REFLECTOR: Speed brake usage question
David Scharfenberg
dave at winco.net
Tue Nov 9 23:20:45 CST 2004
Scott,
What limits the speed brake extension to 110 kts? What would be the
speed limitation for a partial extension, say 50%?
Thanks,
Dave Scharfenberg
on 11/8/04 6:43 PM, Scott Baker at sbakr at comcast.net wrote:
> Velocity's main concern is the potential for the gear doors to depart and
> fly into the propeller. Unofficially, we have been using a V-gear down
> speed of 130knots on RG models; 125knots extension speed. RG models, with
> the gear doors removed, can be flown to Vne.
> SB
>
> ----- Original Message -----
> From: "Scott Derrick" <scott at tnstaafl.net>
> To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
> Sent: Monday, November 08, 2004 12:45 PM
> Subject: Re: REFLECTOR: Speed brake usage question
>
>
>> I wonder what the factory says about increasing the extension speed to 160
>> kias??? Is it really strong enough for continuos usage at that speed?
>>
>> That would make the brake a much more versatile tool.
>>
>> My fear is it eventually coming off, right into the prop!
>>
>> Scott
>>
>> At 07:44 AM 11/8/2004, you wrote:
>>> Dave,
>>>
>>> I've already done the test for you. One time at 160 IAS I hit a good
>>> bump that bumped my head on the ceiling. My shin bumped several toggle
>>> switches located at the bottom of the panel (not the best place for the
>>> switches), including the speed brake switch. At first I couldn't figure
>>> out why I lost 25kn of airspeed until I saw a few indicator lights on.
>>> The brake still works fine with no damage.
>>>
>>> John
>>> SGRE
>>>
>>> David Scharfenberg wrote:
>>>
>>>> The maximum airspeed for speed brake extension is 110, which is less
>>>> than the gear speed. On other planes I fly, the speed brakes can be
>>>> deployed at any speed. This helps on a quick decent and helps bleed
>>>> off speed for gear extension. I have been wondering if the airspeed
>>>> for partial speed brake extension would be more than the current 110
>>>> limit. This would make the speed brake more useful. Of course I know
>>>> who sets the actual limit on my plane, but don't really want damage
>>>> it doing the airspeed tests.
>>>>
>>>>
>>>> Dave Scharfenberg
>>>> std/RG
>>>
>>>
>>> _______________________________________________
>>> To change your email address, visit
>>> http://www.tvbf.org/mailman/listinfo/reflector
>>>
>>> Visit the gallery! www.tvbf.org/gallery
>>> user:pw = tvbf:jamaicangoose
>>> Check new archives: www.tvbf.org/pipermail
>>> Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
>>
>>
>> "Those who sacrifice freedom to get security, deserve neither."
>> - Benjamin Franklin
>>
>> _______________________________________________
>> To change your email address, visit
>> http://www.tvbf.org/mailman/listinfo/reflector
>>
>> Visit the gallery! www.tvbf.org/gallery
>> user:pw = tvbf:jamaicangoose
>> Check new archives: www.tvbf.org/pipermail
>> Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
>>
>
>
> _______________________________________________
> To change your email address, visit
> http://www.tvbf.org/mailman/listinfo/reflector
>
> Visit the gallery! www.tvbf.org/gallery
> user:pw = tvbf:jamaicangoose
> Check new archives: www.tvbf.org/pipermail
> Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
More information about the Reflector
mailing list