Search found 1295 matches

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by RJMAZ
Tue May 21, 2019 11:44 pm
Forum: Military Aviation & Space Flight
Topic: How important is top speed to a fighter these days ?
Replies: 22
Views: 1183

Re: How important is top speed to a fighter these days ?

Another example I have previously used to describe how fuel is more important than supercruise is the following: Take an F-22, remove an engine, plug the intake and fill the void with approx 9,000lb of fuel. Ignoring the asymmetrical thrust issue you now have an F-22 with half the thrust but 50% mor...

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by RJMAZ
Tue May 21, 2019 2:48 am
Forum: Military Aviation & Space Flight
Topic: How important is top speed to a fighter these days ?
Replies: 22
Views: 1183

Re: How important is top speed to a fighter these days ?

Thanks for the great responses They clarify how top speed is helpful in certain scenarios But as far as escaping from the enemy? If you turn tail and run aren’t you just presenting a super bright heat source for your attacker and a clear target for his missiles that far eclipse your own top speed? ...

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by RJMAZ
Mon May 20, 2019 1:28 pm
Forum: Military Aviation & Space Flight
Topic: How important is top speed to a fighter these days ?
Replies: 22
Views: 1183

Re: How important is top speed to a fighter these days ?

I've read something different about the Eurofighter and the F-35. The Eurofighter has even the ability to supercruise at Mach 1.21 with a combat load load. And official published numbers are even saying that it has the ability to supercruise Mach 1.5 with an air superiority missile load. And the F-...

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by RJMAZ
Mon May 20, 2019 12:41 am
Forum: Military Aviation & Space Flight
Topic: How important is top speed to a fighter these days ?
Replies: 22
Views: 1183

Re: How important is top speed to a fighter these days ?

Sustained high speed is more important than peak speed. Sustain speed allows you to escape the enemy and avoid getting chased down. It also gives the enemy less warning time. The maximum speed a fighter can sustain for say 30 minutes with a basic air to air load is the most important. Most fighters ...

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by RJMAZ
Sun May 19, 2019 11:27 am
Forum: Civil Aviation
Topic: Boeing TX: A Precursor to Boeing NMA?
Replies: 64
Views: 9380

Re: Boeing TX: A Precursor to Boeing NMA?

I've been telling everyone on here about this for the last year. Here is a post from 8 months ago. http://www.airliners.net/forum/viewtopic.php?f=10&t=1027931&p=20695851 "The new design software allows you to design in parallel. 100 parts can be open on 100 different computers at once w...

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by RJMAZ
Fri May 17, 2019 9:49 pm
Forum: Civil Aviation
Topic: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft
Replies: 802
Views: 142659

Re: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft

It is a shame the 787-8ER never came out. The smaller aircraft would reduce risk when opening new routes. Qantas could hit half of the countries in Europe with a daily flight and pretty much suck up every premium customer traveling between Australia and Europe. That's like a wet dream for for us av...

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by RJMAZ
Fri May 17, 2019 1:29 pm
Forum: Civil Aviation
Topic: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft
Replies: 802
Views: 142659

Re: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft

I used my model to do 2 flights SYD-CTU and CTU-LHR, You'd see why from this http://www.gcmap.com/mapui?P=SYD-LHR,+LHR-CTU-SYD The difference in total flight time was about 20 minutes and the fuel usage was about 12.5t in favour of the stopping flight. which looks to be about 5k usd. I was not expe...

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by RJMAZ
Fri May 17, 2019 9:06 am
Forum: Civil Aviation
Topic: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft
Replies: 802
Views: 142659

Re: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft

still tourists would not pay too much for the trip... so they'd go with EK or TK. But the real question is: how much modifications would need those planes? if it would cost peanuts (778 should be ready for it without modifications...) why wouldn't LH or BA or anyone with the ac try to deploy them t...

