Questions tagged [concorde]

Questions about the legendary Aérospatiale-BAC Concorde.

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What measures do airliners and fighter jets take to protect the pilots and passengers from cosmic radiation? [duplicate]

How are passengers and crew of airliners and private jets, and fighter pilots, protected from cosmic radiation at high altitude? What protective measures were taken on the Concorde which cruised a ...
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6 votes
1 answer
285 views

Did the Concorde have darkened windows?

Did the Concorde and the Tu-144 have darker window glass than subsonic airliners, to protect from the Sun when flying above 9/10 of the atmosphere? Or were the crew and passengers at higher risk of ...
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5 votes
1 answer
366 views

Why did Concorde have a large anhedral?

Why does Concorde and many other deltas have their wings bent down?
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4 votes
1 answer
276 views

Did British Airways or Air France use Professional Flight Engineers on Concorde?

Did British Airways or Air France use Professional Flight Engineers (non-pilot PFEs) on Concorde or were the flight engineers required to be pilots (not necessarily qualified to fly Concorde) who ...
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11 votes
1 answer
396 views

Why did Concorde have a max pitch down attitude in supersonic flight?

In ITVV Concorde (documentary) as the flight's captain introduced the ADI (attitude director indicator) he explained the dotted line (circled above) as follows: [...] and the little orange dotted ...
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6 votes
1 answer
245 views

How does the drag coefficient behave at transonic and supersonic speeds for swept wing aircraft?

I was reading about wave drag and Concorde recently and found some contradictory information relating to drag. For example Wikipedia says: Afterburner was added to Concorde for take-off to cope with ...
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2 votes
1 answer
306 views

Why didn’t AFR4590 use heavy in its call sign?

https://aviation-safety.net/investigation/cvr/transcripts/cvr_af4590.php shows that AFR4590 didn’t use heavy in its call sign even though Concorde had a MTOW greater than 300,000 lbs. Unlike BAW, AFR ...
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5 votes
2 answers
680 views

How much aerodynamic heating do jetliners endure?

At cruise altitude (~ 33,000 ft) and cruise airspeed (~ 500 mph) how much do present-day airliners heat up due to air friction during their journey? Probably not much because there's still ice on the ...
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4 votes
2 answers
477 views

What made Concorde so heavy?

The Concorde burnt five times more fuel per passenger mile than the 747. A huge contributor must have been the immense empty weight per seat, three times that of the B747. B747-300 Concorde Empty ...
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13 votes
1 answer
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Why did Concorde have a 8000 ft airport elevation limit?

According to the Concorde Flying Manual Volume II(a) - 1 Operating Limitations - page 01.01.02 the take-off and landing airfield altitude is minimum -1000 ft and maximum 8000 ft. Why is Concorde ...
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29 votes
5 answers
6k views

Why was there no issue with the Tu-144 flying above land?

The Concorde didn't fly supersonically above land, it only could above the ocean. The Tu-144 however flew between Moscow and Almaty, so entirely above land; why did it fly like this? Didn't it have a ...
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14 votes
2 answers
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Could one see stars from the Concorde in daytime?

The Concorde flew to an altitude of 60,000 ft (18.3 km) where stars should be visible at noon, aren't they? This question asks on how high stars become visible, and it is said Blackbird pilots could ...
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  • 151
6 votes
2 answers
621 views

How high could Concorde potentially reach by going fast and pulling up?

If Concorde was travelling at mach 2 and FL 600 then pulled up, it would enter a trajectory that went above its normal flight altitude before diving back down. I assume that it couldn't pull up to ...
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2 votes
1 answer
278 views

How much the Concorde secondary nozzle contribute to thrust?

Does anybody knows how much did secondary nozzles bucket type on the Concorde's engines contributed to the increase of thrust during take of and sub-sonic flight? This is picture of the nozzles and ...
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3 votes
1 answer
347 views

Concorde thrust reversers engaged on parked aircraft, but not all engines?

Am I correct in interpreting this photo as showing one thrust reverser engaged, while the other is open? Do the thrust reversers fall into place on a fully powered down Concorde? Could this be caused ...
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7 votes
3 answers
8k views

If the Concorde had an engine fail at cruise altitude, would they enter the coffin corner?

I know the coffin corner is only meant for subsonic aircraft, but if the Concorde is just cruising at Mach 1 and had an engine failure and also lost that afterburner, would it enter a coffin corner ...
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15 votes
3 answers
3k views

Why were the windows on the Concorde about the size of a hand?

