F-15 (изтребителни и ударни варианти)

Всичко за военната военната авиация по света
Потребителски аватар
Грозев
[Site Admin]
Мнения: 10218
Регистриран: пет окт 05, 2007 8:18 pm
Местоположение: София

F-15 (изтребителни и ударни варианти)

Непрочетено мнение от Грозев » вт ное 06, 2007 8:18 pm

Air Force grounds F-15s in Afghanistan after Missouri crash
From Mike Mount
CNN

WASHINGTON (CNN) -- A mandatory grounding of Air Force F-15s has been expanded to cover those flying combat missions over Afghanistan after a crash in Missouri last week, Air Force officials said Monday.
The Air Force grounded models of its F-15 fleet after the crash of an older model F-15C Friday.

The F-15Es in Afghanistan can fly only in emergency situations to protect U.S. and coalition troops in a battle, according to Maj. John Elolf, a spokesman for the U.S. Air Force Central Command.
Maj. Cristin Marposon, an Air Force spokeswoman, told The Associated Press the country's fleet of 676 F-15s, including mission critical jets, was grounded on November 3 for "airworthiness concerns" after the crash of an older model F-15C on Friday.
The cause of the crash is still under investigation, but Air Force officials said it was a structural failure and the plane broke apart in flight.
A spokeswoman for Boeing, the aircraft's manufacturer, told AP the company was cooperating with the Air Force but could not provide additional comment because of the pending investigation.
Col. Robert Leeker, commander of the 131st Fighter Wing, said Friday the plane had been among four planes split into pairs and were engaging in one-on-one training flights in which speeds of 400 to 450 mph are typical, according to AP.
A pilot, a 10-year veteran of the guard whose name and rank were not released, safely ejected from the aircraft when it crashed in Dent County, Missouri, AP reported. The pilot suffered a dislocated shoulder, a broken arm and minor cuts and bruises.
Now only "mission critical" F-15s will fly.
Pentagon officials said the U.S. Navy has had to move the only aircraft carrier in the region from the Persian Gulf to the North Arabian Sea to fill mission gaps for the F-15s.
Several dozen F/A-18 fighters from the aircraft carrier USS Enterprise will fly missions with other Air Force aircraft to fill mission gaps.
The F-15E Strike Eagle is an air-to-ground and air-to-air fighter, making it more versatile than other F-15 models, which are used for only air-to-air missions.
The Strike Eagle is used in Afghanistan in its air to ground role, dropping bombs on targets with its advanced sensors.
"The U.S. Air Force maintains assigned F-15E Strike Eagles on ground alert and will accomplish all assigned missions with a variety of fighter, attack and bomber aircraft, and unmanned aerial vehicles, under my command and control during this period," Lt. Gen. Gary L. North, commander of the U.S. Central Command's Combined Forces Air Component, said in a statement Monday.
The single-seat F-15C is one of the older models in the Air Force's fleet of 700 F-15s which entered service in 1979.
The Air Force's top aircraft, the stealthy F-22 Raptor, is newly operational for the air service and has not yet been deployed in combat.
The expensive F-22 will eventually be the main fighter jet for the Air Force, but budgetary restrictions on the plane have forced the Air Force to cut the number of planes it will have in the fleet

http://edition.cnn.com/2007/US/11/05/f1 ... index.html

Moss
Мнения: 1328
Регистриран: пон окт 08, 2007 5:24 pm

Непрочетено мнение от Moss » вт ное 06, 2007 9:48 pm

Това с F-15 е интересна авария. Тоя самолет сигурно e поне 25 годишен, но да се разспадне самолет във въздуха( и то F-15!) - не се случва всеки ден.

борден
Мнения: 1422
Регистриран: съб окт 06, 2007 10:26 pm
Местоположение: София

Непрочетено мнение от борден » ср ное 07, 2007 9:54 am

По-интересно е на колко летателни часа се е случило това!
Принципно за структурните "проблеми" (като пукнатини по носещи елементи на конструкцията) от много по-голямо значение е наработката на самолета (летателни часа, кацания, маневриране с големи претоварвания). Възсрастта в години е свързана по-скоро с възникването на корозия (което пък никак не се връзва с откритата корозия на F-22 на по една-две години).

