed MTOW in that case.



That - or accept longer takeoff runs. But since the original plane already...
Forum: Spectators Balcony (Spotters Corner)
4th Feb 2009, 21:56
Replies: 38
Views: 4,345
Posted By chornedsnorkack

A380-800r

A380 has been designed with a view to a stretch. The huge wing reference area. Compare A340-600HGW with A380-800! The wing area of A380 is almost twice that of A340-600. A340-600HGW MTOW is 380 t; at...
Forum: Tech Log
15th Jan 2009, 15:07
Replies: 24
Views: 19,258
Posted By chornedsnorkack

Look at it this way: the drag is at its minimum...

Look at it this way: the drag is at its minimum when both main wing and horizontal stabilizer have exact same AoA which is the best L/D AoA for both. But this has neutral stability: if you pitch up...
Forum: Aviation History and Nostalgia
14th Jan 2009, 14:55
Replies: 18
Views: 12,903
Posted By chornedsnorkack

Cross-section

What is the cross-section of BAC 3-11 like? There were fuselage frames, there were cabin mockups - how big is it compared to A300?
Forum: Computer/Internet Issues & Troubleshooting
10th Jan 2009, 16:48
Replies: 0
Views: 131
Posted By chornedsnorkack

Should guests see all threads?

Should guests see all threads in the open fora? Because there is a thread I cannot see when not logged in as a guest, but which shows up fine among all the others when logged in!
Forum: Spectators Balcony (Spotters Corner)
10th Jan 2009, 10:41
Replies: 0
Views: 175
Posted By chornedsnorkack

747-200 and A380-800 capacity

How much usable floor area does a Boeing 747-200 (VC-25/E-4B) have? And how does A380-800 compare against this?

Roughly how are the usable spaces of VC-25 and E-4B divided? I mean, the basic...
Forum: Spectators Balcony (Spotters Corner)
4th Jan 2009, 07:38
Replies: 4
Views: 583
Posted By chornedsnorkack

What then is the relevant part, weight or the...

What then is the relevant part, weight or the fact of getting paid for flying? I. e. if a pilot owns and flies for free a secondhand Cessna Citation II (6,8 tons) and also does some paid taxiing or...
Forum: Spectators Balcony (Spotters Corner)
1st Jan 2009, 11:19
Replies: 3
Views: 1,217
Posted By chornedsnorkack

Width of Tristar, A350 and other widebodies

Tristar outside fuselage width is well known. 597 cm. DC-10 is 5 cm wider, at 602 cm.

However, the Tristar walls are thinner at sides. The frames are thinner, skin is thicker and there are no...
Forum: Spectators Balcony (Spotters Corner)
25th Dec 2008, 11:15
Replies: 1
Views: 430
Posted By chornedsnorkack

Flown!

See PICTURE: Sukhoi flies second Superjet for first time (http://www.flightglobal.com/articles/2008/12/24/320520/picture-sukhoi-flies-second-superjet-for-first-time.html)
Forum: Aviation History and Nostalgia
25th Dec 2008, 11:01
Replies: 0
Views: 286
Posted By chornedsnorkack

Deregulation

US airlines were Deregulated in 1978.

What about other countries?

I expect that Air Koryo has not been deregulated to this day. Which other countries have airlines that are not deregulated...
Forum: Tech Log
24th Dec 2008, 14:32
Replies: 82
Views: 39,362
Posted By chornedsnorkack

Precisely. And if you have a thin flat plate in...

Precisely. And if you have a thin flat plate in the absence of viscosity, it can only exert forces at right angles to its surfaces.



Why not? If you have a thin flat plate at an angle to the...
Forum: Tech Log
24th Dec 2008, 11:04
Replies: 82
Views: 39,362
Posted By chornedsnorkack

This is easily doable. Climb to a height where...

This is easily doable. Climb to a height where air density is 1000 times less (about 60 km).

Lift should decrease 1000 times, except that Reynolds number also decreases 1000 times.

You could...
Forum: Tech Log
23rd Dec 2008, 18:33
Replies: 82
Views: 39,362
Posted By chornedsnorkack

That one is trivial. 100 %. No lift in vacuum. ...

That one is trivial. 100 %. No lift in vacuum.


This one is more interesting.

Making viscosity equal to zero makes Reynolds number infinite.

What will happen to the coefficient of lift of a...
Forum: Spectators Balcony (Spotters Corner)
20th Dec 2008, 09:16
Replies: 1
Views: 555
Posted By chornedsnorkack

More delays

More delays. See:
China's ARJ21 faces further six-month delay in first delivery (http://www.flightglobal.com/articles/2008/12/19/320328/chinas-arj21-faces-further-six-month-delay-in-first.html)
...
Forum: Tech Log
19th Dec 2008, 14:53
Replies: 25
Views: 6,592
Posted By chornedsnorkack

Not only in climb. Consider plane in a...

Not only in climb.

Consider plane in a steady level flight. At some AoA, suppose that the thrust is exactly horizontal.

Since the flight is level, drag is exactly horizontal (and equal to...
Forum: Tech Log
16th Dec 2008, 20:29
Replies: 25
Views: 6,592
Posted By chornedsnorkack

So, suppose that you are changing the angle of...

