Helicopters C

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bernard
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Helicopters C

Postby bernard » August 31st, 2017, 12:20 pm

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Re: Helicopters C

Postby Unome » September 5th, 2017, 7:15 am

Hype for Chinook bonus? :P
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Re: Helicopters C

Postby Private Wang Fire » September 5th, 2017, 7:22 am

Chinook bonus is back! The multiplier is a bit less than last time, but a chinook that flies for a little over a minute would still beat most of last years' coaxial times from nats.

The marker bonus is confusing:
A bonus of 10% of the flight time will be added to the flight time of a helicopter that has that has the surface of at least one blade between the leading and trailing edges and between the the leading and trailing edges and between the outermost and next inboard rib on each rotor marked with a black marker or covered with black tissue. If no ribs are present, the whole surface must be black.

What constitutes "marking" with a black marker? Is putting a small line or dot enough to get the bonus...?
Last edited by Private Wang Fire on September 5th, 2017, 7:48 am, edited 1 time in total.
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Re: Helicopters C

Postby bernard » September 5th, 2017, 7:47 am

Private Wang Fire wrote:Chinook bonus is back! The multiplier is a bit less than last time, but a chinook that flies for a little over a minute would still beat most of last years' coaxial times from nats.

The marker bonus is confusing:
A bonus of 10% of the flight time will be added to the flight time of a helicopter that has that has the surface of at least one blade between the leading and trailing edges and between the the leading and trailing edges and between the outermost and next inboard rib on each rotor marked with a black marker or covered with black tissue. If no ribs are present, the whole surface must be black.

What constitutes "marking" with a black marker? Is putting a small line or dot enough to get the bonus...?

You should color the entire surface described in the rule.
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Re: Helicopters C

Postby daydreamer0023 » September 5th, 2017, 8:53 am

The new time bonus for getting to prewind quickly seems interesting. Wonder how many teams would have gone over time in the previous season with prewinding - I know we probably did.
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Re: Helicopters C

Postby Rezalis » September 5th, 2017, 12:24 pm

Can someone explain to me the chinook bonus, please? The rules say, "Teams with a helicopter with non-coaxial rotors whose axes of rotation are separated by at least the radius of the rotors (e.g., Chinook or Piasecki style) must have their recorded flight time multiplied by 2.5 for scoring purposes." (2018 SciOly Rules). Does that mean if you build a chinook you get 2.5 multiplied to the time score? For example, 1minute = 2.5minutes if chinook?
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Re: Helicopters C

Postby Unome » September 5th, 2017, 12:30 pm

Rezalis wrote:Can someone explain to me the chinook bonus, please? The rules say, "Teams with a helicopter with non-coaxial rotors whose axes of rotation are separated by at least the radius of the rotors (e.g., Chinook or Piasecki style) must have their recorded flight time multiplied by 2.5 for scoring purposes." (2018 SciOly Rules). Does that mean if you build a chinook you get 2.5 multiplied to the time score? For example, 1minute = 2.5minutes if chinook?

It's exactly that, hence why it's so valuable. Creating a Chinook that flies is very difficult (though I would argue, not quite as difficult as that bonus implies - in 2012 the Nationals winner had a Chinook that flew for over 3 minutes).
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Re: Helicopters C

Postby coachchuckaahs » September 5th, 2017, 2:58 pm

Since a chinook design would have two rubber motors, it would seem that you would almost certainly forego the 5% bonus on prep time, but trading for a 2.5X kicker, probably worth it. Perhaps both team members need to wind in tandem!

Any thoughts as to when they start the pre-flight timing? Will they give a chance to get to the winding table, or will space near check-in be at a premium? (Same issue in Wright Stuff). I would hope the team can carefully take their flying machines to their tables before time starts, but I suspect they will start as soon as weigh-in is complete.

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Re: Helicopters C

Postby bernard » September 5th, 2017, 3:00 pm

coachchuckaahs wrote:Since a chinook design would have two rubber motors, it would seem that you would almost certainly forego the 5% bonus on prep time, but trading for a 2.5X kicker, probably worth it. Perhaps both team members need to wind in tandem!

Any thoughts as to when they start the pre-flight timing? Will they give a chance to get to the winding table, or will space near check-in be at a premium? (Same issue in Wright Stuff). I would hope the team can carefully take their flying machines to their tables before time starts, but I suspect they will start as soon as weigh-in is complete.

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I've seen a Chinook I believe ran on a single motor, constructed by Roy White.
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Re: Helicopters C

Postby daydreamer0023 » September 5th, 2017, 3:07 pm

bernard wrote:
coachchuckaahs wrote:Since a chinook design would have two rubber motors, it would seem that you would almost certainly forego the 5% bonus on prep time, but trading for a 2.5X kicker, probably worth it. Perhaps both team members need to wind in tandem!

Any thoughts as to when they start the pre-flight timing? Will they give a chance to get to the winding table, or will space near check-in be at a premium? (Same issue in Wright Stuff). I would hope the team can carefully take their flying machines to their tables before time starts, but I suspect they will start as soon as weigh-in is complete.

Coach Chuck

I've seen a Chinook I believe ran on a single motor, constructed by Roy White.


Yup, link's here: https://www.youtube.com/watch?v=tWWpXVMFwWw
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Re: Helicopters C

Postby coachchuckaahs » September 5th, 2017, 3:32 pm

Thanks, that is a neat design!

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Re: Helicopters C

Postby mjcox2000 » September 5th, 2017, 6:58 pm

What's the point of 5.d. (the coloring bonus)? It seems like an odd thing to give a bonus for - it seems easy enough to do and probably would add a negligible amount of mass. Does anyone see the logic behind adding that bonus?

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Re: Helicopters C

Postby bernard » September 5th, 2017, 7:15 pm

mjcox2000 wrote:What's the point of 5.d. (the coloring bonus)? It seems like an odd thing to give a bonus for - it seems easy enough to do and probably would add a negligible amount of mass. Does anyone see the logic behind adding that bonus?

It awards teams that take time to mark their helicopters so they are more visible mid-flight, without penalizing those who do not do it. If it were not a bonus, teams without colored blades would have construction violations.
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Re: Helicopters C

Postby mjcox2000 » September 5th, 2017, 7:24 pm

Have there been issues before with inadequately visible helicopters, or was this incentive for marking blades created out of the blue?

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Re: Helicopters C

Postby ScottMaurer19 » September 5th, 2017, 7:28 pm

mjcox2000 wrote:Have there been issues before with inadequately visible helicopters, or was this incentive for marking blades created out of the blue?

This is similar to a bonus in wright stuff last year so not entirely new. I'm not sure where it originates.
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