Друг е въпроса, че за американските ВВС (и Национална гвардия) наработката на самолета е в пряка зависимост от "възрастта" на самолета, което в никой случай не може да се каже за българските ВВС, където може да се срещнат 17-18 годишни самолети налетели по 200-300 часа... :cry:

Потребителски аватар
Грозев
[Site Admin]
Мнения: 10218
Регистриран: пет окт 05, 2007 8:18 pm
Местоположение: София

Непрочетено мнение от Грозев » ср ное 07, 2007 8:28 pm

Oще по въпроса.
Самолета е бил на 27 години :shock: , но това е май нормално за ВВС на САЩ.
Плюс това, че машините там се експлоатират до дупка и като чужди жени. Никаква жалост за тях.
Както казва един приятел, ако един американски F-15 го дадат на нашите славни ВВС във вида в който е сега ще го бракуват на третата минута.

Mission Continues During Grounding of F-15s
(Source: US Air Force; issued Nov. 6, 2007)

WASHINGTON --- Lt. Gen. Gary L. North, U.S. Central Command's Combined Forces Air Component commander is maintaining assigned F-15E Strike Eagles on ground alert and will accomplish all assigned missions with a variety of fighter, attack and bomber aircraft, and unmanned aerial vehicles, under his command and control during this period.

"We will continue to maintain the 24/7 Air Tasking Order profile that allows me, as the CFACC, to synchronize and integrate air and space assets into the International Security Assistance Force and Combined Joint Task Force - 82 operational scheme of maneuver," he said. "This is our continual task: to have airpower overhead; persistent intelligence, surveillance and reconnaissance; close precision strike capability; and air refueling, airlift, airdrop and aerial medical evacuation when needed."

The grounding of the F-15 fleet is a strong message that the U.S. Air Force takes the safety of its aircrews flying in harm's way very seriously, General North said.

"I worry about the health of our aging fleet and how sometimes it is not well understood by those our Airmen protect," said the general. "The investigation will get to the cause of the accident. In the meantime, we'll continue to provide air supremacy for the Afghan National Army and the collective NATO, coalition and U.S. forces on the ground."

The Air Force grounded its F-15 fleet on Nov. 3 following the crash of a Missouri Air National Guard F-15C Eagle Nov. 2. F-15s assigned North American Aerospace Defense Command and U.S. Central Command Air Forces will be on ground alert and fly missions if required.

The cause of that accident is still under investigation; however, preliminary findings indicate that a possible structural failure of the aircraft may have occurred. The grounding of aircraft is a precautionary measure.


The Air Force will ensure mission requirements are met for worldwide operations normally accomplished by the F-15. Current F-15 flying locations include bases in the continental United States, Alaska, England, Hawaii, Japan and the Middle East.

There are approximately 670 F-15s in the Air Force inventory including F-15 Eagles and F-15E Strike Eagles. The F-15 reached initial operational capability for the Air Force in September 1975. The Missouri Air National Guard F-15C that crashed was built in 1980.

While the F-15 continues to prove highly effective in the ongoing operations in Iraq and Afghanistan, the Air Force is on a course to eventually replace the aging fleet with the stealthy F-22 Raptor.

The F-15 Eagle is an all-weather, extremely maneuverable, tactical fighter designed to permit the Air Force to gain and maintain air supremacy over the battlefield.

The F-15C, D and E models were deployed to the Persian Gulf in 1991 in support of Operation Desert Storm where they proved their superior combat capability. F-15C fighters accounted for 34 of the 37 Air Force air-to-air victories. The F-15Es were operated mainly at night, hunting SCUD missile launchers and artillery sites using the LANTIRN system.

They have since been deployed for air expeditionary force deployments and operations Southern Watch, the no-fly zone in Southern Iraq; Provide Comfort in Turkey; Allied Force in Bosnia; Enduring Freedom in Afghanistan; and Iraqi Freedom in Iraq.

Потребителски аватар
Грозев
[Site Admin]
Мнения: 10218
Регистриран: пет окт 05, 2007 8:18 pm
Местоположение: София

Непрочетено мнение от Грозев » чет ное 08, 2007 9:22 pm

Това граундване на F-15 се разпространява като епидемия...

Israel and Japan join US in grounding F-15s
By Graham Warwick

Israel and Japan have followed the US Air Force in suspending flights of their Boeing F-15 Eagles after the 2 November crash in Missouri caused by suspected structural failure.

