weasel1962
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I'm talking the use of the tanker as a cargo aircraft. The multirole in MRTT...lol. I'm not even sure you know what you're talking about.
Firstly, the bulk tanker fuel is carried in the wings. By only considering palletised cargo, you're already discounting a significant proportion of fuel load from the computation. Taking a 32/19 pallet ratio is already pseudo math not reflecting reality. We're talking tankers and you're talking cargo aircraft. I can't even consider that crude math.
What is reflecting reality is that when a plane goes on a sortie, it will use x lbs of fuel. When another plane goes on the same sortie, it will use y lbs of fuel.
Boeing is contending is that y > x where y = KC-45 and x = kc-767.
The question is simple. Do you agree with that?
I have not contended that the cargo role made up for ½ or a 1/3 or whatever, but I do have the observation that the cargo role is currently done by C-17 and C-5. And that is an inefficient way of transporting palletized cargo.Last I heard, the USAF were buying a tanker rather than a cargo aircraft. Even if we're talking about MRTT, your computation on palletised cargo would only be 1/2 the story, assuming that the cargo element is 1/2 the role.
You are contending that a transport jet carrying pallets will reach MTOW before it bulks out when loaded - is this so? That would be the premise for what you claim.Even if let's say we're talking about cargo aircraft, if your computation is based on pallet, isn't that the same as saying fuel per lb? Of course it is. You're claiming that fuel per lb is lower. That again is pseudo math as you have acknowledge. Cos neither of us know exactly how much cargo will the plane carry. Cos that's not the requirement.
Actually I see a lot of advantages of the KC-45 over the KC-767. Where they differ a lot is in the passenger/transport part, just as more fuel is carried further with less consumption of fuel per lb mile.Apparently, now we're not even talking about tanker aircraft. That's what you're telling me. We're talking about cargo aircraft cos I'm only allowed to look at palletised cargo? Sorry, but I don't fall for that...
Let's look at the decision, shall we? Last I heard, the DOD was buying next generation air-refueling aircraft. Suddenly, now it becomes MRTT. Amazing...
http://www.defenselink.mil/news/newsarticle.aspx?id=49244
It seems the MRTT part is very important in context of the current and future overall USAF structure. Best value in contrast to the cheapest solution that makes the requirement.The primary mission of the KC-X will be to provide aerial refueling to United States military and coalition aircraft in the war on terrorism and other missions. However, the Air Force also intends to take full advantage of the other capabilities inherent in the platform, and make it an integral part of the Defense Transportation System.
"From addressing national security threats to supporting rapid global strikes to providing urgently needed humanitarian operations, joint and coalition operations depend upon the rapid global mobility capabilities which the Air Force aerial tanker provides," said the general.
The RFP stipulates nine primary key performance parameters:
1) Air refueling capability
2) Fuel offload and range at least as great as the KC-135
3) Compliant Communication, Navigation, Surveillance/Air Traffic Management (CNS/ATM) equipment
4) Airlift capability
5) Ability to take on fuel while airborne
6) Sufficient force protection measures
7) Ability to network into the information available in the battle space
8) Survivability measures (defensive systems, Electro-Magnetic Pulse (EMP) hardening, chemical/biological protection, etc.)
9) Provisioning for a multi-point refueling system to support Navy and allied aircraft
Ms. Payton stressed that the department has gone through a rigorous review process for KC-X and has validated the RFP accurately reflects the requirements as laid out by the warfighter.
The final RFP defines an integrated, capability-based, best-value approach. The RFP includes specific factors for assessing the capability contribution of each offeror. Along with cost and assessments of past performance and proposal risk, these factors provide the source selection authority with means to determine the best value between proposals of significantly differing capabilities and cost.
http://www.af.mil/news/story.asp?storyID=123039360
Nope, it's buying a MRTT, to replace existing MRTTs. The current KC-135s & KC-10s transport cargo as well as acting as tankers. The USAF wants aircraft which can carry cargo & passengers as well as refuelling, and says so, to anyone who'll listen. Transport capability is defined as a secondary need, but it's in the System Requirement Document.Last I heard, the USAF were buying a tanker rather than a cargo aircraft. ...
