|
-
POSTING RULES

-
Donate yearly (please).
-
Advertise in here!
-
Today's Posts
|
Insert Pics
|

04-30-2014, 05:24 PM
|
 |
|
|
Join Date: Jul 2006
Location: Midland, MI
Posts: 13
|
|
Slow Roll
|

04-30-2014, 05:55 PM
|
|
|
|
Join Date: Apr 2008
Location: Lake Havasu City AZ
Posts: 2,393
|
|
barrel rolls
There are at least two different styles of barrel rolls. The IAC barrel roll, which used to be a Sportsman only maneuver, IIRC was a 45 degree change of heading, returning to the original heading at the finish. The roll and heading change were blended, with both roll and heading change constantly changing. I have always HEARD that the military style was a 90 degree change of heading but never saw anything to prove this. I always did the "military style" with heading and bank angle constantly changeing, same as IAC style except the heading change.
The IAC style was discontinued many years ago.
Tex Johnson rolled the very first 707 at a fairly low altitude over the hydroplane races near Seattle. I don't think he got in much trouble. Publicly he had to be reprimanded. Privately it probably sold a lot of airplanes which Boeing was very happy about.
Clay Lacy will be performing in the Chino Airshow Sat and Sun in the Lear 24The Late Bobby Younkin did a very impressive low level airshow in the Lear 23.
|

04-30-2014, 06:30 PM
|
|
|
|
Join Date: Feb 2014
Location: lake oswego, OR
Posts: 161
|
|
I used to practice "boxes" as well, slip the nose horizontally across the top of the box, stop, drop vertically down the side, stop, slip back across the bottom..... too many can make you sick, so beware. this exercise really engrains the stick and rudder movements to the view outside.
__________________
RV-6A 1500+hrs since 1997
O-320 D2J, FP, slo-bld
49 states, Bahamas, Canada
2014 - PAID
|

04-30-2014, 07:47 PM
|
 |
|
|
Join Date: Jan 2007
Location: Daleville, AL
Posts: 343
|
|
RV competition roll
Can't help it, but had to show a competition roll in an RV. It's this year's Primary sequence and the roll occurs at the end of the video clip. Let Eric be the judge, but I think the roll would score a 8.5. I do have an inverted system.
http://www.youtube.com/watch?v=fWce9wtHZVI
Bill McLean
RV-4
lower Alabama
|

04-30-2014, 10:28 PM
|
 |
|
|
Join Date: Oct 2011
Location: North Bend, Wa
Posts: 75
|
|
Quote:
Originally Posted by WillyEyeBall
Can't help it, but had to show a competition roll in an RV. It's this year's Primary sequence and the roll occurs at the end of the video clip. Let Eric be the judge, but I think the roll would score a 8.5. I do have an inverted system.
http://www.youtube.com/watch?v=fWce9wtHZVI
Bill McLean
RV-4
lower Alabama
|
I think Eric would say you did pretty good. Looks good to me, but I'm still a rookie too. I do love doing slow rolls. I like to do them really slow. Lots of fun.
__________________
Doug
1947 Stinson 108-2
Steen Skybolt
|

05-01-2014, 06:21 AM
|
 |
|
|
Join Date: Jan 2006
Location: New Smyrna Beach, FL
Posts: 1,339
|
|
Quote:
Originally Posted by Sid Lambert
Just so we are clear. And this stands for all aircraft, pilots and never expires...
There are 4 types of rolls.
Snap - Performed with a swift pull if the stick and a swift kick of rudder.
Barrel - Coordinated roll with a 90 degree direction change at the top of the maneuver.
Aileron - Any positive G roll that is not a barrel or snap.
Slow - A coordinated roll with no change in altitude or heading. Requires 1 negative G and 1 positive.
Agree? Good. 
|
Agree!!!!!!!!
__________________
David Maib
RV-10 N380DM
New Smyrna Beach, FL
VAF Paid 1/21/2020
"In '69 I was 21, and I called the road my own"
Jackson Browne
|