USAF accident investigators arrived at the crash site on 5 November. The Missouri Air National Guard F-15C crashed while engaged in air combat training with three other Eagles. The pilot ejected safely.

A video report by local television station KY3 shows the crash site. Wreckage of the aircraft from mid-fuselage aft is visible, including the wing. The forward fuselage is not discernable.

The aircraft also appears to be missing its left vertical stabiliser, although it may have detached in the crash. The right vertical stabiliser is still attached, as are the horizontal stabilisers.

A USAF F-15 crashed in the Gulf of Mexico in 2002 when it broke up after the leading edge of its left vertical stabiliser detached in a high-speed dive to Mach 1.97. The pilot was killed.

The USAF says it began replacing the leading edge and upper aft portion of the vertical stabilisers during depot overhaul and has so far completed 463 of its 664 aircraft. The F-15 involved in the Missouri accident had its vertical stabilisers repaired in August 2003, the service says.

The USAF has suspended non-combat flights by its F-15s based around the world, and says it informed other Eagle operators of the suspected structural failure. Israel has confirmed to Flight that it has grounded its 70 aircraft, a mix of F-15A/B/C/Ds and F-15Is. Japan has also suspended flights of its 200 F-15J/DJs.

F-15s are also operated by Saudi Arabia and South Korea, and Singapore has aircraft on order.

http://www.flightglobal.com/articles/20 ... f-15s.html

А това е видеото за което се говори (имайте търпение с рекламите):
:arrow: http://www.ky3.com/news/local/10974506. ... eo=YHI&t=a

Moss
Мнения: 1328
Регистриран: пон окт 08, 2007 5:24 pm

Непрочетено мнение от Moss » чет ное 08, 2007 10:39 pm

Самолет произведен 1980 сигурно е налетял 6-7000 часа. От видеото се вижда, че самолета е паднал цял, само десния вертикален стабилизатор го няма. Струва ми се, самолета би трябвало да може да лети и без него. Ама явно не може много ...

Потребителски аватар
reaper
Мнения: 242
Регистриран: чет окт 04, 2007 10:55 am
Местоположение: Bulgaria
Контакти:

Непрочетено мнение от reaper » пет ное 09, 2007 8:24 am

В горното интервю дядката обясни, че е чул самолетите да преминавата, след което се е чул някакъв "странен шум" и е последвал взрива. Възможно ли е липсата на вертикалния стабилизатор да е поради някаква авария на двигателя?
Добре поне, че пилота е оцелял.
if your gonna be dumb you gotta be tough

King_Rat
Мнения: 300
Регистриран: съб окт 06, 2007 9:29 pm
Местоположение: Пазарджик
Контакти:

Непрочетено мнение от King_Rat » пет ное 09, 2007 6:12 pm

По-вероятно е да се е откъснал поради умора на материала, тъй като киловете са подложени на постоянно знакопременливо натоварване. Самолетът явно е изпаднал в свредел, защото няма просека в гората, т.е. падал е вертикално.

Потребителски аватар
Грозев
[Site Admin]
Мнения: 10218
Регистриран: пет окт 05, 2007 8:18 pm
Местоположение: София

Непрочетено мнение от Грозев » съб ное 10, 2007 4:10 pm

Струва ми се, че цялата предна част (някъде от въздухозаборниците напред) липсва.
Или да се е откъснала в полет, или там да е бил най-сериозния удар, или тази част да е изгоряла.
Кадрите са лоши, не може да се съди много по тях.

Потребителски аватар
reaper
Мнения: 242
Регистриран: чет окт 04, 2007 10:55 am
Местоположение: Bulgaria
Контакти:

Непрочетено мнение от reaper » съб ное 10, 2007 4:30 pm

Удар от птица?
if your gonna be dumb you gotta be tough

King_Rat
Мнения: 300
Регистриран: съб окт 06, 2007 9:29 pm
Местоположение: Пазарджик
Контакти:

Непрочетено мнение от King_Rat » съб ное 10, 2007 6:11 pm

Носовата част не е толкова "силова" като центроплана. Виж снимките на свалените в Босна МиГ-29 - там положението е същото.

