Search found 2013 matches

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by kitplane01
Wed Oct 27, 2021 12:02 am
Forum: Civil Aviation
Topic: Analyzing The Airbus A380’s Premature End
Replies: 75
Views: 9776

Re: Analyzing The Airbus A380’s Premature End

I did some calculations on how the A380 would have performed with nominal 787 engines. For this I ran my model with the A380 with standard engines rated with cruise SFC of 0.525lb/hr/lb over a near spec range flight. Then the SFC was dropped to 0.5 to represent a 787 technology level engine. Finall...

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by kitplane01
Tue Oct 26, 2021 3:14 am
Forum: Civil Aviation
Topic: Qantas to officially issue tender on narrowbody fleet replacement in coming days
Replies: 160
Views: 27289

Re: Qantas to officially issue tender on narrowbody fleet replacement in coming days

Interestingly I was sent a survey by QF last week. The main part was Aircraft types likes and dislikes. whether it was a clever use of algorithms or a structured survey, it went into a fair bit of detail regarding the Max series and what I knew about the aircraft. if I would fly on it if I had a ch...

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by kitplane01
Tue Oct 26, 2021 2:48 am
Forum: Military Aviation & Space Flight
Topic: US wants even more advanced training aircraft
Replies: 15
Views: 1395

Re: US wants even more advanced training aircraft

Could the old F-20 Tigershark aircraft be revived and upgraded for this role? I have always felt the F-20 was one aircraft design that never got its due. The aircraft would be perfect for advanced Jet Combat training and as aggressor aircraft for Training. It could also find export markets. As a li...

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by kitplane01
Sat Oct 23, 2021 1:07 am
Forum: Military Aviation & Space Flight
Topic: US wants even more advanced training aircraft
Replies: 15
Views: 1395

Re: US wants even more advanced training aircraft

This is an RFP for the 2nd stage trainer, the T-7A is the selected 1st stage trainer. It is enough different - hard points, possibly a gun, and different mission sets that a RFP is required. I am 100% positive that Boeing will be proposing a T-7A variant for this and they are in the post position o...

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by kitplane01
Fri Oct 22, 2021 1:47 am
Forum: Military Aviation & Space Flight
Topic: US wants even more advanced training aircraft
Replies: 15
Views: 1395

US wants even more advanced training aircraft

Both the USAF and the US Navy are looking to maybe buy new "Tactical Surrogate Aircraft" or "Advanced Tactical Trainers". My question .. why not buy T-7As equipped as needed? In what way is the T-7A less capable or cost more than than the other obvious competitors like the M-346 ...

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by kitplane01
Mon Oct 18, 2021 6:12 pm
Forum: Military Aviation & Space Flight
Topic: Serbia is to acquire C295 transport aircraft and H145 helicopters from Airbus
Replies: 2
Views: 557

Re: Serbia is to acquire C295 transport aircraft and H145 helicopters from Airbus

What is the Serbian mission for 2x C295? I didn't think the Serbian military went anywhere you could not drive in three hours.

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by kitplane01
Mon Oct 18, 2021 3:00 am
Forum: Technical/Operations
Topic: Is innovation declining?
Replies: 89
Views: 4648

Re: Is innovation declining?

Let me give you a small example of how advanced the A350 is. SAA used to lift about 135t of fuel and flew at M0.82/83 in the 317 seat A346 on the JNB-JFK route. Obviously this was dependent on conditions of the day. The 330 seat A359 lifted about 95t of fuel and flew at M0.85/86. Work out those sav...

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by kitplane01
Mon Oct 18, 2021 2:55 am
Forum: Technical/Operations
Topic: Is innovation declining?
Replies: 89
Views: 4648

Re: Is innovation declining?

I'm just pointing out that if you asked the traveling public to list priorities for the next generation of aircraft, you'd get a starkly different list than the one we're currently working to. We talk a lot about changing the world for the better, but are we? We tell travelers that customer satisfa...

