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Patches and Stickers for sale here

File 146955149770.jpg - (308.66KB , 894x1600 , ss Udvar 000.jpg )
21058 No. 21058 ID: 9dcda2

> The Steven F. Udvar-Hazy Center, also called the Udvar-Hazy Center, is the Smithsonian National Air and Space Museum's annex at Washington Dulles International Airport in the Chantilly area of Fairfax County, Virginia, United States

I checked out the Udvar-Hazy Center. Pretty damn cool. I got a little emotional around the Space Shuttle Discovery. I wasn't trying to document the whole museum, I just snapped some pictures of cool stuff. (With a specific interest in engines.)
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>> No. 21128 ID: 9dcda2
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>> No. 21129 ID: 9dcda2
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>> No. 21134 ID: 9dcda2
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>> No. 21139 ID: 9dcda2
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>> No. 21140 ID: 9dcda2
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>> No. 21144 ID: 699348
I've never seen the power plant(s?) next to the aircraft before.
What the fuck.
That thing is absurd.
>> No. 21145 ID: 30f399
File 146965444046.jpg - (1.67MB , 1365x2048 , US F-35B STOVL Rolls-Royce lift system 1.jpg )
US F-35B short takeoff vertical landing (STOVL) variant of the Joint Strike Fighter. Her Pratt & Whitney F135 engine with the STOL lift fan, roll posts and rear vectoring nozzle is very complicated and the developers are still working the problems out. Threats of cancelling the F-35B jump-jet abound.
>> No. 21146 ID: 30f399
File 146965451317.jpg - (1.61MB , 2048x1365 , US F-35B STOVL Rolls-Royce lift system 2.jpg )
>> No. 21147 ID: 30f399
File 146965461334.jpg - (1.42MB , 2048x1362 , US F-35B STOVL Rolls-Royce lift system 3.jpg )
The rear jet nozzle twists down for vertical landings.
>> No. 21148 ID: 30f399
File 146965462918.jpg - (248.42KB , 2048x1448 , US F-35B STOVL Rolls-Royce lift system 4.jpg )
>> No. 21149 ID: 30f399
File 146965475522.jpg - (958.84KB , 4000x2667 , US AV-8B Harrier II (BAE McDonnell-Douglas) 2nd ge.jpg )
The F-35B was designed to operate from smaller Harrier carriers and replace the old AV-8B Harrier.

AV-8B Harrier jets with Marine Attack Squadron 311 fly over Helmand province, Afghanistan, June 10, 2013. The jets received aerial refueling support from a KC-130J Hercules aircraft with Marine Aerial Refueler Transport Squadron 252 before continuing their air operations.
>> No. 21150 ID: 30f399
File 146965499838.jpg - (0.98MB , 5000x3333 , US AV-8B Harrier over Afghanistan 2013 1.jpg )
A U.S. Marine Corps AV-8B Harrier aircraft assigned to Marine Attack Squadron (VMA) 311 flies over Helmand province, Afghanistan, June 10, 2013.
>> No. 21153 ID: 088449

Yeah, the forward thing is a fan that blows down for Short TakeOffs and Vertical Landings. (STOVL)

Rather than the AV-8B Harrier's method of just using jet exhaust, the F35 uses a lift fan that's connected by a drive shaft to the engine. A sort of hybrid convertible turbofan / turboshaft engine.

The T56 >>21106 is the classic example of a turboshaft engine. Rather than producing thrust, it makes shaft horsepower.


The more I think about it, the insane it seems. What kind of buttfuckery is going on here?
>> No. 21154 ID: 9723b1
File 146967430538.png - (74.37KB , 2091x2506 , US06926231-20050809-D00005.png )
The Russian version just has two lightweight turbojet engines instead of one massive pseudoturbofan. Why did they use the fan? The only advantage of a fan I can think of is better fuel efficiency, but that obviously isn't the case here (or needed).
Why didn't they use two tiny compact turbojet engines? Could even use the Boeing PETA.
>> No. 21155 ID: d4c8ee
File 146967801230.jpg - (1.11MB , 5615x3159 , 140910-M-SR938-996.jpg )
Because separate lift jets have been operationally shown to be inferior due to the added weight and lower power.

Combined lift from the two lift jets on the Yak-38 was 64 kilo Newtons of thrust.

Lift from the original GR3 Harrier's Pegasus (single engine with four directed vents) was 97kN, the AV-8B and GR9 increased this to 105 and 110kN respectively.

Combined lift from the F-35B's Rolls-Royce lift system (tail exhaust, the fan, two wing ducts) is 186kN.
>> No. 21156 ID: 9723b1
The commie version of F-35 is the Yak-141, not Yak-38.