Птицата едва ли ще нанесе такива щети. Освен да е някой ниско прелитащ щраус :lol:

Потребителски аватар
Грозев
[Site Admin]
Мнения: 10218
Регистриран: пет окт 05, 2007 8:18 pm
Местоположение: София

Непрочетено мнение от Грозев » пет ное 16, 2007 4:48 pm

Почват да вдигат летателната забрана за F-15:

Air Force lets some F-15s go back in the air
By Bryan Mitchell, Stars and Stripes
Mideast edition, Thursday, November 15, 2007

RAF LAKENHEATH, England — The Air Force rescinded a grounding order on some of its F-15s Wednesday, sending a fighter jet squadron in Afghanistan back on combat sorties and squadrons in the United Kingdom back onto their training regimen.

The F-15Es can return to flight after a one-time 13-hour inspection, according to Air Force spokeswoman Jennifer Bentley. All other models remain grounded.

“Some of our planes are flying here,” said 455th Air Expeditionary Wing spokesman Capt. Michael Meridith from Bagram Air Base, Afghanistan.

The latest grounding was ordered last week after the Nov. 2 crash of an F-15C from the Missouri Air National Guard. The crash was the second involving a Missouri Air National Guard F-15 this year.

The pilot was engaged in a dog fighting exercise at speeds of up to 500 mph when the accident occurred. He ejected safely and suffered minor injuries.

The order grounded the aging fleet of more than 700 F-15s across the United States and at Lakenheath, where the 48th Fighter Wing is based. The wing has the only contingent of F-15s in U.S. Air Forces Europe.

It’s unclear if the Air Force determined what caused the crash, but officials have acknowledged the plane suffered structural problems and broke apart in flight.

“They can’t give us anything partial from the investigation,” Bentley said.

RAF Lakenheath is home to three F-15 squadrons, which includes approximately 83 F-15s that fly an average of 60 sorties a day.

During the grounding, pilots and weapons systems officers at the 48th Fighter Wing focused on studying and preparing for the ongoing NATO Operations evaluation while the maintenance crews attempted to work ahead on scheduled overhauls, RAF Lakenheath officials said last week.

The first F-15 rolled off the McDonnell Douglas production line and launched into the skies in 1972. Upgrades and modifications have significantly altered the aircraft.

The F-15 is one of the primary aircraft used by the Air Force in Afghanistan to provide close-air support to coalition troops serving across the Texas-sized nation.

The Lakenheath-based 492nd Fighter Squadron recently returned from a four-month tour of Bagram Air Base, in which it engaged in nearly daily combat sorties and employed roughly 1,000 munitions.

Saudi Arabia, Japan and Israel also maintain individual fleets of F-15s.

The move to lift the order ended the longest grounding for the F-15 since 1983, when a defective component found on a fighter jet at Langley Air Force Base, Va., led to a similar long-term grounding, according to the Air Force.

The Air Force bought its last F-15 in 2004 and has long-term plans to eventually replace the fighter jet with the F-22, which has yet to be deployed on combat missions.

http://www.estripes.com/article.asp?sec ... icle=50278

Потребителски аватар
Грозев
[Site Admin]
Мнения: 10218
Регистриран: пет окт 05, 2007 8:18 pm
Местоположение: София

Непрочетено мнение от Грозев » съб ное 24, 2007 12:30 am

Край на забраната за полети с F-15.
Все още не е ясна точната причина за аварията от 2 ноември, но интересен е фатка, че са съсредоточават огледите на изтребителите F-15 в района на пилотската кабина и около въздухозаборниците. Тоест ония предположения, че предната част на падналия F-15 я няма може да се окажат верни...

Entire F-15 fleet returning to flight -- ACC commander sends message to F-15 community
by Air Combat Command Public Affairs

11/21/2007 - LANGLEY AIR FORCE BASE, Va. (ACCNS) -- Gen. John D.W. Corley, commander, Air Combat Command, sent a message today to F-15 pilots, weapons systems officers, and maintenance professionals, outlining the actions the Air Force has taken following the Nov. 2 F-15C mishap that resulted in the loss of the aircraft.

The message reads:

(Quote) Airmen

On 2 November, the Air Force experienced an F-15C mishap resulting in the loss of the aircraft. The circumstances of the mishap indicated catastrophic structural failure. On 3 November, the Air Force grounded its F-15 fleet. This decision was not made lightly. It was the right thing to do based upon the nature of this mishap.

Grounding a fleet of nearly 700 front-line aircraft has significant operational impact. Total Force, joint and coalition partners were able to mitigate that impact.

