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Aviation Definition 1

This document discusses the performance of a twin engine aircraft during various phases of flight. It provides speed and climb gradient information for the gross takeoff segments, corrections for net takeoff performance, and notes items to consider during takeoff like field length. Cruise performance on one engine is given, as is approach and landing speeds for one engine inoperative. Regulations prohibiting takeoff in slush or snow are described. Thrust reduction levels for reduced thrust takeoffs are specified. The document also defines Q Feel and Spoiler Blow Back systems.

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Fahmi Prayogi
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142 views2 pages

Aviation Definition 1

This document discusses the performance of a twin engine aircraft during various phases of flight. It provides speed and climb gradient information for the gross takeoff segments, corrections for net takeoff performance, and notes items to consider during takeoff like field length. Cruise performance on one engine is given, as is approach and landing speeds for one engine inoperative. Regulations prohibiting takeoff in slush or snow are described. Thrust reduction levels for reduced thrust takeoffs are specified. The document also defines Q Feel and Spoiler Blow Back systems.

Uploaded by

Fahmi Prayogi
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as DOC, PDF, TXT or read online on Scribd
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Twin Engine Gross Segments

First segment Speed: V2 = 1.13 X Vs1g


Second segment Speed: V2 Climb Grad: 2.4%
Third segment Speed: Accelerate Climb Grad: 1.2%
Fourth segment Speed: 1.18 X Vs1g

Correction to Net segments; - 0.8%.

Improved Climb Gross Gradient: 5%.

Items to be considered on takeoff:

1.Field Length Limit


2.Climb Limit
3.MCG Limit
4.Vmbe
5.Tyre Limit Speed.

Pressure Altitude 3000 ft IAS 100 kts TAS 106 kts


0 IAS 100 kts TAS 104 kts

Take off acceleration in snow covered runway is slower due too Spray Impingement Drag
and Landing Gear Displacement Drag.

In addition, deceleration to stop also slower due too poor brake coefficient.

Regulation prohibits takeoff in runway with Slush depth more than 0.5 inch or 1.3 cm or
Dry Snow more than 2.36 inch or 6 cm, due too possibility of airplane damage by Spray
impingement on airplane structure.

Thrust reduction in Reduced thrust takeoff is not more than 25% of rates takeoff thrust.

During cruise in one engine inoperative the altitude gradient decrement from gross
altitude is – 1.1%.

Approach in one engine inoperative speed: 1.4 X Vs1g and climb gradient: 2.1%.

Landing speed: 1.23 X Vs1g and climb gradient: 3.2%

Touch Down speed: 0.93 X Vref.

Q Feel is a computer-based artificial feel system based on ½ RV* that felt by the pilot
through the control column and rudder pedals and used commonly on airplane with
powered flight controls.
The Q Feel inputs are:
1. Static and Dynamic Pressure
2. Control surface angle of deflection.

The Spoiler Blow Back, is the spoiler angle for a given input signal will decrease with an
increase of air speed or compressibility effect.

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