The main reason it's a superior idea is that the thrust of the mini jets is independent of the main engine, whereas in F-35 the fan is sapping power from the engine itself.
Yak-141: [42kN + 42kN front lift] + 152kN main = 235kN. More lift power on a lighter aircraft is why the Yak-141 is a true VTOL whereas F-35 is STOVL.

Especially with something like PETA providing thrust, which has fewer moving parts and can be a load bearing structure member. Only downside is high fuel consumption and noise, but since it's only going to be active during landing and takeoff it's not really an issue.
>> No. 21157 ID: d4c8ee

Key word here is that I said "operationally."

But if we're expanding to "failed prototypes", like the Yak-141 the XV-4, VAK 191B, VJ 101, Mirage Balzac V and Do 31 all tried to use separate vertical jets, and were all canceled for a lack of performance. Likewise the Convair 200 concept (which "inspired" the three-bearing tail pipe on the Yak-141) ended up being shelved for similar reasons before the Sea Control Ship program got killed.

>152kN main

That's afterburner thrust, which would not be used for vertical flight, due to the Yak-141 being unable to hover for more than 150 seconds due to heat buildup. Dry thrust for the 141 was 108kN.

>Especially with something like PETA providing thrust, which has fewer moving parts and can be a load bearing structure member. Only downside is high fuel consumption and noise, but since it's only going to be active during landing and takeoff it's not really an issue.

Two whole jet engines is "fewer moving parts" than a power takeoff driving a fan? Okay then.
>> No. 21158 ID: 385f49
>Two whole jet engines is "fewer moving parts" than a power takeoff driving a fan? Okay then.
With LM, you never know... >>21145
>> No. 21159 ID: 9723b1
>"failed prototypes"
You're cute.

>That's afterburner thrust
>Dry thrust for the 141 was 108kN.
And the total is still 190kN, which is more than your 180kN value for F-35 which includes the fucking control jets. 190 is more than 180, and on a lighter jet.

>Two whole jet engines is "fewer moving parts" than a power takeoff driving a fan?
Yeah if they're pulsejet engines with <10 mobile (not always moving) parts.

>Okay then.
Okay then. Come back when you're informed.
>> No. 21160 ID: 9723b1
Actually I posted the PETA schematics and you still didn't know they were pulsejets, because you didn't even inform yourself on information I provided in the thread. So fuck you, don't ever come back.
>> No. 21161 ID: d4c8ee
Rolls-Royce, not Lockheed.

>it doesn't matter that you can't use afterburner in VTOL because it would physically destroy the aircraft, it's still more powerful!
>they're pulsejets not turbojets no matter what the manufacturer says!

ITT: Boris gets triggered
>> No. 21162 ID: 30f399
File 146999362364.jpg - (191.29KB , 1600x1346 , Russian Yak-141 (NATO Freestyle) 1987 supersonic V.jpg )
The Soviet Yak-141 (NATO designation Freestyle) 1987 supersonic VTOL fighter was used for testing the VTOL design.
>> No. 21163 ID: 30f399
File 146999368032.jpg - (155.95KB , 1600x954 , Russian Yak-141 VTOL hover at 1992 Farnborough Air.jpg )
Here, a Yak-141 VTOL fighter hovers at the 1992 Farnborough Airshow.
>> No. 21164 ID: 30f399
  It has been stated that the swivel nozzle featured on the F-35B is copied from the Russian Yakovlev-141 with the claim that blueprints were supposedly bought from the tottering Yakovlev corporation by Lockheed Martin. Some point out that a Convair experimental swivel nozzle VTOL design from 1969 pre-dated the Yak design and that Yakovlev stole from Convair.
This may become acedemic as neither the Yak-141 nor the F-35B may be put into production. Rumors have circulated that the F-35B has been cancelled but others state that the USMC and foreign buyers are considering pulling out because of the development delays and price increases.
Soviet vertical takeoff fighter Yakovlev Yak-141 'Freestyle' https://youtu.be/VQ70D6nWQ6M
>> No. 21165 ID: 0d59ae
>they're pulsejets not turbojets no matter what the manufacturer says!
The manufacturer says pulsejets, the P in PETA even stands for pulse.
>A Pulse Ejector Thrust Augmentor or PETA is a proprietary pulse jet engine developed by Boeing.

You could have googled it before making a fool of yourself.
>> No. 21166 ID: 0d59ae
Both companies admit to a 25 year long relationship, it's silly to call it rumors at this point.
>> No. 21167 ID: 385f49
>Rolls-Royce, not Lockheed.
Lockheed is a customer, which is more important in that case, since the engine is a part of larger structure, most problems arize from intergration rather than design.
>> No. 21168 ID: d4c8ee
>RD-41 - single-loop single-shaft turbofan engine with thrust vector control developed in the Rybinsk Motors CB. It was used to test samples VTOL Yak-141 as the lifting motor. Some sources call this engine RD-48.

clearly a pulse jet.