The cause of the mishap remains under investigation. Air Force maintenance and operations professionals and industry experts are working with the Accident Investigation Board to examine all aspects of the mishap. At the same time, structural engineers have conducted in-depth technical reviews of data from multiple sources. We continue to proceed in an inclusive and transparent fashion to derive, as best as humanly possible, the cause of the mishap.

We evaluated the grounded fleet. First, we focused on the F-15Es. They are the newest F-15s and have been exposed to less stress. They are structurally different than the A-D models. Problems identified during years of A-D model usage were designed "out" of the E-model. Given these differences, and after consultation with Warner Robins ALC and the AIB, we returned the F-15E fleet to flying status following successful inspections.

Next, we concentrated on the remainder of the grounded fleet. The AIB is now focused on the area just aft of the cockpit and slightly forward of the inlets. Warner Robins ALC mandated a thorough inspection and repair of all structural components in this area. I have directed each F-15 aircraft be inspected and cleared before returning to operational status. Today, ACC issued an FCIF and Warner Robins ALC issued an Operational Supplemental Tech Order to further direct and guide your pre-flight and post-flight actions.

The F-15 is a formidable war fighting aircraft and workhorse for our Air Force. I applaud each and every Eagle pilot, WSO and maintainer for the meticulous and disciplined way you approached this challenge. Mission accomplishment entails risk. Together, we must remain vigilant and focused on Operational Risk Management to mitigate this risk. Airmen speak up when they see something wrong. I rely on you to ensure all operations and maintenance parameters are in order before flight. The F-15 community can take great pride in the fact that you have met this challenge. We must deliver air power on time, on target given our overriding duty to defend our Country. (End Quote)


There are nearly 700 F-15s in the Air Force inventory. As of today, 219 of the 224 E-models and 294 of the 442 A-D models in the inventory have been inspected and cleared for flight.

In releasing the F-15 fleet to fly, General Corley said the Air Force was accepting a degree of risk: "We accept this risk because of our overriding duty to provide unrivaled combat air power for the defense of our Country."

http://www.acc.af.mil/news/story.asp?id=123076913
Anyone who fights for the future, lives in it today

Потребителски аватар
Грозев
[Site Admin]
Мнения: 10218
Регистриран: пет окт 05, 2007 8:18 pm
Местоположение: София

Непрочетено мнение от Грозев » чет ное 29, 2007 12:37 pm

Пак забрана за полети с американските изтребители F-15. Всички самолети трябва да преминат през задълбочена инспекция... Открити са пукнатини и в други изтребители.

F-15 A-D models ordered to stand down for additional inspections

11/28/2007 - LANGLEY AIR FORCE BASE, Va (AFPN) -- For the second time this month, the commander of Air Combat Command has directed a fleet-wide inspection of all ACC F-15 A through D model aircraft.

The directive follows Nov. 27 findings stemming from the investigation of an F-15C mishap that resulted in the loss of that aircraft on Nov. 2 . Based on those new findings, all F-15 A through D models will undergo a stand down that will require additional inspections and possible repair actions.

Gen. John D.W. Corley, ACC commander, also recommended the stand-down of all other similar model aircraft in other Air Force major commands, including those under the operational control of U.S. combatant commanders.

The new findings from the Accident Investigation Board indicate possible fleet-wide airworthiness problems with F-15A/B/C and D aircraft. These findings, based on a metallurgical analysis of the mishap aircraft, have drawn attention to the F-15's upper longerons near the canopy of the aircraft that appear to have cracked and failed. The longerons are major structural components that run along the length and side of the aircraft.

Although the longeron area was covered in general by previous inspections as a result of the Nov. 2 mishap, technical experts with the Warner Robins Air Logistics Center in Georgia, are recommending a specific inspection technique for the suspect area based on the yesterday's findings.

Manufacturer simulations have indicated a catastrophic failure could result in this particular area. In addition, cracks were discovered along the same longeron area during two recent inspections of F-15C aircraft. These aircraft were immediately grounded based upon the inspection findings and are awaiting further engineering instructions.

Based on this most recent data, ACC believes it is necessary to stand-down the F-15 A through D aircraft until such time each aircraft can receive a more detailed and tailored inspection of the upper longerons in the focus area.