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by RJMAZ
Fri May 17, 2019 7:48 am
Forum: Civil Aviation
Topic: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft
Replies: 802
Views: 142659

Re: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft

I would estimate a quarter of a million people travel between Greece and Australia each year. Most indirectly. That can easily sustain a daily flight. And what a surprise, your assumptions are not supported by official published data. Where else have we seen this before...... https://www.tra.gov.au...

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by RJMAZ
Fri May 17, 2019 4:37 am
Forum: Civil Aviation
Topic: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft
Replies: 802
Views: 142659

Re: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft

Not at all convinced. Italy ranks 18th in the list of visitors to Australia in the year to Sep 2018, with 73,000 - less than 1,500 a week, or almost exactly 200 per day. Where did you pull that stat from? Singapore and Hong Kong are listed as one of the top tourist destinations for Australia when t...

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by RJMAZ
Thu May 16, 2019 10:14 pm
Forum: Civil Aviation
Topic: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft
Replies: 802
Views: 142659

Re: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft

How long would it be before the airlines who are loosing their premium traffic attempt to compete, and which frame will they use? While it may happen eventually, the competing airlines will have a large investment for 1-2 routes. Qantas will always have the advantage of a fleet size 3-4 times large...

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by RJMAZ
Thu May 16, 2019 10:53 am
Forum: Civil Aviation
Topic: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft
Replies: 802
Views: 142659

Re: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft

Take Australia- (continental) US for example. There was a time where the only flights were from MEL/SYD to LAX. Now you have flights from both to SFO, as well as SYD to DFW. With project Sunrise we'll get SYD-JFK as well as a potential MEL-JFK. MEL-DFW is surely not far behind. Then there is potent...

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by RJMAZ
Tue May 14, 2019 7:54 am
Forum: Civil Aviation
Topic: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft
Replies: 802
Views: 142659

Re: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft

Pretty obvious to see those who understand aerodynamics and those who are fluid dynamics challenged. If the A350 had such a large effective wingspan advantage it would burn less fuel less per hour than the 787 on all flights. 58.8m versus 67.95m effectice wingspan is a massive advantage. The lift t...

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by RJMAZ
Tue May 14, 2019 2:57 am
Forum: Civil Aviation
Topic: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft
Replies: 802
Views: 142659

Re: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft

Per posts on this forum, PER-LHR averages 25,000kg and I would honestly not be surprised if QF is looking at 250 seats or less in four classes so you'd be looking at a similar total payload (revenue cargo is likely going to be minimal due to the carriage cost). So even with a higher DOW than shown ...

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by RJMAZ
Tue May 14, 2019 2:25 am
Forum: Civil Aviation
Topic: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft
Replies: 802
Views: 142659

Re: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft

Ok.. So the curved up Boeing winglet reduces the effective wingspan by a 2 metres? The Airbus slightly sharper curved winglet increases the effective wingspan by 3 metres? Does anyone else thing that sounds crazy? Both A350 and 787 winglets have very similar sweep angles when looking from the top do...

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by RJMAZ
Mon May 13, 2019 11:49 pm
Forum: Civil Aviation
Topic: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft
Replies: 802
Views: 142659

Re: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft

Based on your new data at a payload of 36t can both aircraft comfortably fly the mission? That table shows only the 777-8 can fly the mission. If you look at the takeoff weights they are both above the 316T MTOW of the A350-1000. This means they can not carry enough fuel. So even with the unrealist...

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by RJMAZ
Mon May 13, 2019 11:38 pm
Forum: Civil Aviation
Topic: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft
Replies: 802
Views: 142659

Re: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft

my same models as previous with 36t loads. https://i.ibb.co/8XSWsgm/Project-sunrise-comparison-36k.png Why are you using DOW weights 8T below OEW for the A350-1000 and then using the actual OEW for the 777-8? Are you trying to making the 777-8 look heavy on purpose? It is worth noting to save peopl...

