Airplane Porn (and the occasional helicopter)

[goes2fast]

22 hours ago, wayno said:

We have an approach like that at PDX, the runway running SW/NE, them planes are 100 feet(sometimes less)approaching over Marine Dr dike road.

I have also see some really low approaches over hiway 512 at McCord AFB while driving by, the B-2(Stealth Bomber) was one, not as low as that commercial prop plane in that photo, but close to that low, this was back in the 90s.

When I first moved to LA for my job at UA I would be on the balcony of my apartment when 747s would land you could reach up and touch the landing gear, at least it felt like it! 🤣

[J-Luis]

Princess Juliana International Airport, Maho Beach, St. Maarten.

[J-Luis]

By my not-too--scientific measurement, there is approximately 8000 feet of runway at St. Maarten. 

 

I looked up how much space is needed to land a 747... oh boy... so many factors... flap angle, runway friction, etc.  

A Boeing 747-8 landing with 85% of its payload and 30% of its fuel, weighs 92% (8F) or 98% (8i) of its Maximum Landing Weight (MLW). The FAA/EASA Minimum runway length requirements for MLW landings are 7,500ft (~2,300m) for the 747-8F, and 6,750ft (~2,000m) for the 747-8i. However, the landing distance (at sea level) is far less, at about 5,500ft and 4,750 ft. This is because the plane does not land where the runway begins, nor does it stop where the runway stops, planes operate somewhere in the middle. For calculating the runway length minimum for a commercial aircraft with a MLW of over 100,000 lbs., you multiply the length of the aircraft (a 747 is 250 ft.) by 8, or in this case, 2000 ft.

 

 

 

[wayno]

46 minutes ago, J-Luis said:

Princess Juliana International Airport, Maho Beach, St. Maarten.

This is insane, I would be worried about being sucked into the vacuum created by the plane as it past by like a ship takes people with it when it sinks bow first and they are on the stern(the last ones to get wet), there is this thing called vortices(vortex) that are created when something that big goes by.

 

[wayno]

11 hours ago, goes2fast said:

When I first moved to LA for my job at UA I would be on the balcony of my apartment when 747s would land you could reach up and touch the landing gear, at least it felt like it! 🤣

 

Why would anyone live in a place like that, cheap rent and your broke?

[J-Luis]

St. Maarten... buy 5 and get 1 free. 

[goes2fast]

14 hours ago, wayno said:

 

Why would anyone live in a place like that, cheap rent and your broke?

You got it, I had been unemployed so long by the time I moved to LA for the job that I had lost everything, wife house, newer vehicle ETC. I had to borrow money from a relative to make the move for a $6.60 per hour part time job. It took 7 years to get full time and a transfer back to Colorado but I managed to move to a better area after a couple of years. I retired 31 years later @  $37.00 per hour with flight benefits and a livable pension.

[Jesse C.]

 

[Jesse C.]

[DanielC]

There is no suction below a plane, think about it, there has to be a higher pressure under the plane and wings, to provide lift.  Yes, there are wingtip vortices, but those get damped with ground contact.

 

When the 747 was designed, it was by far the largest passenger airplane.  Airports had to be redesigned to accommodate its passenger size.   But to enable it to be used at existing airports, it was designed with a fairly low landing speed for it's size.  Boeing had a lot of experience gained with the 727, and the wings and flaps for that plane.   Some said to do not put the flaps down on a 727, you unfold the whole d--- wing.

 

In early 2018, I got a chance to ride in a British Airways 747, from Chicago to London, Heathrow.  landing at LHR was one of the smoothest landings I have had in a plane.

Edited August 11, 2020 by DanielC

[wayno]

No that is not how a plane flies thru the air, it is the low pressure on top of the wing that creates lift therefore lifting the plane up.

But there is an effect when landing, with flaps extended and a high angle of attack there is a lot of lift being created to keep a passenger jet in the air, this causes turbulence, you can see this in the grass when a hang glider is landing, if there is camp fire smoke around you can see the smoke follow the glider passing by making a landing because of the low pressure above the wing, that turbulence created by a large heavy plane can create all sorts of issues on the ground especially when taking off as the engines are another aspect of this.

I know all this because I have watched videos of tell tails taped all over a hang glider wing in flight, the tell tails on the bottom of the wing are not smashed against the lower surface of the glider because of high pressure, they are pointed towards the tailing edge as that is the direction of the air flow, but the tell tails on top of the wing are always being lifted off the upper surface at maybe 30 to 45 degrees, when landing they can be pointed 90 degrees straight up from the top surface of the glider even though one is still moving forward.

Here is an example of what I am talking about, this is a photo of me flying a rigid wing(carbon fiber foot launched sail plane), my buddy had just towed me up with an ultralight and wanted to get a photo of me, you can see both spoilers on top of the wing being lifted, normally the spoiler is lifted to make a turn, this is a defect in my wing that I eventually fixed by removing the pocket the carbon fiber piece slid into, I used Velcro to hold it on and it never lifted again except when I turned when it was mechanically lifted, the point is they are lifted when flying normally because of low pressure on the top of the wing just like the tell tails I was talking about.

 

You can see they are both lifted even though I am flying straight and level.

 

 

Edited August 12, 2020 by wayno

[VFR800]

[Jesse C.]

[MikeRL411]

3 minutes ago, Jesse C. said:

 

Rice Paddy Daddy.

[VFR800]

[Jesse C.]

[Jesse C.]

[Jesse C.]

[VFR800]

[Jesse C.]

18 hours ago, VFR800 said:

 

Built here in San Diego, CA! 

 

[VFR800]

[a.d._510_n_ok]

[VFR800]

[Jesse C.]

6 hours ago, VFR800 said:

 

The Grey Ghost

 

[VFR800]