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by kitplane01
Mon Oct 18, 2021 2:44 am
Forum: Military Aviation & Space Flight
Topic: Turkey seeks 40 new F-16s; upgrade 80 older ones
Replies: 23
Views: 2690

Re: Turkey seeks 40 new F-16s; upgrade 80 older ones

I think Turkey should be kicked out of NATO. No way to do it, legally speaking. It’s ridiculous that they were ever asked to become a member. They are the swore enemy of another NATO country Greece and are the source of tensions in Cyprus. They were invited in 1952. In that year, had the Soviet Uni...

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by kitplane01
Sun Oct 17, 2021 4:44 am
Forum: Technical/Operations
Topic: Is innovation declining?
Replies: 89
Views: 4648

Re: Is innovation declining?

I really think you people are missing the point!!! Aircraft are clearly better than before. They are safer and the cost less to operate. That’s really quite clear. Also, airlines have discovered that most people would rather have a cheap ticket than a comfortable ride. . They are actually offering m...

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by kitplane01
Fri Oct 15, 2021 5:32 pm
Forum: Military Aviation & Space Flight
Topic: Turkey seeks 40 new F-16s; upgrade 80 older ones
Replies: 23
Views: 2690

Re: Turkey seeks 40 new F-16s; upgrade 80 older ones

Disagree; the question is "does supplying Turkey with weapons align with American interests?" I'm no longer convinced that it does. I think Turkey should be kicked out of NATO. I tend to agree. Their interests do not align with the rest of us any longer. The danger is of course they'll ge...

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by kitplane01
Fri Oct 15, 2021 2:20 am
Forum: Technical/Operations
Topic: Is innovation declining?
Replies: 89
Views: 4648

Re: Is innovation declining?

Longtime lurker, first-time poster. How can it be that with billions spent on R&D, and undoubted technical breakthroughs, there is a perception that innovation is declining? It is simple. Travelers pay for tickets and would like the profits generated from those tickets to enable them to travel ...

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by kitplane01
Fri Oct 15, 2021 2:17 am
Forum: Technical/Operations
Topic: Is innovation declining?
Replies: 89
Views: 4648

Re: Is innovation declining?

The A350-900 has an OEW of 115,7t, whereas the A330-300 has 122t (Wikipedia). However, the A350 carries about 10% more people at similar layout. The OEW difference itself will result in fuel savings between 1/35 to 1/40 of that OEW difference per flight hour, so this would be at least 160kg per fli...

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by kitplane01
Thu Oct 14, 2021 12:41 am
Forum: Technical/Operations
Topic: Is innovation declining?
Replies: 89
Views: 4648

Re: Is innovation declining?

It really isn't all engine. The A350 wing is much more efficient than the A330/A340. The cruising altitude and speed of the A350 are quite different compared to the A340. Several thousand feet higher initial altitude. M0.85 compared to M0.81-0.82 doesn't sound like much but over medium and long hau...

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by kitplane01
Thu Oct 14, 2021 12:37 am
Forum: Technical/Operations
Topic: Is innovation declining?
Replies: 89
Views: 4648

Re: Is innovation declining?

The A350-900 has an OEW of 115,7t, whereas the A330-300 has 122t (Wikipedia). However, the A350 carries about 10% more people at similar layout. The OEW difference itself will result in fuel savings between 1/35 to 1/40 of that OEW difference per flight hour, so this would be at least 160kg per fli...

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by kitplane01
Thu Oct 14, 2021 12:31 am
Forum: Military Aviation & Space Flight
Topic: Turkey seeks 40 new F-16s; upgrade 80 older ones
Replies: 23
Views: 2690

Re: Turkey seeks 40 new F-16s; upgrade 80 older ones

Also, better for us to have the Turkish $$$ than Russia. Better for Turkey to ask us for spare parts the Russia. The question is "does Turkey get aircraft" but "when Turkey gets the aircraft, who are they paying". Disagree; the question is "does supplying Turkey with weapon...

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by kitplane01
Wed Oct 13, 2021 3:23 am
Forum: Technical/Operations
Topic: Is innovation declining?
Replies: 89
Views: 4648

Re: Is innovation declining?