Air Combat Command continues to work with the Air National Guard, the Air Force Reserve and sister major commands in Europe and the Pacific, as well as joint and coalition partners, to ensure mission coverage.

The stand-down does not affect the F-15E. The duration of the stand-down is pending the completion of required inspections and any necessary repair actions.


http://www.af.mil/news/story.asp?id=123077347
Anyone who fights for the future, lives in it today

Потребителски аватар
Грозев
[Site Admin]
Мнения: 10218
Регистриран: пет окт 05, 2007 8:18 pm
Местоположение: София

Непрочетено мнение от Грозев » ср дек 05, 2007 11:29 pm

Кризата продължава.
Намерени са още изтребители с пукнатини в надлъжниците и по-всичко личи забраната за полети ще продължи и след приключването на настоящата инспекция, поне до намирането на надеждно решение на проблема.
Усещам как идва звестният час на F-22...

USAF F-15s remain grounded as more cracks found
By Graham Warwick

US Air Force Boeing F-15A-Ds are to remain grounded, even after structural inspections are completed, until investigation of the November crash is complete and a solution to fuselage longeron cracking is developed.

The F-15s had been returning to flight after undergoing inspections, called time compliance technical orders (TCTO), but on 3 December the head of USAF Air Combat Command, Gen John Corley, ordered the aircraft to remain grounded.

ACC says the decision followed a briefing on the investigation into the 2 November crash of a Missouri Air National Guard F-15C following structural failure, in which investigators reported they had found additional longeron cracking in the mishap aircraft.

Since ordering inspection of all F-15A-Ds, the USAF has found longeron cracks in two aircraft operated by the Oregon Air National Guard. Both were built in the early 1980s, and are about the same age as the Missouri mishap aircraft, says ACC.

Additional TCTOs were ordered on 29 November and so far more than 195 of the USAF’s 445 F-15A-Ds have undergone these inspections, says the command. “The TCTOs are still out there, and aircraft will still undergo inspection, but even if they pass they will not fly,” says ACC.

The command does not know whether the solution to the cracking problem will be “a repair, more TCTOs or what, and we are not putting a date to it.”

Grounding of the F-15s continues to be used by US Air Force leadership to underline its need for additional funding to continue procurement of the Lockheed Martin F-22A beyond the planned 183 aircraft.


http://www.flightglobal.com/articles/20 ... found.html


И още по темата:
:arrow: U.S. Air Force F-15s grounded again
Anyone who fights for the future, lives in it today

Потребителски аватар
Грозев
[Site Admin]
Мнения: 10218
Регистриран: пет окт 05, 2007 8:18 pm
Местоположение: София

Re: F-15 (изтребителни варианти)

Непрочетено мнение от Грозев » пон дек 17, 2007 7:17 pm

Проблемите с изтребителите F-15 започват да оказват влияние и върху подготовката на американските бойни пилоти. След близо шест седмици забрана за полети повечето изтребителни пилоти са на границата на прекъсване на подготовката си.
Интересно няма ли вариант да прехвърлят F-15E в изтребителните части и на него да крепят ситуацията.

ACC general tells F-15 pilots to stay sharp
By Bruce Rolfsen - Staff writer
Posted : Monday Dec 17, 2007 7:13:56 EST

Six weeks after an F-15C Eagle broke apart while on a training flight, the Air Combat Command boss is asking pilots to be patient and do what they can to stay sharp.

The Air Force’s F-15 Eagles remain grounded as investigators focus on metal fatigue issues in the front of the jet.

“While I know that a number of you will lose currencies and the ability to maintain the proficiency that the world has come to expect,” wrote Gen. John Corley, himself an F-15 pilot, “I ask that you don't lose your focus.

“Trust that your leadership is keeping a watchful eye and will be poised to execute a plan that will put all of you back in the air as fast as safely possible.”

The prolonged grounding is impacting the training of F-15 pilots who are expected to fly between nine and a dozen times each month. The grounding does not include F-15E Strike Eagles, a two-seat bomber version of the fighter.

The most immediate qualification that pilots stand to lose is the most basic — landing.

An inexperienced F-15 pilot — a flier with less than 500 hours in the jet — is expected to fly and land an F-15 at least once every 30 days to remain qualified, an ACC spokesman said. An experienced pilot is expected to fly a minimum of once every 45 days.