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by RJMAZ
Mon May 13, 2019 1:46 pm
Forum: Civil Aviation
Topic: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft
Replies: 802
Views: 142659

Re: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft

Subtopic, I think that would be the best longer term Boeing strategy for big twins. The 787-8, 787-9, 787-10 wing proved maxed out for the -10, limiting it's payload-range for typical flight to/from Asia. The segment where Airbus sold 900 A350's. If Boeing up-sizes the 787 wing Thr 787NEO in 10 yea...

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by RJMAZ
Mon May 13, 2019 3:33 am
Forum: Civil Aviation
Topic: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft
Replies: 802
Views: 142659

Re: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft

Anyways, 789 vs A359 isn’t the same as A35K vs 778. Even though A359 is heavier than 789, A359 has a lower span loading and wing loadOing. A359 is only slightly heavier while its wings are considerably longer and bigger. That’s why A359 has a lower induced drag than 789. 789 generates less parasiti...

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by RJMAZ
Sun May 12, 2019 3:56 pm
Forum: Civil Aviation
Topic: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft
Replies: 802
Views: 142659

Re: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft

Show us the proof that the GE9X will be cheaper to maintain, otherwise retract the statement as being more made up hogwash. You are the one that brought up maintainance cost in the first place, that the A350 will be cheaper. Then you ask me to provide proof. How about you provide proof. All of the ...

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by RJMAZ
Sun May 12, 2019 10:23 am
Forum: Civil Aviation
Topic: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft
Replies: 802
Views: 142659

Re: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft

Lucky Qantas doesn’t need to pay for the higher cost of aircraft, crew, navigation charges, landing fees, maintenance etc which all higher with a larger/slower aircraft. Qantas operate 787's which share a type rating with the 777. Pilot training would then be cheaper with the 777X. Rolls Royce has ...

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by RJMAZ
Sun May 12, 2019 9:19 am
Forum: Civil Aviation
Topic: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft
Replies: 802
Views: 142659

Re: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft

So you effectively a ad a proportion of fuel per value of payload till you reach MTOW? (37:63) surely that means the A351 maintains its slight advantage until it gets to its MTOW then the 778 closes the gap quickly and then takes over pretty quick as it has a little more head room dependent on DOW ...

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by RJMAZ
Sat May 11, 2019 12:20 pm
Forum: Civil Aviation
Topic: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft
Replies: 802
Views: 142659

Re: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft

If it’s linear then that would be right I’d guess and although I’m 100% sure it isn’t linear I don’t know how far off it would be. How did you do extend the data for the 778X? You know it won't be far off. You've provided data for 310T and 315T takeoff weights for the A350-1000. We can see which nu...

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by RJMAZ
Sat May 11, 2019 9:32 am
Forum: Civil Aviation
Topic: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft
Replies: 802
Views: 142659

Re: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft

It doesn't matter if the fuselage is 1 meter or 20 meters as long as the circulating air is distributed over a longer distance Actually it does. Lets take two aircraft with a 60m wingspan. Aircraft A has a 2m wide fuselage Aircraft B has a 10m wide fuselage a reduced height oval. Now each wing on a...

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by RJMAZ
Sat May 11, 2019 9:24 am
Forum: Civil Aviation
Topic: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft
Replies: 802
Views: 142659

Re: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft

Using my data? We’re you in my house last night? My model doesn’t work like that. It does it in reverse and tells you what your takeoff weight needs to be based on the mission requirements. It isn’t as linear as you might think because of the hold at the end etc. Your table gave all the information...

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by RJMAZ
Fri May 10, 2019 11:20 pm
Forum: Civil Aviation
Topic: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft
Replies: 802
Views: 142659

Re: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft

Thanks. This is why I asked the payload question and the assumption of 30t for both aircraft. Payload is often additional revenue in terms of either pax or cargo. So the question is which frame can carry the most payload the cheapest? Payload meaning revenue. It sounds like you're saying the 778 is...