05-01-2014, 12:01 PM
|
 |
|
|
Join Date: Mar 2006
Location: Gilbert, AZ
Posts: 1,628
|
|
Quote:
Originally Posted by Sid Lambert
Just so we are clear. And this stands for all aircraft, pilots and never expires...
There are 4 types of rolls.
Snap - Performed with a swift pull if the stick and a swift kick of rudder.
Barrel - Coordinated roll with a 90 degree direction change at the top of the maneuver.
Aileron - Any positive G roll that is not a barrel or snap.
Slow - A coordinated roll with no change in altitude or heading. Requires 1 negative G and 1 positive.
Agree? Good. 
|
Well, NO! Look again at post #6. As far at the IAC is concerned there are only two: aileron rolls and snap rolls. You can mix it up a bit and do 4-point or 8-point aileron rolls, half rolls, etc. As well as upright and inverted snap rolls (the latter not recommended in your RV!) and vertical snaps, double snaps, half snaps, etc. But, again there are only two basic types of rolls in IAC competition. Outside of IAC call them whatever you want.
Regarding post #6: I learned long ago that one does not argue with Eric Sandifer on any subject within the realm of aerobatics. Eric is an IAC judge and one mighty fine aerobatic pilot.
__________________
Ron Schreck
IAC National Judge
RV-8, "Miss Izzy", 2250 Hours - Sold
VAF 2021 Donor
|

05-01-2014, 12:45 PM
|
|
|
|
Join Date: Jan 2007
Location: AOTP
Posts: 192
|
|
Quote:
Originally Posted by Sid Lambert
There are 4 types of rolls.
Snap - Performed with a swift pull if the stick and a swift kick of rudder.
Barrel - Coordinated roll with a 90 degree direction change at the top of the maneuver.
Aileron - Any positive G roll that is not a barrel or snap.
Slow - A coordinated roll with no change in altitude or heading. Requires 1 negative G and 1 positive.
Agree?
|
You forgot Onion, Kaiser, and Dinner. 
__________________
Nauga
2004 RV-4
|

05-01-2014, 05:37 PM
|
|
|
|
Join Date: Jul 2005
Location: North Atlanta
Posts: 1,120
|
|
You're voted off the island Ron! Too serious.
Quote:
Originally Posted by ronschreck
Well, NO! Look again at post #6. As far at the IAC is concerned there are only two: aileron rolls and snap rolls. You can mix it up a bit and do 4-point or 8-point aileron rolls, half rolls, etc. As well as upright and inverted snap rolls (the latter not recommended in your RV!) and vertical snaps, double snaps, half snaps, etc. But, again there are only two basic types of rolls in IAC competition. Outside of IAC call them whatever you want.
Regarding post #6: I learned long ago that one does not argue with Eric Sandifer on any subject within the realm of aerobatics. Eric is an IAC judge and one mighty fine aerobatic pilot.
|
__________________
Sid Lambert
RV-7 Sold
RV-4 - Flying - O-320 Fixed Pitch - Red over Yellow
|

07-18-2015, 10:28 PM
|
|
|
|
Join Date: Oct 2014
Location: Metamora, Michigan
Posts: 209
|
|
Interesting subject
Never thought about all the names given to different types of rolls till I read this thread. I thought I would add a few comments.
Snap rolls used to be called flick rolls, might be a British thing. Snap rolls stall the wing with aggressive rudder and aft or forward stick. Gyroscopic forces exceed the G forces and I only do these in an approved aerobatic aircraft..
Barrel rolls are a positive G maneuver. I too have heard the 90 degree heading change at inverted version as the military barrel roll. IAC competition allowed barrel rolls in aerobatic sequences. The IAC version was a 30 degree heading change at inverted. I used one in a free style sequence one year as a cross wind maneuver to offset drift in the box. Judges were not consistent in judging it so I discontinued its use. (Early 80's). Bob Hoover poured the ice tea while doing a barrel roll and there is a video on YouTube. I talked to him about doing it and he said the hard part was pouring backhanded so the camera could see it. When giving aerobatic rides I used to balance something on my head to demonstrate coordination during a loop, wing over and a barrel roll.
Someone mentioned doing the boxes. I would use this maneuver in aerobatic training. Draw a box with the nose of the airplane while keeping the wings level. Lots of cross control and good practice. Another version is to draw figure 8's.
Aileron roll, slow roll, axial roll. In my world these always meant the same thing. Rolling the airplane on the longitudinal axis. If horizontal, it would be as was described here earlier, using all three controls to maintain a constant roll rate, constant altitude and constant path of flight. Stopping at points such as every 90 degrees would then be a four point roll, etc.
Dutch rolls or coordination exercises are a great tool to keep your feet working. Keep the nose on a point and roll back and forth, AND keep the ball centered. Stop on the points of max angle and horizontal momentarily for a little more fun. Also, put your feet on the inside two pedals (reversed rudder) and try it. Even more fun!
All this improves your coordination and skills. Great fun! Now about those 4 point hammerheads...
__________________
John von Linsowe
Michigan
RV-7
Cessna 140
Last edited by von_flyer : 07-18-2015 at 10:30 PM.
|
| Thread Tools |
Search this Thread |
|
|
|
| Display Modes |
Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
All times are GMT -6. The time now is 06:44 AM.
|