Let me give you a small example of how advanced the A350 is. SAA used to lift about 135t of fuel and flew at M0.82/83 in the 317 seat A346 on the JNB-JFK route. Obviously this was dependent on conditions of the day. The 330 seat A359 lifted about 95t of fuel and flew at M0.85/86. Work out those sav...

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by kitplane01
Wed Oct 13, 2021 3:21 am
Forum: Military Aviation & Space Flight
Topic: Turkey seeks 40 new F-16s; upgrade 80 older ones
Replies: 23
Views: 2690

Re: Turkey seeks 40 new F-16s; upgrade 80 older ones

I'm surprised the Russians are so happy to supply hardware to the nation whose client completely hammered the Russian's client, and in doing so showed the limitations of Russian military hardware and Russian military support. Turkey's Near Great Power aspirations are in full swing, and even signifi...

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by kitplane01
Tue Oct 12, 2021 2:01 am
Forum: Military Aviation & Space Flight
Topic: Engine choices for the future C-17 replacement?
Replies: 80
Views: 4297

Re: Engine choices for the future C-17 replacement?

Curious then with the KC-10. Does the diversion scenario differs if the center engine fails as opposed to one of the wing engine? With the loss of the center you don't have to fight the stabilizer but you have to deal with the pitch imbalance. bt Nope, not at all. In fact, a two engine go-around is...

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by kitplane01
Tue Oct 12, 2021 1:48 am
Forum: Military Aviation & Space Flight
Topic: Engine choices for the future C-17 replacement?
Replies: 80
Views: 4297

Re: Engine choices for the future C-17 replacement?

There are 222 C-17s and 52 C-5s in the inventory. I don't see how the USAF is going to afford 500 aircraft of a similar size. Or have I missed something? And if it's smaller (or a tiltrotor) how does it move an Abrams tank? It would be smaller with low running costs and high economy of scale provid...

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by kitplane01
Tue Oct 12, 2021 1:24 am
Forum: Military Aviation & Space Flight
Topic: KC-46 now cleared to operationally refuel some aircraft
Replies: 69
Views: 7766

Re: KC-46 now cleared to operationally refuel some aircraft

What's my source? I'm in the conversion program to fly the KC-46. My source is the FCOM (-1), 3-3, the 11-2KC-46V3, etc. Can I send you a screenshot of what I've read, have access to, and done? Can you tell us about what the most common flight(s) are in a KC-46? Are you all refueling operationally,...

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by kitplane01
Tue Oct 12, 2021 1:16 am
Forum: Military Aviation & Space Flight
Topic: Engine choices for the future C-17 replacement?
Replies: 80
Views: 4297

Re: Engine choices for the future C-17 replacement?

The USAF would need to purchase around 500 aircraft to replace the C-17 and C-5M fleets but it would be superior in my opinion to a new large C-5 sized aircraft. I could see a huge number of C-130J operators buying it as it would have low operating costs and it would be the first strategic airlifte...

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by kitplane01
Tue Oct 12, 2021 1:14 am
Forum: Military Aviation & Space Flight
Topic: Engine choices for the future C-17 replacement?
Replies: 80
Views: 4297

Re: Engine choices for the future C-17 replacement?

De-rated Gen-X The lowest rated GenX has 70k thrust. You need 40k thrust. That’s not a derate it’s a new engine. Who says a future C-17 replacement needs exactly the same thrust as the current C-17? Derate to low 60s for life expectancy and you've got a decent engine for this mythical jet. 4 engine...

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by kitplane01
Sun Oct 10, 2021 5:06 pm
Forum: Technical/Operations
Topic: Could flap operation be automated?
Replies: 18
Views: 1704

Re: Could flap operation be automated?

I was wondering about this since flap movement is tied to variables like weight and speed. Could flight deck automation remove from pilots the task of lowering and raising flaps based on aircraft configuration? Yes, it is possible. No, it is not welcome. And not for a "human don't like automat...

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by kitplane01
Sun Oct 10, 2021 4:58 pm
Forum: Technical/Operations
Topic: Could flap operation be automated?
Replies: 18
Views: 1704

Re: Could flap operation be automated?

