Overview of F-35 test flights

Production milestones, roll-outs, test flights, service introduction and other milestones.
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neptune

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Unread post14 Jan 2010, 03:31

Graham Warwick on ARES Blog reported; 7 Jan 10; Lead STOVL pilot Graham Tomlinson engaged the shaft-driven lift fan at 5,000ft and 210kt, slowed to 180kt, then accelerated back to 210kt and converted back to conventional-flight mode.

The lift system was engaged for 14 minutes of the 48-min flight.

"Everything worked and plane landed with no gripes. GT [Tomlinson] said flying with the fan on is way smoother than flying doors-open with the fan off." :D
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energo

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Unread post15 Jan 2010, 11:57

BF-1 flights 25-30 (PAX ferry, first STOVL engagements, 140 overall flights)

BF-1 flight 25 was a 1.8 hour ferry-confidence mission on Nov. 6 prior to the PAX ferry. Pilot was David "Doc" Nelson.

On Nov. 13, chief test pilot Jon Beesley ferried BF-1 from Fort Worth to Dobbins Air Force Base, Marietta. Weather delayed traveling on to the Patuxent River (PAX) Naval Air Station, Md., on Nov 14 as planned. BF-1 completed the second leg of its ferry, on Nov. 15. The two ferry flights accumulated 2.7 flight hours.

On Dec. 23 BF-1 conducted Flight 28, a 1.1 hour sortie, completing BF-1’s first local flight since its arrival at the naval facility. It included a Military power takeoff, a climb to 15,000 feet for throttle and gear transients, Flying Qualities, open STOVL doors and Upper Lift Fan door opened to 65 degrees for the first time concluding with a straight in approach to a full stop landing.


On Thursday Jan. 7 F-35 Lead STOVL Pilot Graham Tomlinson flew BF-1 flight 29 on its first STOVL transition flight. Tomlinson took off at 1:53 p.m. EST, climbed to 5,000 feet and engaged the shaft-driven LiftFan propulsion system (Mode 4) at 210 knots, then slowed to 180 knots with the system engaged before accelerating to 210 knots and converting back to conventional flight.

The first clutch engagement completed in 14 seconds from command to locked clutch and the STOVL propulsion system was engaged for a total of 14 minutes during the flight. Tomlinson landed at 2:41 p.m. EST and the jet was Code 1.

On Saturday Jan. 9 BF-1's second lift-fan engagement flight slowed the aircraft to 150 knots. Thomlison was very appreciative of the conversion to Mode 4 (lift fan engaged) and back to Mode 1. There was less vibration in Mode 4 than with STOVL doors open in Mode 1.


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Last edited by energo on 26 Jan 2010, 20:03, edited 1 time in total.
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energo

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Unread post26 Jan 2010, 19:58

BF-1 flight 31, BF-2 flight 17 (142 overall flights)

On Saturday January 23 the program completed its first back-to-back flights of BF-1 and BF-2 in close succession at Patuxent River Naval Air Station.

BF-1 flew a 1.2 hour sortie accomplishing its mission objectives of STOVL transitionts down to 150 knots while the 1.4 hour flight by BF-2 included aerial refueling testing with a KC-130 tanker.

The upcomming test flights for BF-1 include STOVL transitions down to 2000 feet and 120 knots while BF-2 testing will focus on aerial refueling data collection.

B. Bolsøy
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Last edited by energo on 02 Feb 2010, 09:35, edited 1 time in total.
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Unread post28 Jan 2010, 01:37

First U.K. Service Pilot Flies The Lockheed Martin F-35

PATUXENT RIVER, Md., January 27th, 2010 -- A Royal Air Force officer on Tuesday became the first active-duty service pilot from the United Kingdom to take to the skies in a Lockheed Martin [NYSE: LMT] F-35 Lightning II, also known as the Joint Strike Fighter (JSF).

RAF Squadron Leader Steve Long piloted BF-2, the second short takeoff/vertical landing (STOVL) F-35B, over Naval Air Station Patuxent River, Md., logging the aircraft's 18th mission. Long departed at 9:55 a.m. EST and flew the aircraft to 20,000 feet, before landing 1.3 hours later. Both the RAF and the Royal Navy plan to operate the F-35B.

http://www.lockheedmartin.com/news/pres ... force.html

Lead F-35B test pilot Graham Tomlinson flew aircraft BF-1 down to 120kt in STOVL mode today, Jan. 27. on the fourth flight from Pax River in which the propulsive-lift system has been engaged.

BF-2, meanwhile, has logged 19 flights, three of them since arriving at Pax on Dec. 29. The aircraft flew twice on Jan. 26, once for 1.3h piloted by RAF active-duty pilot Sgn Ldr Steve Long, and again for 0.9h on an aerial refuelling sortie piloted by Lockheed's Jeff Knowles.

http://www.aviationweek.com/aw/blogs/de ... d=blogDest
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Unread post03 Feb 2010, 09:38

http://startelegram.typepad.com/sky_tal ... flies.html

"Another F-35 flies - BF-3 February 02, 2010
One day after being publicly chastised, if you will, by the secretary of defense for its lack of performance on the F-35 joint strike fighter, Lockheed Martin got its fifth F-35 test airplane in the air Tuesday for the first time.