Yeah. Production is already something like 24+ flying F-35Bs right now. 12 for the Marines and 12 for the RAF so they can both declare it IOC and pretend it's fit for service. (and this is out of 170+ prototypes and low-rate production airframes)

And regardless, the F-35B isn't getting canceled. The Marines need something to fly off their WWII flattops, the British banked on it entirely because they're too poor to build a real carrier, and Italy likewise is intending on buying them to replace the Harriers on their two carriers. Spain is also likely to buy a handful for the same reason in 2020-2030 when their Harriers reach the end of their airframe lifespans.
>> No. 21169 ID: 9723b1
File 147009928958.png - (17.80KB , 778x368 , Retard.png )
Here's your clue I was talking about PETA and not RD-41 you dense mouthbreather - you quoted the part that proves you're a retard.

Besides, didn't I tell you not to come back unless you had something smart to say, or did you fail to read that sentence as well?
>> No. 21240 ID: 1e7925
File 147246414076.png - (808.55KB , 1650x1080 , Lift Fan Prevents Hot Gas Reingestion Huff ED TIF.png )

Yes, they're stuck with the F35B, no one is going to build new Harriers.

Mostly true. Lockheed bought information from a desperate Yakovlev for some data, but developed the F35B on their own.

this article explains the developement reasonably well, comparing Harrier-style engine setup to the F35 w/a table at the end. Images wouldn't load for me, though.


pic related is a benefit of having a lift fan, hot engine exhaust is not re-ingested into the engine.
>> No. 21270 ID: 9315da
File 147343039010.jpg - (1.94MB , 2736x1824 , IMG_2180_web.jpg )
If you get the chance to stop by the USAF museum in Dayton, Ohio, do so. They've got just so much stuff there, it's crazy. Also a new hangar with excellent lighting (pic related). If they'd get the new LED lighting into the other hangars it'd be amazing. Other hangars are lit with "theatrical" lighting which is a nice way of saying dimly lit to save money. New hangar has bright LED lights, so much easier to get good photos...
>> No. 21271 ID: 9315da
File 147343057128.jpg - (2.23MB , 2736x1824 , IMG_2119_web.jpg )

Also they have Bockscar. The B-29 that dropped the nuke on Nagasaki.
>> No. 21324 ID: ec7ed1
File 147545398423.jpg - (238.87KB , 1800x1202 , German WW2 Messerschmitt Me 262A at the National M.jpg )
I would love to go there. I have so many pictures of their exhibits, already.
- DAYTON, Ohio -- Messerschmitt Me 262A at the National Museum of the United States Air Force. (U.S. Air Force photo)
>> No. 21325 ID: ec7ed1
File 147545402627.jpg - (1.17MB , 1800x1200 , German WW2 Messerschmitt Me 262A at the National M.jpg )
Developed from a 1938 design by the Messerschmitt company, the Me 262 Schwalbe was the world's first operational turbojet aircraft. First flown under jet power on July 18, 1942, it proved much faster than conventional airplanes. Development problems (particularly its temperamental engines), Allied bombings and cautious Luftwaffe leadership contributed to delays in quantity production.

On July 25, 1944, an Me 262 became the first jet airplane used in combat when it attacked a British photo-reconnaissance Mosquito flying over Munich. As a fighter, the German jet scored heavily against Allied bomber formations. U.S. Army Air Forces bombers, however, destroyed hundreds of Me 262s on the ground. Of the more than 1,400 Me 262s produced, fewer than 300 saw combat. Most Me 262s did not make it to operational units because of the destruction of Germany's surface transportation system. Many of those that did were unable to fly because of lack of fuel, spare parts or trained pilots.