While many F-15 pilots were able to log flights during the few days the jets weren’t grounded since the Nov. 3 crash, the 30-day limit approaching fast for all the new pilots.

If a pilot loses his landing qualification, he can still fly the F-15, but he’ll have to make that initial return-to-flight landing with an instructor pilot flying close by, the spokesman said. Wing leaders also have latitude to grant some waivers.

Pilots are also losing that sharp sense of what it’s like to be in fighter cockpit dealing with high-Gs, a cramped cockpit, weather, listening to the radio and keeping a watch for other aircraft. Fighter pilots who don’t fly for as little as two weeks are often expected to fly a basic sortie as their first flight back in the cockpit.

While active-duty F-15s bases are equipped with high-fidelity simulators, the simulators can’t recreate the physical stresses of piloting a high-performance jet. During day-to-day training, the simulators are used for rehearsing missions and practicing emergency and other procedures.

So far, no additional jets have been found with cracks in the suspect longerons that reinforce the front of the jet and support the canopy structure. Inspections of the F-15s turned up eight F-15 with cracked longerons, including the Missouri Air National Guard F-15 that crashed Nov. 3

Two of the jets were assigned to the 18th Wing, Kadena Air Base, Japan; one to the 325th Fighter Wing, Tyndall Air Force Base, Fla.; and four to the Oregon Air National Guard’s 173rd Fighter Wing at Kingsley Field.

The Florida and Oregon units are training wings while Kadena is an operational unit.


http://www.airforcetimes.com/news/2007/ ... ed_071215/
Anyone who fights for the future, lives in it today

Потребителски аватар
Грозев
[Site Admin]
Мнения: 10218
Регистриран: пет окт 05, 2007 8:18 pm
Местоположение: София

Re: F-15 (изтребителни варианти)

Непрочетено мнение от Грозев » чет яну 10, 2008 11:39 pm

Кризата в изтребителната авиация на САЩ е май наприключване.
Вчера са разрешили полети с около 60% от изтребителите F-15 за които е преценено, че са най-сигурни за полети. Това са машини преминали през няколко инспекции и при които не са открити признаци за пукнатини в надлужниците.

Air Combat Command Clears Selected F-15s for Flight
(Source: US Air Force; issued Jan. 9, 2008)

LANGLEY AIR FORCE BASE, Va. --- Air Combat Command officials cleared a portion of the F-15 Eagle A through D model aircraft Jan. 9 for flying status and recommended a limited return to flight for Air Force units worldwide following engineering risk assessments and data received from multiple fleet-wide inspections.

The return to fly order and recommendation applies only to those F-15 aircraft, about 60 percent of the total Air Force F-15 A through D fleet, that have cleared all inspections and have met longeron manufacturing specifications.

The order and recommendation follows more than two months of stand-down actions after an Air National Guard F-15C aircraft experienced catastrophic structural failure and broke apart in flight during a basic fighter maneuver training sortie in Missouri Nov. 2.

"The priority in resuming operations for a portion of the F-15 fleet is the defense of our nation -- America deserves nothing less," said Gen. John D.W. Corley, the Air Combat Command commander. "Aircraft inspection results and counsel from both military and industry experts have made me confident in the safety of a portion of the fleet. As a result, I have cleared those F-15s to return to fly."

Today's decision follows detailed information briefed on Jan. 4 to Air Combat Command from the Air Force's F-15 systems program manager, senior engineers from Boeing and the Warner Robins Air Logistics Center, as well as a briefing received today from the Accident Investigation Board president.

The information included an analysis of the health of the Air Force's F-15 fleet from findings from the Nov. 2 mishap investigation, maintenance inspections and actions completed and taken to date as well as historical science and engineering trend data from F-15 fleet management.

Inspections are more than 90 percent complete. Remaining inspections have primarily focused on the forward longerons. The longerons are a critical support structure.

Time compliance technical order inspections have discovered nine other aircraft with longeron fatigue-cracks. Additionally, approximately 40 percent of inspected aircraft have at least one longeron that does not meet blueprint specifications.

