F-35B: Vertical Takeoff & Landing Videos

In summary, the three videos showcased the F-35B, the Marine version of the Joint Strike Fighter. One video showed how the lift fans operate, another showed the F-35B moving from horizontal flight to vertical landing, and the last video showed the F-35B taking off and landing vertically. It was noted that the rear duct was oscillating laterally and that it might be a stabilization response. Finally, Rainman provided a summary of what fly by wire technology is and how it works. He mentioned that before FBW systems with computers and wires came into fashion, aircraft were controlled with "Fly By Cable" (FBC) systems. It was also mentioned that the yak-141 was 25 years ahead
  • #1
Astronuc
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This was sent to me -

This week we have three videos, all showing the F-35B, the Marine version with vertical take-off and landing capability.

This one shows how the lift fans operate. "JSF X-35B Tests Lift-Fan Propulsion System" (11.38 MB - ".mov").
http://www.lockheedmartin.com/data/assets/7136.mov

This shows the F-35B moving from horizontal flight to vertical landing. "JSF X-35B Transition to Vertical Landing" (4.46 MB - ".mov")
http://www.lockheedmartin.com/data/assets/7139.mov

This shows the F-35B taking off and landing vertically. "F-35,JSF" (2.32 MB - ".mov")
http://www.lockheedmartin.com/data/assets/534.mov
 
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  • #2
Jeez, Astro... I want to trade mailing lists with you. All that anybody sends me is real estate fliers and credit card applications. :grumpy:

I couldn't help noticing in that last clip that the rear duct is oscillating laterally. Is that a stabilization response, or did someone forget a lock washer in the shop?
 
  • #3
Damn work firewall...
 
  • #4
Let me just say that the F-35 is freakin' awesome. First video footage I've seen of it--thanks Astro.
 
  • #5
great footage... but why doesn't someone send similar stuff to my email account...
 
  • #6
Danger said:
I couldn't help noticing in that last clip that the rear duct is oscillating laterally. Is that a stabilization response, or did someone forget a lock washer in the shop?
I'd say a good example of fly by wire output :smile:
Normal control surfaces won't work.

Think of balancing on a stick.
 
  • #7
NoTime said:
Think of balancing on a stick.
I quit thinking about stuff like that when I moved in with W. :tongue:
 
  • #8
I couldn't help noticing in that last clip that the rear duct is oscillating laterally. Is that a stabilization response, or did someone forget a lock washer in the shop?

Geeze; don't you know anything about airplanes?:rolleyes: That means it's happy!:approve:
 
  • #9
:rofl: :rofl: :rofl:
 
  • #10
Just be sure to wear asbestos gloves if you want to scratch its belly.
 
  • #11
Dammit... is everybody after my badge now? :grumpy:


:biggrin:
 
  • #12
Looks like we ripped off 16+ year old russian technology.

http://en.wikipedia.org/wiki/Yak-141

yak141_3.jpg


Video:http://video.google.com/videoplay?docid=5595724743736826361&q=yak+41
 
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  • #13
You all keep talking of the fly by wire technology... could someone explain or outline just what you mean by it... I'm having difficulty understanding your conversations...
 
  • #14
Fly-By-Wire just means that when the pilot moves a controll (the throttle or stick), he isn't directly moving the controll surfaces of the aircraft (the flaps, rudder, aelarons, etc.). He's just telling a computer what he wants the aircraft to do, and the computer makes the necessary adjustments to the controll surfaces, through electric servomotors. Without the computer making tiny adjustments about 40 times per second, most of today's jet fighters would be impossible to fly.
 
  • #15
Oh alright, so it just means that the aircraft maneuvres are automated... and then where does this fly by wire term originate from
 
  • #16
It originated from the fact that there is no mechanical linkage between the controls and the control surfaces. The only thing connecting them is the computer and wiring that goes to the actuators.
 
  • #17
Hi banerjeerupak,
banerjeerupak said:
Oh alright, so it just means that the aircraft maneuvres are automated... and then where does this fly by wire term originate from
It does not necessarily mean that the manuevers are automated, because the pilot is still "in the loop" as we say. The pilot is still closing the aircraft control loop in his head.

Automated control would be characterized by the computer itself (through autopilot control laws) closing the aircraft control loop. But a fly-by-wire (FBW)aircraft can still be flown manually (via stick and throttle).

Fred's response hopefully gives you more insight as to what FBW means. But let me give you another visualization to see if that would help:

Before FBW systems with computers and wires came into fashion, one could say that aircraft were controlled with "Fly By Cable" (FBC) systems. Mechanical cables transmitted the motion of the control stick and throttle to the surface actuators and the fuel metering valve. Now instead of mechanical cables, we have electronic position sensors on the stick and throttle that sense its position and encodes it into an electrical signal that goes to the flight control computer. The flight control computer then runs the software (called "control laws") that transform the pilot's inputs into electrical commands that are sent to the actuators and fuel metering valve.

