Did you know that registration to Fighter Control is completely free and brings you lots of added features? Find out more....
Performance take offs
Performance take offs
Hi all,
Just a quick question for those in the know.
What is the reason for Typhoons doing performance take offs from Coningsby, (not QRAs),and why are they only carried out occasionally?
Just a quick question for those in the know.
What is the reason for Typhoons doing performance take offs from Coningsby, (not QRAs),and why are they only carried out occasionally?
Regards,
Steve.
Steve.
- Ghastly Whisper
- Posts: 1115
- Joined: Sun Oct 04, 2009 5:43 pm
Re: Performance take offs
One reason is they are giving someone a back seat ride.
Re: Performance take offs
And to avoid overflying villages so get up quick noise soon goes
Re: Performance take offs
Not in the local area but its not overflying villages 3 or 4 miles away
Re: Performance take offs
Presumably, pilots need to practice all aspects of operational performance. So a QRA call would not be the first time.
I think I have read somewhere that a full burner performance take off does increase engine maintenance cost, particularly on blade coatings and almost certainly increases airframe stress. So it would not be "normal".
I think I have read somewhere that a full burner performance take off does increase engine maintenance cost, particularly on blade coatings and almost certainly increases airframe stress. So it would not be "normal".
Re: Performance take offs
The 41 Sqn special did it today, and kept on going in burner till he was a wee spot in the sky. Several other single seaters also did it, so I would suspect currency as one also popped his chute on return.
Re: Performance take offs
Thanks. That makes a lot of sense now.martmpf wrote: ↑Tue May 22, 2018 9:26 pmPresumably, pilots need to practice all aspects of operational performance. So a QRA call would not be the first time.
I think I have read somewhere that a full burner performance take off does increase engine maintenance cost, particularly on blade coatings and almost certainly increases airframe stress. So it would not be "normal".
Regards,
Steve.
Steve.
- Ghastly Whisper
- Posts: 1115
- Joined: Sun Oct 04, 2009 5:43 pm
Re: Performance take offs
yea, was very tired and it seemed funny at the time, sorry
Growing old disgracefully
- Ghastly Whisper
- Posts: 1115
- Joined: Sun Oct 04, 2009 5:43 pm
Re: Performance take offs
I dont see how that is possible, lighting the burners is a normal operation, the fan blades dont care if the burners are lit or not. The airframe itself is designed to take a lot more punishment than a performance take off. We are talking about an aircrafty that routinely pulls a lot of G. The limiting factor is the seat to stick interface.martmpf wrote: ↑Tue May 22, 2018 9:26 pmPresumably, pilots need to practice all aspects of operational performance. So a QRA call would not be the first time.
I think I have read somewhere that a full burner performance take off does increase engine maintenance cost, particularly on blade coatings and almost certainly increases airframe stress. So it would not be "normal".
Growing old disgracefully
Re: Performance take offs
One(Two?) of the primary life ratings for engines is/are full power cycles and duration. After each Typhoon flight, data is downloaded from the pilots 'brick' into a maintainance system which analyses all the key parameters recorded during the flight. Longer in reheat = lower engine life. If the pilots 'brick' fails, then the aircraft gets grounded till the data can be extracted and decoded from the aircrafts crash recorder. This can take several days.Ghastly Whisper wrote: ↑Wed May 23, 2018 6:27 amI dont see how that is possible, lighting the burners is a normal operation, the fan blades dont care if the burners are lit or not. The airframe itself is designed to take a lot more punishment than a performance take off. We are talking about an aircrafty that routinely pulls a lot of G. The limiting factor is the seat to stick interface.martmpf wrote: ↑Tue May 22, 2018 9:26 pmPresumably, pilots need to practice all aspects of operational performance. So a QRA call would not be the first time.
I think I have read somewhere that a full burner performance take off does increase engine maintenance cost, particularly on blade coatings and almost certainly increases airframe stress. So it would not be "normal".
One of the findings of the investigation when a Qantas 747 ran off the end of the runway in Singapore (or was it Malaysia) was that company rules were partly responsible because they said pilots were to avoid using reverse thrust on landing wherever possible because it uses a high power cycle which therefore reduces engine life, and hence costs.
-
- Posts: 548
- Joined: Wed Sep 03, 2014 9:51 am
- Location: Severn valley, South Shropshire
Re: Performance take offs
I can understand that it will shorten the life of the reheat, tailpipe and nozzle components, but why would it affect the engine itself? Are 'non-reheat' take offs conducted at less than full power on the engine core...?
Re: Performance take offs
Why do some folk get a raging hard-on about seeing a so called "performance take off" , and then have to post that they've seen one?
No one gets out of life alive.
Equipment: Camera, Lens, Goretex Y fronts
Equipment: Camera, Lens, Goretex Y fronts
- reheat module
- Posts: 2910
- Joined: Sun Oct 04, 2009 4:59 pm
- Location: Often UK
Re: Performance take offs
I seem to recall a similar question to the original post being asked before; I think(?) the reply given is that it was part of the Student's Training profile, and at a set part in the syllabus, the PTO was included in the schedule.
UK ONS CPI Rate checker for Sept every year...
Re: Performance take offs
A performance take off is flight 2? in the training syllabus i believe, to show the student pilot the outright performance of the jet.
Obviously once qualified pilots have to keep current so you do see them from time to time, plus they happen for other operational reasons, such as when the Typhoons were stationed at Northolt for the Olympics due to runway length and populated surrounding area.
Tuesday seem's to be the most common day for it.
I once saw a flight of three 29sqd jets go up, all doing performance take offs. That was a nice sight!
Mike
Obviously once qualified pilots have to keep current so you do see them from time to time, plus they happen for other operational reasons, such as when the Typhoons were stationed at Northolt for the Olympics due to runway length and populated surrounding area.
Tuesday seem's to be the most common day for it.
I once saw a flight of three 29sqd jets go up, all doing performance take offs. That was a nice sight!
Mike
Re: Performance take offs
Uses a lot of fuel.
Austerity you know.
Austerity you know.
MISSING - x1 Air Force.
If found please return to the UK.
If found please return to the UK.
Re: Performance take offs
Reheat take-offs use max engine rpm, which increases turbine inlet temperature, turbine temp, combustion temp, heat and wear of all bearings/moving components etc, and a host of other engine wear parameters, all of which reduces engine life between major overhauls...Seahornet1 wrote: ↑Wed May 23, 2018 9:28 amI can understand that it will shorten the life of the reheat, tailpipe and nozzle components, but why would it affect the engine itself? Are 'non-reheat' take offs conducted at less than full power on the engine core...?
-Dazza
I rock, you don't...
Who is online
Users browsing this forum: Snoop 95 and 61 guests