cheema Posted October 12, 2010 Share Posted October 12, 2010 T56-A-15 engine. How does throttle changes the blade angle in thr ground range. Request max details. Quote Link to comment Share on other sites More sharing options...
NATOPS1 Posted October 12, 2010 Share Posted October 12, 2010 Easy answer... Throttle movement causes the valve housing to schedule speed (rpm) and Blade angle. Once the blade angle has moved the required amount, the valve housing tells the blades to stop moving. Hard answer... Throttle actuation moves the coordinator to change the fuel schedule and move the alpha shaft in the valve housing. On the Alpha shaft is the SPEED SET cam, (below flight idle) it rotates which increases the speeder spring tension disabling the flyweight’s effect on the governor. (Flyweights are used for constant speed operation.) Also on the ALPHA shaft is the BETA SET cam which moves the pilot valve to effect the blade angle change. During the blade angle change the BETA feedback causes the BETA shaft to turn which re-centers the pilot valve and stops blade movement at the selected (throttle) position. Quote Link to comment Share on other sites More sharing options...
Gmon Posted October 12, 2010 Share Posted October 12, 2010 Where is that picture/diagram from? page 68 of what? Quote Link to comment Share on other sites More sharing options...
cheema Posted October 13, 2010 Author Share Posted October 13, 2010 beautiful picture and explanation. Thanks a million. Quote Link to comment Share on other sites More sharing options...
NATOPS1 Posted October 15, 2010 Share Posted October 15, 2010 Pg 68 of a student guide I made for Navy and Marine classes. The original is from a book then modified to show and tell the important parts... feel free to use as you desire (except to sue me)... Glad you like and it helped...thats what I'm here for.. dosent do me any good to keep what Ive learned over the last 28 years to myself... Quote Link to comment Share on other sites More sharing options...
Azhar Posted March 23, 2022 Share Posted March 23, 2022 Sir please share that book, I'm very thankful.. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.