Hope that helps,
Rainman
 
  • #18
A video in english

http://video.yahoo.com/video/play?p=yak+141&toggle=1&ei=UTF-8&b=0&oid=1c87030bf3daab2a&rurl=www.planestv.com&vdone=http%3A%2F%2Fvideo.yahoo.com%2Fsearch%2Fvideo%3Fp%3Dyak%2B141%26toggle%3D1%26ei%3DUTF-8

Also carrier landing:

http://www.youtube.com/p.swf?video_id=HHFsMVOEhF4&eurl=http%3A//video.yahoo.com/video/play%3Fp%3Dyak%2B141%26toggle%3D1%26ei%3DUTF-8%26b%3D2%26oid%3D7d83533080f64e84%26rurl%3Dwww.yout&iurl=http%3A//sjl-static5.sjl.youtube.com/vi/HHFsMVOEhF4/2.jpg&t=OEgsToPDskL55PDJhfS3PN1AMUqDmGfh

I don't see what all the hype is for, the JSF is nothing new, nor novel for that matter. According to the wiki link, Lockheed just paid Yakovlev for the designs. They started the 141 back in 1975 and have put lots of money, time, and research into the thing. It's no wonder Lockheed won out to boeing.

The plane even looks identical in every respect, only modernized.

The yak-141 was 25 years ahead of its time.
 
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  • #20
cyrusabdollahi said:
Looks like we ripped off 16+ year old russian technology.

Nope, it all came from li'l ol' England. I know 'cos I was there at Rolls Royce.

This was the first version of RR's VTOL testing. Strange that the best set of pictures of it has text in Russian :-)

http://flatrock.org.nz/topics/flying/flying_bedstead.htm
http://vtol.boom.ru/vtol/TMR/index.html

I've seen BAE Harriers hundreds of times but there is still something very unnerving about seeing one fly a fast circuit and a landing approach, then just slow down and stop in mid air. Watching trainee pilots learning how to fly them backwards and sideways is also fun.

http://www.vflintham.demon.co.uk/aircraft/harrier/harrier.htm
 
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  • #21
great examples of fly by wire. I'm getting a hang of the concept. it is where the decisions are taken by the pilot but he is not responsible for moving every part of the wing but only is required to instruct the plane according to how he wants to make it move...
 
  • #22
AlephZero said:
Nope, it all came from li'l ol' England. I know 'cos I was there at Rolls Royce.

This was the first version of RR's VTOL testing. Strange that the best set of pictures of it has text in Russian :-)

http://flatrock.org.nz/topics/flying/flying_bedstead.htm
http://vtol.boom.ru/vtol/TMR/index.html

I've seen BAE Harriers hundreds of times but there is still something very unnerving about seeing one fly a fast circuit and a landing approach, then just slow down and stop in mid air. Watching trainee pilots learning how to fly them backwards and sideways is also fun.

http://www.vflintham.demon.co.uk/aircraft/harrier/harrier.htm

No, that's not what I was getting at. The JSF is bought technology from the Russians. Ok, maybe not bought, 'partnership'. :wink:
 
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1. What is the F-35B?

The F-35B is a fifth-generation, single-seat, single-engine, all-weather stealth multirole fighter aircraft. It is designed to perform a variety of missions including air-to-air combat, air-to-ground strikes, and intelligence, surveillance, and reconnaissance (ISR) missions.

2. What makes the F-35B unique?

The F-35B is unique because of its Vertical Takeoff and Landing (VTOL) capabilities. This means that it can take off and land vertically, without the need for a traditional runway. It also has short takeoff and landing (STOL) capabilities, allowing it to operate from smaller, less developed airfields.

3. How does the F-35B achieve VTOL?

The F-35B achieves VTOL through the use of a lift fan and a vectoring nozzle. The lift fan, located in the center of the aircraft, provides vertical lift during takeoff and landing. The vectoring nozzle, located at the rear of the aircraft, allows for thrust to be directed downwards, providing the necessary lift for VTOL operations.

4. What are the advantages of VTOL for the F-35B?

VTOL capabilities allow the F-35B to operate from a wider range of locations, including small or damaged airfields, and even from ships. This gives it greater flexibility and the ability to operate in more diverse environments. It also reduces the need for traditional runways, making it less vulnerable to attacks on air bases.

5. How do the VTOL capabilities of the F-35B benefit military operations?

The VTOL capabilities of the F-35B provide significant advantages for military operations. They allow for quicker deployment of the aircraft to different locations, allowing for more rapid response to threats. They also enable the aircraft to operate in more confined areas, increasing its ability to support ground troops and conduct close air support missions.

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