Don't know if it was mentioned, but in the F-16 both leading edge and trailing edge flaps are automatic and controlled by the flight control system. There are override switches to use in abnormals or emergency procedures. Good discussion here https://www.f-16.net/forum/viewtopic.php?f=21&t=2899...

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by kitplane01
Sun Oct 10, 2021 5:17 am
Forum: Military Aviation & Space Flight
Topic: Engine choices for the future C-17 replacement?
Replies: 80
Views: 4297

Re: Engine choices for the future C-17 replacement?

The C-17 fits USAF needs so perfectly that a reengine is highly likely, or at least a life extension. The engines offered for Boeing's NMA would be perfect, in particular RR's Ultrafan looks very promising towards the end of the decade. The chance of the C-17 getting new engines is zero. Engine tec...

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by kitplane01
Sun Oct 10, 2021 4:58 am
Forum: Technical/Operations
Topic: Could flap operation be automated?
Replies: 18
Views: 1704

Re: Could flap operation be automated?

I was wondering about this since flap movement is tied to variables like weight and speed. Could flight deck automation remove from pilots the task of lowering and raising flaps based on aircraft configuration? Yes. In fact, right now flaps are typically set to one of a few positions. If automated,...

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by kitplane01
Sun Oct 10, 2021 4:44 am
Forum: Technical/Operations
Topic: Is innovation declining?
Replies: 89
Views: 4648

Re: Is innovation declining?

Quick question: Suppose I wanted a number for how much more cost efficient airlines have improved per year. Can anyone provide a good argument for some number based on data and math? Because right now I'm thinking it's 1.2% per year over the period 1995-2019 (with some safety and noise improvements ...

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by kitplane01
Sun Oct 10, 2021 4:33 am
Forum: Technical/Operations
Topic: Is innovation declining?
Replies: 89
Views: 4648

Re: Is innovation declining?

Well, Percentage-wise, safety has improved greatly. There were few people dying 10 years ago, so a hard number to improve upon, but is has significantly improved. Ya know, I thought this was false. So I looked it up. In 1995, there were about 600 deaths per trillion rpk. Now it's about 60. So yep, ...

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by kitplane01
Sun Oct 10, 2021 4:27 am
Forum: Technical/Operations
Topic: Is innovation declining?
Replies: 89
Views: 4648

Re: Is innovation declining?

Well, Percentage-wise, safety has improved greatly. There were few people dying 10 years ago, so a hard number to improve upon, but is has significantly improved. And yes, 15% gains are A LOT, not going to save-the-planet-great, but the 15% promised by the NEO, was enough to force Boeings hand comp...

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by kitplane01
Sun Oct 10, 2021 4:24 am
Forum: Technical/Operations
Topic: Is innovation declining?
Replies: 89
Views: 4648

Re: Is innovation declining?

The measure of success is not the number of lines of code, nor the amount of data processed, but it's some combination of cost, environment, and safety. And those seem to be improving at the rate of 17% every 27 years. Improvement is not limited to fuel efficiency. Safety has improved, noise and ot...

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by kitplane01
Sat Oct 09, 2021 6:27 am
Forum: Technical/Operations
Topic: Is innovation declining?
Replies: 89
Views: 4648

Re: Is innovation declining?

Is the real cost effectiveness of cars changing faster than that of airliners? Is my productivity from an iphone 13 that much greater than when I used and iphone 7? Fred Cars are undergoing a revolution. It is possible to buy a self-driving (or steering assisting) car powered by batteries. Tesla th...

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by kitplane01
Sat Oct 09, 2021 6:16 am
Forum: Technical/Operations
Topic: Is innovation declining?
Replies: 89
Views: 4648

Re: Is innovation declining?

Again, there is massive innovation under the skin. Looking at A350 vs A330/A340, you have self-contained hydraulic actuators, allowing the deletion of the third hydraulic system, improved flight deck ergonomics, BTV, improved aerodynamics, airport navigation function, integrated EFB, distributed co...

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by kitplane01
Sat Oct 09, 2021 6:12 am
Forum: Technical/Operations
Topic: Is innovation declining?
Replies: 89
Views: 4648

Re: Is innovation declining?