I just saw a comparison between the 787 and Concorde windows. I could be wrong but it almost seems like a hand could cover the majority of the window.
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3 votes
1 answer
519 views

Why doesn't Concorde stall when passing Mach 1, where a normal airliner does?

As Jay Carr asked: What is a high speed stall?, Jan Hudec explained: A difference from normal stall is that after supersonic flow separation the lift remains proportional to angle of attack and so ...
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7 votes
1 answer
2k views

What are these hexagonal things under the Concorde's neck?

The Concorde had a pair of dark-coloured hexagons under each of its forward boarding doors, as seen in this picture (showing the hexagons on the left side of the Concorde's neck): British Airways ...
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2 votes
1 answer
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Why didn’t the Concorde have flap-canards like the Tu-144?

One of only two ways of which I am aware in which the Tu-144 was “ahead” of the Concorde1 was in its use of retractable flap-canards, which increased the lift on the front of the aircraft at low ...
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4 votes
1 answer
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What was the speed limitations for droop nose on the Concorde?

Lowering gears or extending flaps comes with limitations. Given the answer of this question I suppose the limit speed for full nose down is about 325 kt. My question is: what were the limit for all ...
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3 votes
1 answer
590 views

What were the Concorde's emergency procedures for an uncommanded droop-nose extension in flight?

The Concorde had a droop nose, which swung down during taxi, takeoff, and (especially) landing, so that the pilots could see where they were going without the long nose getting in the way. During ...
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4 votes
1 answer
801 views

Could the Olympus 593 have been windmill-restarted during supersonic flight?

The Rolls-Royce/SNECMA Olympus 593 (which powered the Concorde) used a complex intake-ramp system to improve the engine's efficiency and prevent an engine shutdown or failure during supersonic flight ...
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1 answer
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Did factors specifically related to the concorde design influence the Air france flight 4590 crash?

This youtube video partially attributes the retirement of all concorde fleets to the airfrance flight 4590 crash: Were the factors in this accident due to the ...
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31 votes
3 answers
9k views

Was the transatlantic crossing for Concorde too short to reach optimal cruising altitude?

When listening to Gander/Shannon ATC on shortwave, you could hear Concorde communicate its planned flight levels at longitudes from 20 West till 50 West. What I remember is that it would continue ...
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44 votes
4 answers
17k views

Why was Concorde never sold as a private business jet?

Airliners like Boeing 747 and even Airbus 380 are at times considered as personal jets for extremely wealthy people. Looking from the side, Concorde was ideal for this role: while not very big, it ...
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4 votes
1 answer
272 views

What might the business model be for a hypersonic jet? [closed]

According to this video, NASA and Boeing are doing research into a new generation of hypersonic passenger planes that can travel at Mach 5. The designs look really cool and I would love to see them in ...
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5 votes
4 answers
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Why did the FAA ban all supersonic flights over the United States, rather than only supersonic flight in densely-populated areas?

A major part of why the Concorde was far less of a hit than predicted, and of why the many 1980s and 1990s supersonic transport projects never got off the drawing board, was that the FAA had banned ...
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2 votes
2 answers
875 views

Would the Concorde have been better off using a tailed delta wing?

In one of the answers to this question about the Concorde's lack of high-lift devices on its wings, it was pointed out that the Concorde, using a tailless delta wing, wouldn't have been able to use ...
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11 votes
3 answers
3k views

Why did Concorde not have horizontal stabilizers?

The Concorde did not have horizontal stabilizers or elevators. As a result, the pilots have to move fuel around the aircraft to trim it up or down, as sluggish and hazardous move. Why did the design ...
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13 votes
1 answer
787 views

Did Concorde's sonic booms affect other air traffic?

Given that Concorde's sonic boom reached the ground, it also must have reached other nearby air traffic. How was this dealt with? I imagine passengers would not welcome hearing a loud boom during ...
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29 votes
2 answers
11k views

Why didn't the Concorde have flaps or slats?

It's well known that the Concorde had no flaps or slats. The lack of high-lift devices considerably reduced lift at low speeds, requiring the Concorde to take off and land at higher speeds and angles ...
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29 votes
5 answers
11k views

Why was the Concorde painted white and not black?

It's well-known that the stated reason the Concorde was painted predominantly white was to mitigate heating problems. However, given that the source of the Concorde's thermal woes wasn't excessive ...
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15 votes
2 answers
3k views

What are those things under the Concorde’s cockpit windows?