Let's look at the decision, shall we? Last I heard, the DOD was buying next generation air-refueling aircraft. Suddenly, now it becomes MRTT. Amazing...
http://www.defenselink.mil/news/news....aspx?id=49244
I'm getting tired of this. You supply some evidence, & so will I. You made the first claim about top speed: back it up. You made the first claim about runway length: back it up. You made the first claim about range: back it up (and remember that absolute range is irrelevant in this context - it has to be range at which useful amounts of fuel can be offloaded). Etc. You can't make unsubstantiated claims then demand that others disprove them, & call what they say "Absolute rubbish" until they do.Link pls. Your claim is that EVERY professional who has evaluated the 2 aircraft says so. I'm sure it wouldn't be difficult to find one.
Absolute rubbish even at cost per ton of fuel. Since your claim is that EVERY professional who has evaluated the 2 aircraft says so. Link pls.
No they didn't. If you say they did, it wouldn't be difficult to find a link that says it.
Pseudo math again. Its like saying the C-5 can carry the most so ALL transport aircraft should be the C-5. I won't even bother to argue this point.
Absolute rubbish. Since you claim that published evaluations show it can use shorter runways. Show it.
Not looking for your bet. You claim EVERY professional who have evaluated the 2 aircraft disagrees with it, link pls.
Thank you for agreeing despite saying EVERY professional who has evaluated the 2 aircraft disagreeing with it.
Is that a fact? Link pls to the top speed.
Is that so? Amazing that GAO mentioned they conveniently to include that in their requirements. See my link above.
Ah ok. I thought it was because USAF apparently had understimated KC-45 opreational cost.I meant KC-767. Apparently the USAF over-computed the cost relating to the KC-767. Accordingly, the USAF tot in comparison it was getting a bigger plane (KC-45) for the same operational life time cost, this was one of the reasons cited by the USAF to justify the selection of the KC-45.
The saga of the Air Force refueling tanker contract is not over by a long shot, though Boeing won a huge victory Wednesday when the Government Accountability Office (GAO) comprehensively backed the company's protest of the initial contract award.
The GAO said it found "a number of significant errors that could have affected the outcome of what was a close competition." It recommended that the Air Force re-run the selection process.
A GAO summary of its ruling outlined seven major mistakes in the Air Force procurement process that detracted from "full and open competition and fairness."
The GAO said the Air Force
• didn't assess the relative merits of the two contending airplanes in accordance with its stated criteria.
• gave Northrop extra credit for exceeding certain performance parameters, when this was expressly not allowed.
• failed to show that the A330 could refuel all of the Air Force aircraft it needs to service.
• misled Boeing about its failure to meet certain performance parameters, while giving fuller information to Northrop.
• dismissed a Northrop failure to agree to an aircraft maintenance plan as only "an adminstrative oversight" when it was a material requirement.
• made unreasonable estimates of the cost of constructing runways, ramps and hangars needed for the larger Airbus jet, which led to the conclusion that Northrop offered lower total program costs — when in fact Boeing's overall cost was lower.
• inappropriately rejected Boeing's estimate of its non-recurring cost to develop the program, using an "unreasonable" model to increase that cost estimate.
http://seattletimes.nwsource.com/html/businesstechnology/2008004116_webboeing18.htmlThe Air Force must formally respond to the GAO recommendations within 60 days.
Looks like its back to square one.
I don't think the AF will ignore the GAO recommendations because ultimately congress controls the funding. Also, this deal has become a big political issue.Perhaps. Funnily enough, USAF doesn't have to agree with this and can plough on ahead anyway...
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"Where the GAO comes from" is whether the process was followed correctly. In this case, it appears not. It looks as if the USAF may have decided which aircraft it wanted, then used the evaluation to justify its decision, not the other way round.I agree that the KC-30 can carry more fuel than the KC-767 and thus measured in such terms can be considered a better aircraft.
I think where the GAO comes from and what I agree is the question of how this applies to the USAF. Questions like: does the USAF need the excess fuel carriage has not been comprehensively answered. That's where the problem lies. As mentioned previously, seen in this light, I think boeing had a case.....