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General aviation/airplane news and chat

If hydrogen is lighter than air then why do they need engines?

Makes you think.
Sssh. It's all part of the Great Reset(tm) if you say keep typing stuff like this, George Soros will personally inject with nano particles designed by Bill Gates and something something Rothchilds.
Of course the only people who can prevent this is Elon Musk and Russell Brand in their valiant crusade to expose the troof!
 
I can't imagine the economics of the SP being that great. You could easily operate that with two engines nowadays, I'm sure...
 
Hot off the back of some recent posts on the useless car gadgets thread and a conversation I was having with Mrs Voltz the other day after watching a YouTube video of an F35(? - a fly by wire, with vector thrust, painted with radar absorbing paint, inboard mounted missiles and gatling style 20mm canon, whatever that one is)

Anyway

Some of the aerobatics it was performing could only be done with the computers doing a lot of the heavy lifting and it got me wondering. As, say, with a car with a manual speed limiter which can be over ridden by simply pressing the accelerater "through" the set limit, could a pilot over ride the plane and get it to do something outside the "safe" envelope or is that envelope so big that the pilot would break before hitting those points

So one for DownwardDog and any other skygods
 
Hot off the back of some recent posts on the useless car gadgets thread and a conversation I was having with Mrs Voltz the other day after watching a YouTube video of an F35(? - a fly by wire, with vector thrust, painted with radar absorbing paint, inboard mounted missiles and gatling style 20mm canon, whatever that one is)

Anyway

Some of the aerobatics it was performing could only be done with the computers doing a lot of the heavy lifting and it got me wondering. As, say, with a car with a manual speed limiter which can be over ridden by simply pressing the accelerater "through" the set limit, could a pilot over ride the plane and get it to do something outside the "safe" envelope or is that envelope so big that the pilot would break before hitting those points


For a 100% FBW aircraft with 'relaxed stability' like F-35, Typhoon, etc. the answer is no and there would be no point in doing so. Without those limits the aircraft will almost always depart from controlled flight which is never beneficial in any situation.

For very specific purposes the FCS might get modified to allow extreme maneuvers outside of the normal envelope for testing or display. All of those super high alpha moves that Flankers do at airshows are done with a modified FCS and about a teaspoon of fuel in the jet.
 
I’m obviously talking uninformed fanboy bollocks as someone who is not a pilot, but building on DownwardDog ’s post above, would I be right to say that the manoeuvring agility of latest gen fighter jets must be a pretty secondary concern to the design requirements? Top Gun Maverick antics aside, I can’t imagine many potential dogfights between modern airforces nowadays that are likely to involve close quarter combat situations, never mind cannon fire.

And surely the most jaw-droppingly executed cobra manoeuvre would still not be able to fool a modern air-to-air missile, right?
 
I’m obviously talking uninformed fanboy bollocks as someone who is not a pilot, but building on DownwardDog ’s post above, would I be right to say that the manoeuvring agility of latest gen fighter jets must be a pretty secondary concern to the design requirements? Top Gun Maverick antics aside, I can’t imagine many potential dogfights between modern airforces nowadays that are likely to involve close quarter combat situations, never mind cannon fire.

And surely the most jaw-droppingly executed cobra manoeuvre would still not be able to fool a modern air-to-air missile, right?

The US have a very data driven, academic approach to this and their post Vietnam studies indicated that 90%+ of the time in air-to-air missile engagements whomever fires first will win. So their philosophy has to been to optimise the system of systems (aircraft, training, AEW&C, etc.) toward getting the first shot. The energy maneuverability requirements of the F-35 were baselined against the F/A-18 which it more or less achieves. They didn't want the 5th gen jet to be faster or have better turning performance than the aircraft it replaces but they did want it to have better low observability, sensor fusion, etc. to get that first shot.

The cobra and similar maneuvers look amazing (and I am sure they feel amazing when you do one) but they are of nugatory value in combat because they cause the airframe to shed massive amounts of energy. This means trading away height or speed or probably both which is never a good idea.

Old Russian дед does a few gut wrenching numbers in an Su-35S here while wearing a fleece that makes him look as if he's on his way to B&Q.

 
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Some welcome news today.


I already used one of those hi-tech scanners they've had one for a while but it's always been a lottery as to which lane you ended up in. If you got lucky and got the new CT scanner, you didn't need to get anything out of your carry on, and you just scanned the whole bag intact.
 
The SP one, SAA used to fly one to Heathrow in the 80's, don't think I've ever seen another though...

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I used to see the Bahraini Amiri Flight SP all the time when I worked there. Syrian Airlines SP used to drop in occasionally too. Syrian was the cheapest route from Minsk and Moscow to Bahrain so it was always loaded to the gunwales with 'dancers'.
 
I mean I have/have had a number of hobbies thay take enough time /effort that a significant other might complain. None of them would I have given up for anyone who sent a text like that....
 
When I was once bumped off an evening flight at LHR, and put on one of the hotels running parallel to the runway for the night, the hotel in question was advertising 'his and her' weekend stays: plane spotting on the roof with uninterrupted views of the northern runway for the boys, spa treatments galore for their wives :thumbs:
 
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When I was once bumped off an evening flight at LHR, and put on one of the hotels running parallel to the runway for the night, the hotel in question was advertising 'his and her' weekend stays: plane spotting on the roof with uninterrupted views of the northern runway for the boys, spa treatments galore for their wives :thumbs:


The Renaissance has rates that are specifically for people who want runway views:

AAA.JPG
 
My uncle used to have a guest house, just west of Heathrow. He had a regular customer who always insisted on the worst room (tiny, in the attic) because it had the best view of the planes coming or going.

I was born and spent my formative years with my bedroom overlooking the very final approach from the east to the northern runway. With no internet I whiled away my time looking at the planes coming in.

/nerd
 
I now want to know that the crazy aviation shit might entail...

I suspect the percentage of unmarried plane (and train) spotters is somewhat higher than the general population anyway :D

I met such a couple at Concorde's arrival at East Fortune some years ago and was told the story of how after many years of everything Concorde-related holidays, she got the upper hand and "her" choice of Concorde-free holiday prevailed.

So off they went to the peaceful West of Ireland.

Not long into the holiday, they heard a very familiar noise and a Concorde flew past at fairly low-altitude, doing the sort of flying that Concordes seldom if ever did in regular service.

Turns-out, pilots were undergoing training flights out of Shannon, practicing emergency procedures and the like. Her husband was in heaven as they saw Concordes virtually every day for the rest of their trip!

:facepalm::D
 
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