Deviations in these longerons will be analyzed at the WR-ALC. The analysis is expected to take approximately four weeks to complete. Once the analysis is complete, ACC will be able to better determine which aircraft will need further inspection, or repair, before returning them to flight.
Anyone who fights for the future, lives in it today

King_Rat
Мнения: 300
Регистриран: съб окт 06, 2007 9:29 pm
Местоположение: Пазарджик
Контакти:

Re: F-15 (изтребителни варианти)

Непрочетено мнение от King_Rat » пет яну 11, 2008 11:13 am

Не бих казал, че е край на кризата. По-скоро уточняване на размера и. 40% от самолетите са спрени от полети, 60% са допуснати, но с ограничения...

Зле е работата.

Потребителски аватар
Грозев
[Site Admin]
Мнения: 10218
Регистриран: пет окт 05, 2007 8:18 pm
Местоположение: София

Re: F-15 (изтребителни варианти)

Непрочетено мнение от Грозев » нед яну 13, 2008 7:48 pm

Първо излязал е доклада на ВВС за аварията от 2 ноември 2007 г. Интересно четиво е. Пълния доклад може да намерите на този адрес - http://www.acc.af.mil/aibreports/
После от пресрелийза по-долу може да се разбере, че върнатите около 260 изтребителя F-15 ще летят без ограничения. По останалите самолети има забележки относно техническото им състояние и е възможно част от тях да не полетят повече.

Air Force Leaders Discuss F-15 Accident, Future
(Source: US Air Force; issued Jan. 10, 2008)

Изображение
While 260 US Air Force F-15A to –D fighters have returned to flight, over 40% of the fleet have faulty parts and may not fly again. (US Air Force photo)

WASHINGTON --- Senior Air Force leaders gathered for a press conference here Jan. 10 to share findings from the accident investigation board currently examining the Nov. 2 crash of a Missouri Air National Guard F-15C Eagle.

The upper right longeron -- one of four metal beams that help hold the cockpit to the main fuselage -- was found to have manufacturing defects, said Col. William Wignall, the head of the accident investigation.

The one longeron, already not up to design specifications, cracked apart under the stress of a 7G turn, the colonel said. This led to the other longerons failing as well, which then caused the cockpit to separate from the rest of the fuselage. The pilot was able to eject, but suffered a broken arm when the canopy snapped off.

The incident led to the grounding of the Air Force's F-15 fleet. As of Jan. 9, the Air Force approved 60 percent of F-15 A through D models to return to service with no flight restrictions.

"We've had great involvement from Boeing during the investigation," Colonel Wignall said. "In fact, they're the ones who determined the longeron was the problem. This was then confirmed by the Air Force Research Laboratory."

During the fleet's grounding, every F-15 base conducted a series of detailed inspections. During that timeframe, nine other F-15s have been found to have similar cracks in their longerons.

The difficulty is that issues have been found with F-15s built between 1978 and 1985, across A through D models at several bases, so no one source of the problem can be isolated, said Gen. John D.W. Corley, the commander of Air Combat Command.

"This isn't just about one pilot in one aircraft with one bad part," General Corley said. "I have a fleet that is 100 percent fatigued, and 40 percent of that has bad parts. The long-term future of the F-15 is in question."

In the meantime, F-22 Raptor, F-16 Fighting Falcon and F-15E Strike Eagle pilots have picked up the F-15s usual mission of patrolling and defending American airspace and interests.

That has had a ripple effect among those pilots' missions, General Corley said. "We don't have a full and healthy fleet, so we've gotten behind on training missions, instructor certifications, classes and exercises," he said. "And in the meantime, our pilots have to be ready to deploy."

For some of the nine F-15s that have longeron cracks, it may be cost-prohibited to repair them, General Corley said. The Air Force is scheduled to retire some of these aircraft in the next fiscal year.

"We're going over each and every aircraft to make a determination," he said. "We will take some F-15s out of the inventory. It just doesn't make sense to spend the time and money if it won't be worth it for some aircraft."

The Air Force first began flying the F-15 in 1972 and has 665 F-15s and F-15Es in its inventory. Its replacement, the fifth generation F-22, is currently in production with active squadrons at Langley Air Force Base, Va., and Elmendorf AFB, Alaska. (ends)
Anyone who fights for the future, lives in it today

Кало
Мнения: 2165
Регистриран: пон окт 08, 2007 11:20 pm
Местоположение: София

Re: F-15 (изтребителни варианти)

Непрочетено мнение от Кало » ср яну 16, 2008 10:25 am

ИМХО, криза реално няма. Има здрав път за лобиране за нови Ф-22.

Отговори