I’ve noticed there are little bits sticking out under Concorde’s cockpit windows and they’re too small to be canards. Are they some kind of vortex generator or something? (Source)
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1 vote
0 answers
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What max Mach number of the blade tips on Concorde's engines? [duplicate]

What was the maximum velocity and Mach speed of blade tips in Concorde's engines?
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1 vote
0 answers
88 views

Where are elevators located in aircraft with delta wings? [duplicate]

Where were elevators located in aircraft with delta wings, notably the Concorde and the Blackbird SR-71? If they didn't exist, how did these aircraft perform the nose up maneuver mid-air and at take ...
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2 votes
3 answers
493 views

What is the maximum speed for regulation of sonic boom noise?

If fuel cost and fuel efficiency were not the issue, what is the maximum speed (air speed and ground speed) that business jets or airliners could travel at without exceeding the maximum noise and ...
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10 votes
0 answers
2k views

How loud was the Concorde's sonic boom at the ground level? [duplicate]

Before the Concorde was sent into retirement, their supersonic flight paths were restricted to the ocean because of concerns about sonic boom on the ground. But just how loud was this boom? Was it ...
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3 votes
2 answers
480 views

What's Concorde's engine fan blade tip speed at full thrust?

I can't find anything on the web about the Concorde's Snecma engine fan blade tip speed at full thrust. Any ideas?
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-2 votes
5 answers
710 views

Should all aircraft have landing gear debris deflectors, following the Concorde disaster?

Since it's certain that debris deflectors would have stopped the piece of tyre that punctured Concorde's fuel tanks in the fateful Air France 4590 disaster and caused an explosion, why are they not ...
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4 votes
1 answer
795 views

What were the effects of the oil crises on the Concorde ticket prices?

One of the things that is considered to have greatly hampered Concorde's success were the dramatic oil price increases due to the 1973 oil crisis (the 1979 one surely didn't help either, but it was ...
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15 votes
1 answer
2k views

Why were there passengers allowed on Concorde's route proving flights?

Based on this site, Concorde needed to fly 750 hours to prove its airworthiness and be used in regular service. Air France and British Airways flew two Concords (F-BTSC and G-BOAC respectively) on a ...
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6 votes
2 answers
853 views

Travelling at faster than mach 1, how sharp could Concorde turn to avoid injury to passengers?

To avoid injury to passengers (too many G's) was there a max 'sharpness' of the turns it made when travelling at certain speeds?
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5 votes
1 answer
1k views

What protection did the Concorde have against an uncontrolled decompression?

The Concorde's cruising altitude was 60,000 ft. I believe if the cabin ruptured at this altitude, everyone onboard would be almost instantly killed, if not from the Armstrong limit then from hypoxia (...
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  • 1,019
9 votes
1 answer
964 views

Could the Concorde reliably land with all engines out?

The Concorde was designed to fly at supersonic speeds; because of this its delta wings produce more drag at subsonic speeds. My understanding is that delta wings can produce a large amount of lift at ...
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  • 1,019
32 votes
2 answers
9k views

Why doesn't the Concorde have any wing fences?

A Wing Fence is a straight, vertical "fence" running from forwards to backwards down the wing. This MiG-17 has three fences per wing. I've also seen them on delta-winged aircraft such as the MiG-25. ...
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5 votes
2 answers
2k views

What would have happened when the Concorde's low-pressure emergency system brought it lower mid-flight?

My understanding is that the Concorde was equipped with a system that automatically lowered the aircraft to a safe altitude if cabin pressure was lost. I know such emergency never occurred in its ...
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3 votes
2 answers
2k views

Why is the Concorde, and not other aircraft, getting this fog/condensation, over the wing, at *takeoff*? [duplicate]

Several pictures of the Concorde taking off, show a cloud of water droplets (fog) above the wings. Like this: I assume the fog is created due to low pressure over the wings. But, doesn't the size ...
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9 votes
1 answer
2k views

Where are the locations of the elevators or horizontal stabilizers in a Concorde?

I don't find the horizontal stabilizers or the elevators of a Concorde at the tail section like other aircrafts. Are they fitted beside the ailerons in the wings?
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10 votes
1 answer
754 views

What is the history of Concorde motto "May Concorde bring people closer" and medal?

I found this image of a medal figuring Concorde and a globe with two contours of continents, before and after Concorde, expressing the new speed of air transport with a motto "May Concorde bring ...
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