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by RJMAZ
Fri May 10, 2019 2:21 pm
Forum: Civil Aviation
Topic: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft
Replies: 802
Views: 142659

Re: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft

The A35K may use 2-3% less fuel than the 778 and may be 1-2% quicker as well. Add to this the fact that the A35K will be more versatile within the network than the 778, I see no operational (non-commercial) reason for QF to go for the 778. You have completely misinterpreted the table. The 777-8 abs...

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by RJMAZ
Wed May 08, 2019 9:42 am
Forum: Civil Aviation
Topic: Boeing 767: Fuselage size always limited profitability??
Replies: 85
Views: 10027

Re: Boeing 767: Fuselage size always limited profitability??

The 767 fuselage size INCREASED profitability. The 767-300ER was the smallest aircraft that could fly 5500+nm. It opened up new long thin routes. As the engine size in the 1980's were limited had the 767 been 8ab it would not have been able to fly as far. So going with 7ab allowed it to sell in huge...

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by RJMAZ
Wed May 08, 2019 8:52 am
Forum: Civil Aviation
Topic: Could a 3-4-3 77W replace 744 seat for seat? What about the 779?
Replies: 6
Views: 2221

Re: Could a 3-4-3 77W replace 744 seat for seat? What about the 779?

If you take into account the cabin area for the stairs in the 747-400 then the 777-9 has very similar seating area. A nearly perfect one for one replacement. Also in terms of payload over a certain distance it will be very similar. The 777-300ER has less seating area than the 747-400. If you fit the...

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by RJMAZ
Wed May 08, 2019 5:12 am
Forum: Civil Aviation
Topic: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft
Replies: 802
Views: 142659

Re: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft

Not sure it's been answered or not, but what would happen to SYD-SIN-LHR? Would it be cancelled? The Singapore flight is actually critical to the success of project sunrise. I have heard rumours that it will get used to carry the bags for the project sunrise flight on bad weather days. This will al...

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by RJMAZ
Wed May 08, 2019 3:49 am
Forum: Civil Aviation
Topic: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft
Replies: 802
Views: 142659

Re: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft

Aircraft empty weight is mainly important when it comes to short haul aircraft. To lift a 100 kg block of concrete and a smooth 100 kg of ice vertically takes the same amount energy. Drag does not come into the equation. The dominant drag in cruise is skin friction, the wing area alone on the 77X i...

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by RJMAZ
Tue May 07, 2019 10:00 pm
Forum: Civil Aviation
Topic: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft
Replies: 802
Views: 142659

Re: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft

I very, VERY much doubt that the 778 would only require only 2T more fuel to carry 20T more along the way... that would require the kind of engine efficiency that will likely come with the next generation of wide-body sized GTFs, or some other major design evolution. My guess would be closer to 10T...

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by RJMAZ
Tue May 07, 2019 1:35 am
Forum: Civil Aviation
Topic: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft
Replies: 802
Views: 142659

Re: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft

I have always said the 777-8 has this in the bag. Pavement loadings are not important when operating from megahubs. The A350-1000 would need huge modifications to fly this route. The small MTOW increases mentioned here are not enough. At higher weights the initial cruise altitude will be worse which...

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by RJMAZ
Fri May 03, 2019 8:08 am
Forum: Civil Aviation
Topic: Boeing 777X Testing Thread - 2019
Replies: 318
Views: 90379

Re: Boeing 777X Testing Thread - 2019

How is that possible?? I was under the impression that the plane will be lighter due to the new technologies and materials. It would have been lighter if the wing was kept the same size and the fuselage was the same length. The 777X wing is significantly bigger which offsets any weight saving from ...

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by RJMAZ
Fri May 03, 2019 2:50 am
Forum: Civil Aviation
Topic: Unravel the A350-900 lower-range variants: Domestic & Regional
Replies: 42
Views: 7059

Re: Unravel the A350-900 lower-range variants: Domestic & Regional

A320 MTOW is 80t and it carries 186 pax on domestic routes. 250t for 300 pax would be a very very expensive domestic operation How so? The MTOW does not reflect fuel burn or fees. The A350 could fly more than twice as far at that 250T MTOW weight. The A320 with 186 passengers at 100kg per passenger...

