engineering design day 2012 - College of Engineering @ The ...

24
AIRCRAFT ThRuST RECoVERY VALVE (TRV)
Interdisciplinary Engineering Design Program
CLASS
ENGR 498A/B
SpoNSoR
Honeywell Aerospace
SpoNSoR mENToR/ADVISoR
Darrell Horner
pRoJECT mENToR
Kevin H. Prodromides
TEAm mEmBERS
Ahmed Al Salman (ME)
Christopher Grusenmeyer (AE/ME)
Patrick Joyce (ME)
Jeffrey Pyne (ME)
Bradley Warner (ME)
Jing Yang (ME)
AE = Aerospace Engineering
ME=Mechanical Engineering
TEAm 4873: pRoJECT SummARY
For commercial flight, internal cabin
pressure of an aircraft must be
controlled. Compressed air is taken
from the engines and distributed
through the cabin. The air then
exits through a thrust recovery
valve (TRV) in order to maintain the
cabin pressure. Current TRV designs
at Honeywell Aerospace have a
modified butterfly valve that utilizes
two doors, that move in parallel to
create a nozzle that accelerates
the air flow to supersonic velocities. This creates a small amount of thrust that
helps the aircraft to recover some of the energy lost to the cabin pressure control
system. This project aims to improve the linkage, hinge, noise, leakage, and
nozzle of a previous model to a production quality design. To do this, the valve
must withstand the force of a pressure differential without mechanically failing.
Additionally, the valve must leak no more than 0.5 lb/min in the fully closed position.
The valve must accelerate the flow exiting the nozzle to supersonic speeds. Due to
the commercial application of the valve, no audible tones must be produced. The
valve must be capable of opening to the full effective area allowing for the maximum
mass flow rate for the given dimensions. Ultimately, this project should produce an
aerospace quality prototype valve to potentially replace existing models.