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Author Topic: F-16 DSI inlet testbed  (Read 13684 times)

Offline flateric

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F-16 DSI inlet testbed
« on: July 25, 2010, 01:36:04 am »
...
"There are many disbelievers in
stealth, more than a few of them truly technically ignorant and proud of it." Sherm Mullin, Skunk Works

Offline mr.sukhoi

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Re: F-16 DSI inlet testbed
« Reply #1 on: July 25, 2010, 06:52:58 am »
when is that tested???

Offline mr.sukhoi

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Re: F-16 DSI inlet testbed
« Reply #2 on: July 25, 2010, 06:56:18 am »
intake looks like on Boeing X-32

Offline Matej

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Re: F-16 DSI inlet testbed
« Reply #3 on: July 25, 2010, 07:06:30 am »
Twelve flights from 11. to 20. December 1996. Testbed for the proposed JSF inlet.

Bizarre aviation expert.

Offline RSF

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Re: F-16 DSI inlet testbed
« Reply #4 on: July 25, 2010, 10:32:07 pm »
Imagine this intake combined with the cranked delta wing of the F-16XL, with the avionics/engines of the latest Block 60 UAE Viper!

http://www.dfrc.nasa.gov/gallery/photo/F-16XL1/Small/EC97-44354-3.jpg

 

Offline Kryptid

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Re: F-16 DSI inlet testbed
« Reply #5 on: July 26, 2010, 07:51:41 pm »
Would be nice to see a production F-16 with that inlet. Supposedly it performed better than the standard inlet.
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Offline QuadroFX

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Re: F-16 DSI inlet testbed
« Reply #6 on: July 27, 2010, 10:06:59 am »
Would be nice to see a production F-16 with that inlet. Supposedly it performed better than the standard inlet.
Eeehh, no. DSI intake is optimized for M up to 1.6.

Online sferrin

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Re: F-16 DSI inlet testbed
« Reply #7 on: July 27, 2010, 12:57:50 pm »
Would be nice to see a production F-16 with that inlet. Supposedly it performed better than the standard inlet.
Eeehh, no. DSI intake is optimized for M up to 1.6.

How could you have possibly missed the extended arguement on Key?

"The overall inlet design, called a diverterless supersonic inlet or DSI, moved from concept to reality when it was installed and flown on a Block 30 F-16 in a highly successful demonstration program.

The new inlet showed slightly better subsonic specific excess power than a production inlet and that verified the overall system benefits of eliminating the diverter. Test pilots remarked that military power settings and thrust characteristics were very similar to standard production F-16 aircraft with the same General Electric F110-GE-129 engine. Considering the overall goal of the flight test program was to demonstrate the viability of this advanced inlet technology, the results were excellent.

The DSI bump functions as a compression surface and creates a pressure distribution that prevents the majority of the boundary layer air from entering the inlet at speeds up to Mach 2. In essence, the DSI does away with complex and heavy mechanical systems.

The DSI concept was introduced into the JAST/JSF program as a trade study item in mid-1994. It was compared with a traditional "caret" style inlet. The trade studies involved additional CFD, testing, and weight and cost analyses. The new inlet earned its way into the JSF design after proving to be thirty percent lighter and showing lower production and maintenance costs over traditional inlets while still meeting all performance requirements."
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Offline saintkatanalegacy

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Re: F-16 DSI inlet testbed
« Reply #8 on: July 27, 2010, 10:05:24 pm »
I remember posting some links about DSI studies including a chinese paper on transonic speeds...
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Offline Orphic

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Re: F-16 DSI inlet testbed
« Reply #9 on: October 16, 2010, 11:56:07 pm »
Here's a boundary layer particle trace of the F-35 inlet I found showing how much get diverted
http://www.xilu.com/community/junshi-temp/JSF/3.jpg
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Offline mz

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Re: F-16 DSI inlet testbed
« Reply #10 on: October 17, 2010, 02:46:25 am »
That's fascinating, thanks for the find.

Offline flateric

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Re: F-16 DSI inlet testbed
« Reply #11 on: November 02, 2010, 11:15:19 am »
another present from Lockheed's CodeOne Magazine staff

Quote
Sideview of an F-16 modified with diverterless supersonic inlet, or DSI, developed for the Joint Strike Fighter -- now the F-35 Lightning II -- program. At high aircraft speeds through supersonic, the bump in the inlet works with the forward-swept inlet cowl to redirect unwanted boundary layer airflow away from the inlet, essentially doing the job of heavier, more complex, and more costly diverters used by current fighters. The flight test program consisted of twelve flights flown in nine days in December 1996.
"There are many disbelievers in
stealth, more than a few of them truly technically ignorant and proud of it." Sherm Mullin, Skunk Works

Offline DSE

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Re: F-16 DSI inlet testbed
« Reply #12 on: November 03, 2010, 03:30:11 pm »
It would appear the DSI has been extended to hypersonic inlets as well, hence the DHI,
http://www.freepatentsonline.com/7568347.html or
http://www.freepatentsonline.com/7568347.pdf

Offline Skyblazer

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Re: F-16 DSI inlet testbed
« Reply #13 on: November 03, 2010, 04:14:52 pm »
More pics:

Offline Mr London 24/7

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« Last Edit: September 25, 2011, 07:56:14 am by mr_london_247 »