What if

General Modelling Forum => General Modeling topics => Topic started by: ysi_maniac on October 09, 2009, 05:55:50 AM

Title: Technical question
Post by: ysi_maniac on October 09, 2009, 05:55:50 AM
Planes designed for long range use to have big wing.
What is the best, increasing wingspan or increasing wing area?

Thanks!
Carlos.
Title: Re: Technical question
Post by: JayBee on October 09, 2009, 06:16:11 AM
Best for increased range is to increase the wingspan, in other words you are increasing the aspect ratio and the wing is more efficient.


BUT..............

doing that you will sacrifice both speed and manouverability.

The choice is yours.

Of course another way to effectively increase the span is add winglets.

jimB
Title: Re: Technical question
Post by: Fulcrum on October 10, 2009, 12:01:48 AM
Which could lead to another question: did anyone build a what-if fighter jet with winglets???
Title: Re: Technical question
Post by: elmayerle on October 10, 2009, 12:34:11 AM
Quote from: Fulcrum on October 10, 2009, 12:01:48 AM
Which could lead to another question: did anyone build a what-if fighter jet with winglets???

Doesn't quite qualify, but a production FV-12A?
Title: Re: Technical question
Post by: Shasper on October 10, 2009, 02:18:19 AM
Ideally you'll want to increase both the span & the area of the wing so you can have the increase  internal fuel tankage, but it would depend on what type of aircraft we're dealing with.
Title: Re: Technical question
Post by: Mossie on October 10, 2009, 05:47:56 AM
Carlos, if what your looking at is purely long range flight, you want to look at aircraft like the U-2, Voyager, Global Flyer, M-17 & M-52, Global Hawk.

For a combat aircraft, a wing like Canberra's might be a good option, had a combination of moderately long span with large area.  It had a long range & surprisingly good maneouvarbility for an aircraft of size.  Had a slightly unusual combination of straight inner section, trapezoidal outer section.

If it's a fighter, maybe a delta wing?  It's a compromise, but deltas can hold plenty of fuel.
Title: Re: Technical question
Post by: B777LR on October 10, 2009, 07:18:56 AM
Quote from: Fulcrum on October 10, 2009, 12:01:48 AM
Which could lead to another question: did anyone build a what-if fighter jet with winglets???

The Yak-130 prototype
Title: Re: Technical question
Post by: GTX on October 10, 2009, 12:16:35 PM
Quote from: B787 on October 10, 2009, 07:18:56 AM
Quote from: Fulcrum on October 10, 2009, 12:01:48 AM
Which could lead to another question: did anyone build a what-if fighter jet with winglets???

The Yak-130 prototype

Technically not a fighter, but still close.

At a stretch (and it is a very long stretch), one could say the F-4 Phantom with the upturned outer wing sections.

Regards,

Greg
Title: Re: Technical question
Post by: B777LR on October 10, 2009, 01:13:44 PM
Quote from: GTX on October 10, 2009, 12:16:35 PM
Quote from: B787 on October 10, 2009, 07:18:56 AM
Quote from: Fulcrum on October 10, 2009, 12:01:48 AM
Which could lead to another question: did anyone build a what-if fighter jet with winglets???

The Yak-130 prototype

Technically not a fighter, but still close.

At a stretch (and it is a very long stretch), one could say the F-4 Phantom with the upturned outer wing sections.

Regards,

Greg

Now, military aircraft with winglets:

C-17
C-135
C-32
C-37
C-40

Any more?