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  #1  
Old 12-03-2018, 10:36 AM
Towline Towline is offline
 
Join Date: Feb 2018
Location: West Central UK
Posts: 7
Default UK RV-6 Aerobatics Approval

We've just had aerobatics approval through for our RV-6 from the UK LAA. As I couldn't find a lot online to help in the process, I've condensed our experience into a short blog article here that others may hopefully find useful.

The process has seemed fairly straight forward despite looking quite arduous to this pair of amateurs.

We're non-inverted and I've been told to avoid vertical rolls as they can empty a lot of oil, also stall turns will use around half a quart.

Any advice on -6 aerobatics would be great.
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  #2  
Old 12-03-2018, 04:42 PM
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mike newall mike newall is offline
 
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Location: Yorkshire, England
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6 aeros are nearly....nearly as good as 7 aeros without the engine stopping issues unless you have injection.

A carb just limits you to upline time and any slight negative stuff that injection just doesn't care about.

Oily belly can be avoided with an Andair interceptor.

If you consider an RV as a machine to do aeros for you and your passenger rather than for the outside observer, you will have loads of fun.

In the rarefied UK air of LAA LAA land, 2 up aeros in an RV6 needs careful consideration due weight but it can be done.

So, within the design spec, you can now venture into eggy loops, ballistic rolls, short, non vertical stall turn (hammerheads for the Colonials) and any amount of combinations of the above.

Find someone who knows RV's, who can do pleasant low G aeros and who isn't wishing to inflate their ego and you will be rewarded with good tuition.

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  #3  
Old 12-04-2018, 04:32 AM
Towline Towline is offline
 
Join Date: Feb 2018
Location: West Central UK
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Thanks for the info chaps.

I have plenty of hours aerobating the Citabria and my last aeros flight was an RV-7 (had so much fun that I made myself sick).

The Citabria really is the opposite end of the spectrum; diving at full throttle 15deg nose down to reach 140mph

We've been told about the Half Raven system but I will investigate the Andair unit as well. We've already got quite a bit of their kit installed.
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  #4  
Old 12-04-2018, 09:12 AM
Pittsartist Pittsartist is offline
 
Join Date: Aug 2013
Location: UK
Posts: 135
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You should try to get to the next Baea RV aerobatics event .... I'm hoping there will be one in 2019.

Even if you choose not to actually fly, there's still lots of "RV aero" related experience around to soak up in a friendly and relaxed atmosphere.

2018 was at Fenland - https://www.aerobatics.org.uk/contest/result/142

2017 Leicester - https://www.aerobatics.org.uk/contest/result/130

2016 Little gransden - https://www.aerobatics.org.uk/contest/result/115
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  #5  
Old 12-04-2018, 11:56 AM
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lucaperazzolli lucaperazzolli is offline
 
Join Date: Sep 2006
Location: Trento, northern Italy
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Thumbs up

Thank you for sharing your experience
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RV-8 QuickBuild, Catto 3 blade Prop, YO-360-A1A. Status : I-LUKE is Flying - 350 h. and counting
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  #6  
Old 12-04-2018, 04:55 PM
rvbuilder2002 rvbuilder2002 is offline
 
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Location: Hubbard Oregon
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Quote:
Originally Posted by mike newall View Post
6 aeros are nearly....nearly as good as 7 aeros without the engine stopping issues unless you have injection.
Personal opinion I guess........

I think the RV-6 is better.

It typically has a lower empty weight (better power to weight ratio).
Lighter ailerons.
A little bit more nimble feeling.

Not sure what you mean by engine stoppage issue. There is nothing particular about either the 6 or 7 that would make either one more likely to have an engine stoppage. It is totally related to G loading and what fuel system is installed.
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  #7  
Old 12-05-2018, 04:05 AM
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mike newall mike newall is offline
 
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It is a product of you designing aeroplanes with such good performance ability Scott

I agree that the feel of the 6 is more nimble than the 7, there isn't the aileron bumping on the 6 and it is crisper in roll and pitch. The 7 with injection and a C/S prop just makes aeros much more fluid and to me, more enjoyable. I do and demonstrate aeros for us - the occupants, not for an observer, so the most important thing is smoothness, reduction of G where possible and a pleasing experience.

When you have the performance in hand to do uplines of 1500' and more, with fuel injection, it really doesn't matter as you have fuel all the way. The poor old carburetted motor runs a little dry at the top and I have had 1 stoppage and a couple of hiccups. Not an issue, you modify your programme accordingly.

We understand that the 14 we have in build will be a little softer - that won't matter to us. If I want to do competition stuff, I would get a more appropriate aeroplane, what we have is just spot on for our requirements
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  #8  
Old 12-05-2018, 10:04 AM
rvbuilder2002 rvbuilder2002 is offline
 
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Quote:
Originally Posted by mike newall View Post
It is a product of you designing aeroplanes with such good performance ability Scott

I agree that the feel of the 6 is more nimble than the 7, there isn't the aileron bumping on the 6 and it is crisper in roll and pitch. The 7 with injection and a C/S prop just makes aeros much more fluid and to me, more enjoyable. I do and demonstrate aeros for us - the occupants, not for an observer, so the most important thing is smoothness, reduction of G where possible and a pleasing experience.

When you have the performance in hand to do uplines of 1500' and more, with fuel injection, it really doesn't matter as you have fuel all the way. The poor old carburetted motor runs a little dry at the top and I have had 1 stoppage and a couple of hiccups. Not an issue, you modify your programme accordingly.

We understand that the 14 we have in build will be a little softer - that won't matter to us. If I want to do competition stuff, I would get a more appropriate aeroplane, what we have is just spot on for our requirements
Ok, that clarifies your post a bit, but it still doesn't correctly differentiate between aero in an RV-6 vs RV-7 because RV-6's can have constant speed props and fuel injection.
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  #9  
Old 12-05-2018, 02:59 PM
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mike newall mike newall is offline
 
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Very true......

Just rarely see them over here.

I am comparing apples and pears which is unfair, however I was merely pointing out that a fixed pitch, carburetted 6 has limitations that can easily be accommodated.

Similar words, different language as well......

It's still your guys fault for designing such good aeroplanes
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  #10  
Old 12-22-2018, 04:52 AM
Towline Towline is offline
 
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Well I've finally taken her upside down. I took it very gently on the first flight and filmed from a couple of angles on the second.

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