First flight of the F-35B model (BF-3) short-takeoff and vertical landing jet had been held up for several days by the recent spate of cold, overcast weather.

The jet took off at 4:02 p.m. CST. During the one-hour flight, F-35 Chief Test Pilot Jon Beesley tested the aircraft’s handling, engine functions, landing gear and basic flight systems.

BF-3 joins two other F-35Bs and one F-35A conventional takeoff and landing (CTOL) aircraft currently undergoing active flight testing.

BF-3 was built and instrumented to conduct flight sciences test work and will be used primarily to evaluate vehicle systems and expand the aircraft’s aerodynamic and structural-loads envelope. It will deploy later this year to Naval Air Station Patuxent River, Md., where it will carry and release most of the weapons the F-35B will employ in combat. - Bob Cox"
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Unread post03 Feb 2010, 19:47

STOVL F-35 - Progress Report Posted by Graham Warwick at 2/3/2010

http://www.aviationweek.com/aw/blogs/de ... d=blogDest

"Lockheed Martin flew the third F-35B STOVL test aircraft - BF-3 - on Feb.2. It is the fifth JSF to fly, and F-35 chief test pilot Jon Beesely was at the controls for the hour-long flight from Fort Worth.

F-35 program general manager Dan Crowley says BF-3 should ferry to Pax River this month to join BF-1 and BF-2. The fourth F-35B - BF-4, the first JSF mission-system test aircraft - is on the flight line at Fort Worth.

BF-4 has been loaded with the first block of mission-system software - Block 0.5 - which has been turned on several times on the ground without any problems, says Crowley, adding: "We've had no problems with software stability."

At Pax, Crowley says, BF-1 has seven flights to go to the first vertical landing (engine supplier Pratt & Whitney says six, but may not be counting the actual VL flight). He expects the long-awaited feat to be accomplished in "mid- to late February".

After four flights in powered-lift STOVL "Mode 4", with the lift system engaged, BF-1 has flown down to 3,000ft and 120kt, which puts the aircraft into the "semi-jetborne" flight regime, says Crowley, where propulsion and flight control is integrated."
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LMAggie

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Unread post10 Feb 2010, 03:40

BF-3 flew for the third time today. Very robust jet.
“Its not the critic who counts..The credit belongs to the man who does actually strive to do the deeds..”
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seruriermarshal

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Unread post10 Feb 2010, 05:10

thanks LMAggie , any news about BF-3 flew second .
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Unread post10 Feb 2010, 06:57

LMAggie wrote:BF-3 flew for the third time today. Very robust jet.


Loud, too. I'm about 10 miles ATCF and it is noticeably louder than anything else. But it's a good sound.
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Unread post10 Feb 2010, 07:00

F-35 = "Sound of Freedom" :)
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Unread post10 Feb 2010, 07:27

Great news on BF-3. That's exactly what people like me are looking for. At least those of us who want to see the F-35 succeed. Notice, LMAggie, I am not among those buffoons who think that the F-35 will be anything less than an exceptional aircraft once and if its development is successfully completed.
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Unread post10 Feb 2010, 17:43

For the record - it is tiresome to hear the presentation of any flight-test accomplishment, no matter what, as a refutation of the trolls, naysayers, skeptics, deniers, conspiracists, Communists, Albigensian heretics, bourgeois revisionists and Freemasons (have I missed anyone?) conspiring to bring the program down.

The trolls. naysayers &c have predicted (more accurately than the program's leaders) that it will be late and will cost more than expected (they have been right about this too - Nunn-McCurdy is a few weeks away).

They point out that the jet was mainly designed for bombing missions and that the rest of the world appears to have a different idea of what a fighter should look like - which are also irrefutable facts - and that there is a valid debate on how well a four-AAM, moderately agile stealth jet will do against a faster, more heavily armed adversary.

But none of the trolls &c has ever said the jet won't fly.

Just putting this stuff on the record, hopefully to pre-empt the whoops of erotic fulfillment from the fans when VL takes place.
I'm a troll/fol-de-rol/And I'll eat you for my supper
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Unread post10 Feb 2010, 18:45

underhill wrote:as a refutation of the trolls, naysayers, skeptics, deniers


Don't forget "buffoons"......i think that's what triggered your latest diatribe.
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Unread post10 Feb 2010, 21:31

I forgot the Trilateral Commission, too.
I'm a troll/fol-de-rol/And I'll eat you for my supper
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energo

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Unread post10 Feb 2010, 21:32

Gentlemen, please reserve this thread for posts about the flight tests. Thank's! :salute:

B. Bolsøy
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