The Me 262A on display was brought to the United States from Germany in July 1945 for flight evaluation. Restored by the 96th Mobile Maintenance Squadron, Kelly Air Force Base, Texas, in 1976-1979, it is painted without operational unit markings as an aircraft that has just left the production line. http://www.nationalmuseum.af.mil/Visit/MuseumExhibits/FactSheets/Display/tabid/509/Article/196266/messerschmitt-me-262a-schwalbe.aspx
>> No. 21326 ID: ec7ed1
File 147545405583.jpg - (1.35MB , 1800x1200 , German WW2 Messerschmitt Me 262A at the National M.jpg )
Armament: Four 30mm MK-108 cannons and 1,000 lbs. of bombs
Engines: Two Junkers Jumo 004s of 1,980 lbs. thrust each
Maximum speed: 540 mph
Cruising speed: 460 mph
Range: 650 miles
Ceiling: 38,000 ft.
Span: 41 ft.
Length: 34 ft. 9 in.
Height: 11 ft. 4 in.
Weight: 15,600 lbs.
>> No. 21327 ID: ec7ed1
File 147545407641.jpg - (387.21KB , 1800x1228 , German WW2 Messerschmitt Me 262A cockpit 1.jpg )
Messerschmitt Me 262A cockpit at the National Museum of the United States Air Force.
>> No. 21328 ID: ec7ed1
File 147545536851.jpg - (274.10KB , 1800x1176 , UK WW2 De Havilland DH98 Mosquito B_ Mk_ 35 manufa.jpg )
360-degree Virtual Tour:
De Havilland DH 98 Mosquito
The famous British Mosquito -- known to many as "Mossie" --was a versatile aircraft used extensively during World War II. Constructed primarily of plywood with a balsa wood core, it had excellent speed, altitude and range. First flown on Nov. 25, 1940, the Mosquito entered production in mid-1941 and was produced until well after the end of the war. Almost 8,000 Mossies were built in Great Britain, Canada and Australia.

Although best known for their service with the Royal Air Force, Mosquitoes were also flew in several U.S. Army Air Force units as photographic and weather reconnaissance aircraft and as a night fighter. During the war, the USAAF acquired 40 Canadian Mossies and flew them under the American F-8 (photo reconnaissance) designation. In addition, the British turned over more than 100 Mosquitoes to the USAAF under Reverse Lend-Lease. These aircraft retained their British designations.

The aircraft on display is a British-built B. Mk. 35 manufactured in 1946 (later converted for towing targets) and is similar to the P.R. Mk. XVIs used by the USAAF. It was flown to the museum in February 1985. This Mosquito, serial RS709, has been restored to a Mk. XVI configuration and painted as NS519, a weather reconnaissance aircraft of the 653rd Bombardment Squadron based in England in 1944-1945. http://www.nationalmuseum.af.mil/Visit/MuseumExhibits/FactSheets/Display/tabid/509/Article/196281/de-havilland-dh-98-mosquito.aspx
- DAYTON, Ohio -- De Havilland DH 98 Mosquito in the World War II Gallery at the National Museum of the United States Air Force.
>> No. 21329 ID: ec7ed1
File 147545540436.jpg - (235.05KB , 1800x1184 , UK WW2 De Havilland DH98 Mosquito B_ Mk_ 35 manufa.jpg )
Mosquito Markings
Just before D-Day (the June 6, 1944, invasion of France), black and white stripes were applied almost overnight to a vast majority of U.S. and British aircraft to clearly identify them during the Normandy landings. In the rush to mark all the aircraft, masking and spraying sometimes gave way to more expeditious method of painting them by hand.

Invasion stripes, like the ones being applied by the ground crewman in the museum's exhibit, would have completely encircled the wings and fuselage. The 25th Bombardment Group adopted a red tail for their Mosquitoes in August 1944 and removed the invasion stripes from the upper wing and upper fuselage surfaces in September 1944.
>> No. 21330 ID: ec7ed1
File 147545543387.jpg - (253.56KB , 1600x1004 , UK WW2 De Havilland DH98 Mosquito B Mk_ 35.jpg )
Armament: 4,000 lbs. of bombs in bomber version
Engines: Two Rolls-Royce Merlins of 1,690 hp each
Maximum speed: 415 mph
Cruising speed: 276 mph
Range: 1,955 miles
Ceiling: 42,000 ft.
Span: 54 ft. 2 in.
Length: 40 ft. 6 in.
Height: 12 ft. 6 in.
Weight: 23,000 lbs. loaded
>> No. 21331 ID: ec7ed1
File 147545549788.jpg - (3.47MB , 2400x1800 , UK WW2 De Havilland DH98 Mosquito B_ Mk_ 35 cockpi.jpg )
De Havilland DH 98 cockpit in the WWII Gallery at the National Museum of the U.S. Air Force.
>> No. 21332 ID: ec7ed1
File 147545562341.jpg - (3.92MB , 2400x1800 , UK WW2 De Havilland DH98 Mosquito B_ Mk_ 35 cockpi.jpg )
The Timber Terror is one of my favorite strike bombers of WW2.
>> No. 21380 ID: 9315da
File 147600534843.jpg - (2.60MB , 2736x1824 , IMG_2302modweb.jpg )

Like I said, if you get the chance, do. The place is so huge that even if you have a slight interest in space and aviation you can easily spend the entire day there.

I'm planning on visiting there again, thinking of bringing my camera tripod (they'll let you bring it in, last I checked) so I can take some decent photos with their crap lighting.
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