The official aviation quiz topic!

MD-11 · Post by **MD-11** » 30 Sep 2005, 20:10

*The coanda effect is the tendency of a stream to stay attached to a convex surface instead of following a straight line in its original direction.
*The Antonov An-72 "coaler"

Andries · Post by **Andries** » 01 Oct 2005, 12:02

Correct.

The coanda effect will give the aircraft a larger upwards force, giving the aircraft STOL capabilities.

Your turn again MD-11 !

Greetz,

Andries

MD-11 · Post by **MD-11** » 01 Oct 2005, 16:34

What's the fan diameter of the CF6-80E1 engine ( used in the MD-11 and B744 and other wide-bodies ) , in millimeters?

Avro · Post by **Avro** » 01 Oct 2005, 16:38

2896 ?

MD-11 · Post by **MD-11** » 03 Oct 2005, 19:03

HorsePower · Post by **HorsePower** » 03 Oct 2005, 21:19

Hi MD-11,

Just drop a line to say the B744 is fitted with CF6-80C2B1, not CF6-80E1

!

Seb.

Andries · Post by **Andries** » 03 Oct 2005, 21:56

96 inch diameter

2438,4 mm

Greetz,

Andries

MD-11 · Post by **MD-11** » 04 Oct 2005, 10:21

I'll take that as a sufficient answer.
What a coincidence this engine was at the SNBA opendoors

According to what I found on the web this one is also used on B744s.

Andries · Post by **Andries** » 04 Oct 2005, 19:46

I would like to know the nominal tirepressure for the NLG and MLG of a A300B4-203 (like the ones DHL uses). Give me tha answer in PSI (Pound Square Inch)

Greetz,

Andries

realplaneshaveprops · Post by **realplaneshaveprops** » 05 Oct 2005, 21:25

NLG +/- 160 psi
MLG +/- 180 psi

Koen

Andries · Post by **Andries** » 05 Oct 2005, 21:35

At 160PSI NLG, the tirepressue would be to high.
At 180PSI MLG, the tire should be inflated ...

So with some adjustments you could find the correct answer.

Greetz,

Andries

realplaneshaveprops · Post by **realplaneshaveprops** » 06 Oct 2005, 10:34

NLG 150 psi
MLG 200 psi

Koen

Andries · Post by **Andries** » 06 Oct 2005, 11:24

realplaneshaveprops wrote:NLG 150 psi
MLG 200 psi

Koen

I will take these as correct because they are pretty close to the real ones.

NLG 139-147 PSI
MLG 185-194 PSI

Your turn Koen !

Greetz,

Andries

realplaneshaveprops · Post by **realplaneshaveprops** » 06 Oct 2005, 23:27

What is the fuel flow of the LF507-1F of the RJ85/100 (liters plz) in take-off and cruise setting.

Easy for visitors of the SNBA Opendoor!

Greetz
Koen

realplaneshaveprops · Post by **realplaneshaveprops** » 11 Oct 2005, 14:56

Come on, this can't be that hard! Just give it a try

Greetz

Koen

Avro · Post by **Avro** » 11 Oct 2005, 15:01

I searched a little bit and didn't found the answer sorry....

Chris

realplaneshaveprops · Post by **realplaneshaveprops** » 11 Oct 2005, 20:31

Here are the answers:
Take off: 1200l/h
Cruise: 700 l/h

Avro, can you ask the next question?

Koen

Avro · Post by **Avro** » 11 Oct 2005, 21:31

realplaneshaveprops wrote:Here are the answers:
Take off: 1200l/h
Cruise: 700 l/h

Avro, can you ask the next question?

Koen

Thanks for the answer.

As for the new question. I don't know why I should ask a new one since I didn't answer. But if you insist

Tell me the function of vertical fences on wings ?

On the follwoing picture you can clearly see two fences on the wing: http://www.airliners.net/open.file/937545/L/

Chris

MD-11 · Post by **MD-11** » 12 Oct 2005, 13:18

Better aerodynamics? Less drag?

realplaneshaveprops · Post by **realplaneshaveprops** » 12 Oct 2005, 15:44

To reduce the airflow on top of the wing to flow towards the fuselage, and under the wing from flowing towards the wingtip. These airflows create the wingtip-vortex!

Example of a wing fences:
Dassault Falcon 20 http://www.airliners.net/open.file/471161/L

The part of the wing outside the wingfences is the droop leading edge.

Koen