So, suppose that you are changing the angle of attack of an infinite, symmetrical airfoil.

Due to symmetry of the airfoil relative the the plane along the airfoil, the lift is zero at zero angle...
Forum: Private Flying
15th Dec 2008, 14:30
Replies: 10
Views: 1,104
Posted By chornedsnorkack

See ...

See
http://www.pprune.org/private-flying/354607-if-flies-floats-what-if-rolls.html

A short comparison: the most produced thing that flies is Cessna 172, and a Cessna 172R is worth about US$ 240...
Forum: Biz Jets, Ag Flying, GA etc.
13th Dec 2008, 19:48
Replies: 28
Views: 3,918
Posted By chornedsnorkack

Is flying for a private owner for hire or reward...

Is flying for a private owner for hire or reward commercial flying?
Forum: Private Flying
13th Dec 2008, 19:07
Replies: 4
Views: 764
Posted By chornedsnorkack

If it flies, floats or... what if it rolls?

A famous proverb states:
"If it flies, floats or *****, do not buy it!"
What if it rolls?

The most produced thing that flies is Cessna 172. It accommodates one driver and 3 passengers. A Cessna...
Forum: Tech Log
12th Dec 2008, 17:51
Replies: 84
Views: 16,141
Posted By chornedsnorkack

Probably, though I cannot see why. FAR...

Probably, though I cannot see why.

FAR 125.263 says that



Somewhere else in FARs, cannot find where, is the requirement that no transport plane may become unsafe by incapacitation of any one...
Forum: Biz Jets, Ag Flying, GA etc.
12th Dec 2008, 17:00
Replies: 28
Views: 3,918
Posted By chornedsnorkack

Does it mean that a free flight is a flight for...

Does it mean that a free flight is a flight for reward - that is, reaching a destination the pilot wants to reach, logging flight time or the enjoyment of flying count as rewards in kind and...
Forum: Biz Jets, Ag Flying, GA etc.
12th Dec 2008, 05:36
Replies: 28
Views: 3,918
Posted By chornedsnorkack

So, what is the maximum size of a plane which can...

So, what is the maximum size of a plane which can be flown by PPL in and out of USA?

In USA, Gulfstreams are under Part 91. Sounds like it should be perfectly legal to fly a Gulfstream as PPL -...
Forum: Spectators Balcony (Spotters Corner)
11th Dec 2008, 10:16
Replies: 1
Views: 430
Posted By chornedsnorkack

Second Superjet

See
PICTURE: An-124 flies Superjet 100 airframe to fatigue-test centre (http://www.flightglobal.com/articles/2008/11/05/318436/picture-an-124-flies-superjet-100-airframe-to-fatigue-test-centre.html)...
Forum: Tech Log
10th Dec 2008, 17:04
Replies: 20
Views: 3,937
Posted By chornedsnorkack

A cute feature of Tu-154 is 12 main wheels. B727...

A cute feature of Tu-154 is 12 main wheels. B727 has just 4, and they are very heavily loaded (737 and 320 are lighter, while the bigger planes have 8 or more wheels).
Forum: Tech Log
8th Dec 2008, 14:02
Replies: 15
Views: 4,973
Posted By chornedsnorkack

Is Trent XWB based on Trent 1000? If yes, do...

Is Trent XWB based on Trent 1000?

If yes, do Trent 1000 problems afflict the delivery date or range of Airbus 350?
Forum: Spectators Balcony (Spotters Corner)
3rd Dec 2008, 15:17
Replies: 1
Views: 332
Posted By chornedsnorkack

Last time a plane was on time?

ACAC ARJ21 recently flew, at last. LATE.
Sukhoi Superjet flew this May, LATE. The tests have been delayed even after that.

Airbus 380 entered into service in October 2007. LATE. The production...
Forum: Spectators Balcony (Spotters Corner)
1st Dec 2008, 20:52
Replies: 18
Views: 1,059
Posted By chornedsnorkack

All planes, conventionally or unconventionally...

All planes, conventionally or unconventionally configured, have the same freedoms of movement. 3 translational and 3 rotational ones, incl. yaw. And stabilities for all six freedoms.

What are fin...
Forum: Spectators Balcony (Spotters Corner)
1st Dec 2008, 13:23
Replies: 18
Views: 1,059
Posted By chornedsnorkack

But there are planes which do not have vertical...

But there are planes which do not have vertical surfaces at all. The classic Etrich Taube (which has tail with tailplane and elevator, but neither fin nor rudder - turns are made solely by wingtip...
Forum: Tech Log
28th Nov 2008, 16:26
Replies: 21
Views: 5,695
Posted By chornedsnorkack

This is a reason why Airbus built A340-500/600...

This is a reason why Airbus built A340-500/600 rather than A330-500/600.
Forum: Tech Log
28th Nov 2008, 16:07
Replies: 21
Views: 5,695
Posted By chornedsnorkack

A slower tip speed propeller loses its propulsive...

A slower tip speed propeller loses its propulsive power faster.

It is possible to design a turboprop which is pretty fast. Tu-95 has swept wing, counterrotating turboprops - and it is very fast...
Showing results 1 to 35 of 827
 
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