Exam (elaborations)
SIFT ARMY AVIATION INFORMATION PRACTICE EXAM
- Course
- Institution
SIFT ARMY AVIATION INFORMATION PRACTICE EXAM ...
[Show more]
Content preview
SIFT ARMY AVIATION INFORMATIONPRACTICE EXAM 2024-2025
A helicopter is often made up of a ______ (fill in the blank) with a ____ (fill in
the blank) jutting upward. - ANSWER: Fuselage (the craft's body), mast.
The craft's engine sends power upward through the ____ (fill in the blank) to the
rotor blades, which the pilot controls. - Mast's Answer
This main rotor generates ____ (fill in the blank). - ANSWER Thrust.
____ (fill in the blank) is balanced by a second rotor, usually a tail rotor, which
is designed to counteract the effects of ____. - ANSWER Thrust and Torque.
What are the two major types of aircraft? - ANSWER: Rotorcraft and Fixed
Wing.
The primary advantage of a helicopter over an airplane is its ability to take off
____ (fill in the blank). It may also ____ (fill in the blank). This means that
helicopters can take off and land in areas that planes cannot reach. They can
also drop cargo or troops into difficult places. - Hover and answer vertically.
What are the many helicopter types? - ANSWER: Single main rotor, tandem
rotor, and coaxial rotor.
This is the most typical helicopter design: a ____ (fill in the blank) rotor that
generates power, with a secondary rotor, such as a tail rotor, to counteract the
effects of torque. One downside of this design is that some of the power is used
to counteract ____ (fill in the blank), rather than for lift. - ANSWER: A single
main rotor with torque.
This helicopter's design includes two primary rotating blade sections: front and
rear. The torque is automatically offset since each set of blades rotates in the
opposite direction. Torque can be dealt with without the use of additional
measures like a tail rotor. As a result, the engine's full power can be employed
, for lifting. As a result, ____ (fill in the blank) helicopters are among the world's
fastest and most powerful. - Tandem Rotor Helicopter.
This type of helicopter has two sets of blades that rotate above and below each
other. The two sets of blades are attached on the same mast, although they rotate
in opposite directions. This has the advantage of decreasing ____ (fill in the
blank), resulting in increased freight and passenger capacity. - ANSWER:
Coaxial Rotor Helicopter, Payload.
The helicopter's engine (or engines) produces ____ (fill in the blank). It is set in
action by the ____ (fill in the blank) and ____. Sufficient ____ (fill in the blank)
is required to overcome the helicopter's drag and weight and propel it ahead. -
ANSWER: Mast and Rotors, Thrust.
____ (fill in the blank) is a force that works against push. Drag in helicopters
occurs when the shape and size of the aircraft disrupts the flow of air as it flies.
There are various forms of ____ (fill in the blank) that affect helicopters. Drag
is the answer.
What are the four types of drag? - ANSWER Profile drag, induced drag,
parasitic drag, and total drag.
____ (fill in the blank) is created by the frictional resistance of helicopter blades
in flight. - Drag the ANSWER Profile.
What are the two sub-components of Profile Drag? - ANSWER: Form drag and
skin friction.
____ (fill in the blank) increases in proportion to the helicopter's speed. - Drag
the ANSWER Form.
____ (fill in the blank) is created by microscopic roughness on the helicopter
blades. Any roughness on the surface traps air, increasing drag. - ANSWER:
Skin friction.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller luzlinkuz. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $11.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
72964 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now