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by RJMAZ
Tue Apr 30, 2019 10:19 am
Forum: Technical/Operations
Topic: Narrowbody vs widebody costs trans Atlantic
Replies: 58
Views: 8707

Re: Narrowbody vs widebody costs trans Atlantic

The wing of A321/ B737 was not designed for transatlantic. Even though we have this discussion. I guess once Boeing introduces the NMA or Airbus puts a longer carbon wing on the A321, transatlantic passenger traffic will be done by narrowbodies. This is definitely something most people overlook. Th...

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by RJMAZ
Sun Apr 28, 2019 5:17 am
Forum: Civil Aviation
Topic: Cathay Pacific's Airbus A350-1000s and upcoming Boeing 777-9Xs
Replies: 62
Views: 15642

Re: Cathay Pacific's Airbus A350-1000s and upcoming Boeing 777-9Xs

Indeed Boeing and Airbus have been quite clever really in making sure that their wide bodies don't directly compete and thus avoiding the bloodbath if all their products were direct rivals. Yes they still compete, but most major airline groups will end up purchasing the 787, A350 and 779 I disagree...

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by RJMAZ
Sun Apr 28, 2019 1:52 am
Forum: Technical/Operations
Topic: Narrowbody vs widebody costs trans Atlantic
Replies: 58
Views: 8707

Re: Narrowbody vs widebody costs trans Atlantic

I love data. Thank you for data. I checked the area for a 787-10 (356.85 sq meters) and an A321 (128 sq meters), and that's a ratio of 2.8:1 How come a 787 doesn't hold more than twice as many seats as an A321. Wikipedia (the source of true knowledge) says an A321 can hold 240 people all economy, a...

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by RJMAZ
Thu Apr 25, 2019 9:48 am
Forum: Technical/Operations
Topic: Narrowbody vs widebody costs trans Atlantic
Replies: 58
Views: 8707

Re: Narrowbody vs widebody costs trans Atlantic

Could you provide any source? Narrow bodies weigh less per seat. Narrow bodies have less thrust per seat. Narrow bodies cost less to buy per seat. Not true at all. You must have cherry picked the worse widebody and the best narrowbody to get those numbers. With both aircraft at MTOW the widebody wi...

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by RJMAZ
Tue Apr 23, 2019 5:04 am
Forum: Civil Aviation
Topic: Cathay Pacific's Airbus A350-1000s and upcoming Boeing 777-9Xs
Replies: 62
Views: 15642

Re: Cathay Pacific's Airbus A350-1000s and upcoming Boeing 777-9Xs

It is interesting that the 316T A350-1000 had much greater range than the 777-9X on the charts. Yet the 777-9X is planned to go on the longer routes. So the 777-9X will fly with a low density premium cabin on longer routes and the A350-1000 will have a denser cabin on slightly shorter routes. This i...

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by RJMAZ
Sat Apr 13, 2019 11:30 am
Forum: Civil Aviation
Topic: OSM Aviation orders 60 all-electric planes
Replies: 55
Views: 5150

Re: OSM Aviation orders 60 all-electric planes

I am skeptic. First of all, how long does it take to charge these birds? Second, a 90kW engine with 70kW continuous. 70kW is comparable to a Cessna150, just that thing is like 50% heavier. Then a 92kWh battery capacity. 3.5 hour endurance. Something clearly doesn't add up. We've been over this is o...

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by RJMAZ
Fri Apr 12, 2019 3:23 am
Forum: Civil Aviation
Topic: Airliners and Carbon Offsets (Carbon Offsetting and Reduction Scheme for International Aviation)
Replies: 36
Views: 2361

Re: Airliners and Carbon Offsets (Carbon Offsetting and Reduction Scheme for International Aviation)

Can you share some more info. on the Norway thing ? http://www.bbc.com/future/story/20180814-norways-plan-for-a-fleet-of-electric-planes Norway has lots of very short flights as car travel is fairly slow due to mountains. Norway always does what it says. They set goals that most new car sales will ...

