Westland and the Attack Helicopter

overscan (PaulMM)

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Research paper published in The Journal of Aeronautical History by Dr R V Smith FRAeS and J P Graham FRAeS on Westland and the Attack Helicopter - from Lynx to Apache.

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This is a great free addition to the recently released Project Tech book.
 
Just printed the pdf paper, will read it at my leisure, from what I have read online so far it is highly interesting and contains pictures that I have never seen before. Thanks for posting the link overscan.
 
Additional comments by Paul Chapman.

British Aircraft of Prototype / Experimental and Proposed Designs Only.
Good paper ... Dave Humpherson and I joined Westland's FPO in the spring of 1984. We had come out of the Warton APO so were very much fast jet specialists rather than rotary wingers. I brought a lot of experience in design synthesis and optimisation which went into the nascent performance and synthesis work that had been started by Ron. When the A129 LAH work started I was Ron's sidekick as assistant chief design engineer responsible primarily for the sizing and performance work...that continued to the NH90 and various other projects. I preferred the engineering and computational challenges while Ron was very much the leader and politician. When Ron left I picked up as HoFP which led on to NATO NIAG SG.30 FLBH and various other entertainments, including the Canadian EH101 SAR that ended up as the Cormorant. Then during the AH programme I took leadership of the OA volume of the Apache bid which was interesting as a cat/mouse exercise with Ron who was on the BAE/Eurocopter team. I left in 1997 just as we finished a fairly extensive Lynx Development feasibility study but a few weeks later there was an interesting negotiation that led to my return exactly a year after I had left. The sabbatical was spent on the supersonic transport project which, while going nowhere, was quite entertaining. ... interesting to see Ron's note that I ran the WG.47...memory plays tricks. I think we were juggling a lot of balls at that time and I chipped in the best I could as we finally got the synthesis code working properly. The WG.47....yes there was a lot of fun with the observables and also sorting out single and twin variants.
Just read the paper more thoroughly. There is an error re the A129LAH. We carried out a design exercise of single vs twin engine variants and which formed a sizeable appendix to one of the final reports (did not change the price of fish though). The paper peters out after Ron left for BAe and Jerry moved upwards and onwards from Advanced Engineering since there were some significant studies for complementary platforms to operate with the AH. And then the AH procurement competition was something else.
125217592_3390986577603788_2467476770727404237_o.jpg
I just found this....The paper by Ron and Jerry says that we did not examine single engine options for the A129LAH....well, we did! I did most of the work and we dreamt up several variations on the theme. It was a single vs twin engine study....and having been heavily involved in the single engine P106 canard delta at Warton I wanted to see if the advantages applied to helicopters. Despite trying hard to make a case it was pretty obvious that, with the basic platform, it wasn't going to happen. But I had a lot of fun with the dead man's curve and engine failed modelling! Tom Abbott did the drawings...all I did was to nudge his elbow.
 
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Hi, Paul - that obviously fell through the old age plug hole of my memory. Jerry will be in touch ... Ron
 
Sadly, Paul Chapman doesn't seem to be a member, he posts on a Facebook Group here:


I'm copying his comments here as I think they are interesting. It'd be nice for him to join....
 
Additional comments by Paul Chapman.

British Aircraft of Prototype / Experimental and Proposed Designs Only.
Good paper ... Dave Humpherson and I joined Westland's FPO in the spring of 1984. We had come out of the Warton APO so were very much fast jet specialists rather than rotary wingers. I brought a lot of experience in design synthesis and optimisation which went into the nascent performance and synthesis work that had been started by Ron. When the A129 LAH work started I was Ron's sidekick as assistant chief design engineer responsible primarily for the sizing and performance work...that continued to the NH90 and various other projects. I preferred the engineering and computational challenges while Ron was very much the leader and politician. When Ron left I picked up as HoFP which led on to NATO NIAG SG.30 FLBH and various other entertainments, including the Canadian EH101 SAR that ended up as the Cormorant. Then during the AH programme I took leadership of the OA volume of the Apache bid which was interesting as a cat/mouse exercise with Ron who was on the BAE/Eurocopter team. I left in 1997 just as we finished a fairly extensive Lynx Development feasibility study but a few weeks later there was an interesting negotiation that led to my return exactly a year after I had left. The sabbatical was spent on the supersonic transport project which, while going nowhere, was quite entertaining. ... interesting to see Ron's note that I ran the WG.47...memory plays tricks. I think we were juggling a lot of balls at that time and I chipped in the best I could as we finally got the synthesis code working properly. The WG.47....yes there was a lot of fun with the observables and also sorting out single and twin variants.
Just read the paper more thoroughly. There is an error re the A129LAH. We carried out a design exercise of single vs twin engine variants and which formed a sizeable appendix to one of the final reports (did not change the price of fish though). The paper peters out after Ron left for BAe and Jerry moved upwards and onwards from Advanced Engineering since there were some significant studies for complementary platforms to operate with the AH. And then the AH procurement competition was something else.
View attachment 644332
I just found this....The paper by Ron and Jerry says that we did not examine single engine options for the A129LAH....well, we did! I did most of the work and we dreamt up several variations on the theme. It was a single vs twin engine study....and having been heavily involved in the single engine P106 canard delta at Warton I wanted to see if the advantages applied to helicopters. Despite trying hard to make a case it was pretty obvious that, with the basic platform, it wasn't going to happen. But I had a lot of fun with the dead man's curve and engine failed modelling! Tom Abbott did the drawings...all I did was to nudge his elbow.
Paul, this will be corrected shortly. Jeremy will also be in touch.
 
Being a jet jock you performed a single vs twin study, had you been in helicopters you would not have even started… In any case I do not remember reading that part… age probably. I had one of the drawings in the picture framed, it’s in my house.
 
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