To judge wether there has been innovation, you have to look at the 2 important drivers: 1/Economics(including emissions because fuel) 2/Safety Both have been drastically bettered over the last decade . To be clear ... you think flying cost "drastically" more 10 years ago, and was "dr...

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by kitplane01
Fri Oct 08, 2021 3:22 am
Forum: Military Aviation & Space Flight
Topic: Engine choices for the future C-17 replacement?
Replies: 80
Views: 4297

Re: Engine choices for the future C-17 replacement?

What is the scenario where you would need to deploy quickly with a fleet of C-17? Any war with China would need to slow build up of troops. There would not be an invasion of the mainland. You have bases in Japan and Austrailia to stage. The only potential in invasion scenario would be to the relief...

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by kitplane01
Thu Oct 07, 2021 5:37 pm
Forum: Military Aviation & Space Flight
Topic: Engine choices for the future C-17 replacement?
Replies: 80
Views: 4297

Re: Engine choices for the future C-17 replacement?

The only airframe that will make sense as a C-17 replacent (other than a C-17 clone) would be a BWB high wing transport with a ramp. The advantage is obvious. Higher efficiency means longer range. Engines can be configured as 2, or 3 for redundancy. 4 would be overkill with the higher by-pass turbo...

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by kitplane01
Thu Oct 07, 2021 5:35 pm
Forum: Military Aviation & Space Flight
Topic: Engine choices for the future C-17 replacement?
Replies: 80
Views: 4297

Re: Engine choices for the future C-17 replacement?

Getting back on topic.... What is the real question to be answered? What should replace the C-17, or what engine choice should be used to upgrade the existing C-17s to extend the life? If the topic truly is a clean-sheet design, you don't start with engines, you start with the mission needs. So in ...

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by kitplane01
Thu Oct 07, 2021 12:58 am
Forum: Civil Aviation
Topic: Boeing tipped to launch 777X freighter at Dubai Air Show
Replies: 146
Views: 23840

Re: Boeing tipped to launch 777X freighter at Dubai Air Show

What’s the logic behind sizing this new freighter between the 8 and -9 series ? Weight. Freighters want a competitive payload at range. If too short, not enough volume. If too long, they have to fly with empty space as they are at the weight limit. Boeing has been shopping a 777xF for years. By now...

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by kitplane01
Thu Oct 07, 2021 12:48 am
Forum: Military Aviation & Space Flight
Topic: Engine choices for the future C-17 replacement?
Replies: 80
Views: 4297

Re: Engine choices for the future C-17 replacement?

How does the US get sustained air superiority over Beijing? China has 2000 air force aircraft, and a large number of land based missiles. The nearest plausible US air bases are 600 mile away, and I have a hard time imagining US tankers surviving over China. If the US floods S Korea with all these l...

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by kitplane01
Wed Oct 06, 2021 5:14 pm
Forum: Military Aviation & Space Flight
Topic: Engine choices for the future C-17 replacement?
Replies: 80
Views: 4297

Re: Engine choices for the future C-17 replacement?

What was the most common mission for Marine MV22s during Afghanistan? The MV-22 couldn't do MVM as it could only transport two squads or a jeep sized vehicle and one squad. It was just working like a long range blackhawk. If the USAF put 500 large tiltrotors beyond enemy lines into the enemies capi...

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by kitplane01
Wed Oct 06, 2021 5:00 pm
Forum: Military Aviation & Space Flight
Topic: Engine choices for the future C-17 replacement?
Replies: 80
Views: 4297

Re: Engine choices for the future C-17 replacement?

What was the most common mission for Marine MV22s during Afghanistan? The MV-22 couldn't do MVM as it could only transport two squads or a jeep sized vehicle and one squad. It was just working like a long range blackhawk. If the USAF put 500 large tiltrotors beyond enemy lines into the enemies capi...

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by kitplane01
Wed Oct 06, 2021 5:18 am
Forum: Military Aviation & Space Flight
Topic: Engine choices for the future C-17 replacement?
Replies: 80
Views: 4297

Re: Engine choices for the future C-17 replacement?