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by RJMAZ
Thu Apr 11, 2019 11:15 pm
Forum: Technical/Operations
Topic: The Electric Beaver
Replies: 17
Views: 1800

Re: The Electric Beaver

This needs to be done to an old Dash 7.

Being a small four engine aircraft it is ideal for a 500nm range electric aircraft using todays tech

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by RJMAZ
Sun Apr 07, 2019 9:13 pm
Forum: Civil Aviation
Topic: Airliners and Carbon Offsets (Carbon Offsetting and Reduction Scheme for International Aviation)
Replies: 36
Views: 2361

Re: Airliners and Carbon Offsets (Carbon Offsetting and Reduction Scheme for International Aviation)

Governments will force airlines to use electric aircraft on routes below 1000nm as a form of offset. So all the negatives of electric aircraft will be irrelevant as the airline will get huge taxes applied on any short haul flight operated by a conventional fueled aircraft. In previous threads we hav...

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by RJMAZ
Thu Apr 04, 2019 1:58 am
Forum: Military Aviation & Space Flight
Topic: USAF Considering New Build F-15X
Replies: 606
Views: 55906

Re: USAF Considering New Build F-15X

Will the F-15X have some significantly superior kinematics to an F-35A with two 5,000lb weapons on the wings? Unlikely, it may be a little better but not a lot better The F-15X would definitely have superior kinematics. The internal weapons bays and huge internal fuel capacity is a big limit on the...

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by RJMAZ
Wed Apr 03, 2019 12:46 pm
Forum: Civil Aviation
Topic: Two SIA 787s grounded owing to Trent 1000 TEN HPT issue
Replies: 65
Views: 17671

Re: Two SIA 787s grounded owing to Trent 1000 TEN HPT issue

Why didn't RR find these problems in testing or development ? Seems to me some engineers under pressure to try to keep costs down, but hurt the company with many millions in costs to fix now. RR skipped testing on the trent TEN. Have a read of my posts in this thread. http://www.airliners.net/forum...

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by RJMAZ
Tue Apr 02, 2019 4:08 am
Forum: Military Aviation & Space Flight
Topic: USAF Considering New Build F-15X
Replies: 606
Views: 55906

Re: USAF Considering New Build F-15X

I have been following this discussion and so have been plagued with the following question: How can the anti-sat mission be dismissed so easily? Only by a few. The charts I linked to above show that in US service the SM-3 Blk IIA is so significantly better than an air launched ASAT that the contest...

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by RJMAZ
Fri Mar 29, 2019 11:12 pm
Forum: Civil Aviation
Topic: Why Has Boeing Been So Reluctant To Build A New Narrowbody?
Replies: 127
Views: 16575

Re: Why Has Boeing Been So Reluctant To Build A New Narrowbody?

Off topic a little: Wow, in comparison the $6.5B CSeries program could then be considered a bargain ... :duck: Developing a plane is now becoming cheaper by the year. Digital design software is becoming so powerful at a very rapid rate. We have only seen a glimpse of this digital design technique a...

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by RJMAZ
Wed Mar 27, 2019 9:02 am
Forum: Civil Aviation
Topic: The future for small planes in the airline industry
Replies: 18
Views: 2493

Re: The future for small planes in the airline industry

Small electric regional aircraft will transform the industry.

The low noise will allow them to operate from general aviation airports close to town. They will feed the larger airports as well as see small towns connected with point to point flights.

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by RJMAZ
Thu Mar 21, 2019 9:58 pm
Forum: Military Aviation & Space Flight
Topic: USAF Considering New Build F-15X
Replies: 606
Views: 55906

Re: USAF Considering New Build F-15X

The fixed air intakes of the F-35 will limit top speed. They have to be tuned for a speed range and at a certain speed they would provide a hard limit. The F-15's variable intakes will allow it to fly much faster. Not really - Yes really. You thought the F-15 weighed 45,000lb empty back on page fou...

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