I really liked this post. I think that's a great argument for the future tiltrotor. But I have doubts. How much of the future tiltrotor will be the mission you outlined, and how much will be just moving palleted cargo from one safe runway to another? Because year after year, that's the C-130s missi...

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by kitplane01
Tue Oct 05, 2021 11:22 pm
Forum: Military Aviation & Space Flight
Topic: Engine choices for the future C-17 replacement?
Replies: 80
Views: 4297

Re: Engine choices for the future C-17 replacement?

De-rated Gen-X The lowest rated GenX has 70k thrust. You need 40k thrust. That’s not a derate it’s a new engine. I believe below 50K GE is still partnered via Safran/CFM joint venture long term. Rumor is, they are scaling up the LEAP for the notional Boeing NMA or whatever it is to be called, to ar...

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by kitplane01
Tue Oct 05, 2021 7:19 pm
Forum: Military Aviation & Space Flight
Topic: Engine choices for the future C-17 replacement?
Replies: 80
Views: 4297

Re: Engine choices for the future C-17 replacement?

This was thinking in my simplistic response post. For the mission a C-17 replacement is intended for, which is large, critical cargo into and out of middle-of-nowhere regions, you can't rely on requiring all your power from one engine on one side and continuing out on your mission. "Circle bac...

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by kitplane01
Tue Oct 05, 2021 7:17 pm
Forum: Military Aviation & Space Flight
Topic: Engine choices for the future C-17 replacement?
Replies: 80
Views: 4297

Re: Engine choices for the future C-17 replacement?

This is why the C-17 and C-5M replacement will never do tactical work so it could be a big twin. If there is another large sustained conflict in a few years I could see an emergency bridging freighter needing to be purchased. The Kawasaki C-2 built by Boeing or LM would be the obvious pick. There i...

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by kitplane01
Tue Oct 05, 2021 7:15 pm
Forum: Military Aviation & Space Flight
Topic: Engine choices for the future C-17 replacement?
Replies: 80
Views: 4297

Re: Engine choices for the future C-17 replacement?

This two aircraft replacement would be great ... if large quad tiltrotors had an operating budget less than a ton of gold per hour. Seriously, sounds great but a C-130 costs $9000/hour and the much smaller MV-22 costs $17000/hour. That's (round numbers) twice as much for half the aircraft. The CMV-...

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by kitplane01
Tue Oct 05, 2021 7:09 pm
Forum: Military Aviation & Space Flight
Topic: Engine choices for the future C-17 replacement?
Replies: 80
Views: 4297

Re: Engine choices for the future C-17 replacement?

Question is, do you want stealth or not? Large high bypass engines are basically impossible to hide, so that requirement would lead to the use of multiple (4 or 6) smaller engines. Smart people disagree, but I want the lowest cost that transports the stuff to where it has to go. I don't want to sen...

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by kitplane01
Tue Oct 05, 2021 5:34 pm
Forum: Technical/Operations
Topic: Is innovation declining?
Replies: 89
Views: 4648

Re: Is innovation declining?

I think a lot of people tend to associate "innovation" with "revolutionary" or at least "disruptive". As an innovation economist, I'd argue that innovation is not necessarily to be measured in absolutes. A lot of incremental innovation is just as "innovative"...

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by kitplane01
Tue Oct 05, 2021 5:32 pm
Forum: Technical/Operations
Topic: Is innovation declining?
Replies: 89
Views: 4648

Re: Is innovation declining?

That maturity *is* the cause of some of the lack of innovation. We've solved the easy problems and the hard problems are hard so we make less progress (as measured by some metric like cost/seat-mile). If you're going to define innovation that way, then of course it's declining, because the laws of ...

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by kitplane01
Tue Oct 05, 2021 5:27 pm
Forum: Military Aviation & Space Flight
Topic: Engine choices for the future C-17 replacement?
Replies: 80
Views: 4297

Re: Engine choices for the future C-17 replacement?

That’s an odd rule that no major nation has. There have been tons of two engine military transports. More than I can remember. But I think al of these are currently or very recently operational. Japan - C2 Europe - C160, C235 C295, G222 US - C2, MV22, C-27 Russia - An 72 Brazil - c390 First, a twin...

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