I completed the PA series.
Here we go to figure out,what's the PV,PD,PH & V sequence would be;
PV-1 was to demonstrate new ideas and a unique anti-torque system with a fan blowing air through
the tail cone, turned by control vanes in the exit,1943
PV-2 was a single seat experimental helicopter,it brought several new features such as the first dynamically
balanced rotor blades, a rigid tail rotor with a tension-torsion pitch change system, and a full cyclic and
collective rotor pitch control
PV-3 was a US Navy XHRP-X DOGSHIP , HRP-1 RESCUER rescue helicopter dubbed "Flying Banana",first
tandem rotor design,crew of two and eight passenger,powered by one 600 shp Pratt & Whitney R-1340-
AN-1 radial engine
PV-4 to PV-7 ------?
PV-8 ? may it was a large tandem rotor helicopter,based on PV-3,and could be powered by two engines
PV-9 was a two-seat long range flying crane helicopter project,also with tandem rotor,powered by Two
Allison GMC Model V-1710-"G' 12 cylinder, liquid cooled aircraft engines
PV-10 ? may was a tandem rotor helicopter project,a small version of PV-3,with crew of two and four
passenger
PV-11 was a utility helicopter developed from PV-2 for USN
PV-12 was a large version of PV-14 for USN, project only
PV-13 could be not used
PV-14 was a US Navy XHJP-1 utility helicopter,powered by one 550 shp Continental R-975-46A 9-cylinder
air-cooled radial piston engine
PV-15 was a large tandem rotor heavy transport helicopter YH-16,powered by two 2100 shp Allison T56-A-5
turboshafts
PV-16 ------?
PV-17 was a US Navy HRP-2 RESCUER
PV-17 ? COMMUTER projected civilian version of HRP-2
PV-17 ? CONNECTOR projected civilian version of HRP-2
PV-17 ? DE LUXE projected civilian version of HRP-2
PD-/PV-18 was a US Navy HUP-1 RETRIEVER production version of PV-14
PV-18 was a US Navy HUP-2 / HUP-3 / HUP-4 RETRIEVER / US Army H-25A ARMY MULE
PV-19 ? may it was a large flying crane helicopter project to compete in YH-17 contest
PV-20 ------?
PH-21 was a civilian same as Model 44A
PD-/PV-22 was a USAF YH-21 WORKHORSE tandem rotor helicopter
- PD-22B HP class ASW helicopter proposal
- PD-22E assault helicopter proposal
- PD-22F HS class ASW helicopter proposal
PH-23 to PH-25 ------?
PH-26 and -26A HP class ASW CONVERTAPLANE helicopter proposal
PH-27 & PH-28 ------?
PH-29 the blueprint was existed,no more details
PH-30 & PH-31 ------?
PH-32 HS class ASW helicopter proposal
PH-33 ------?
PH-34, -34A and -34B assault transport helicopter proposals
PH-35 to PH-37 ------?
PH-38 ? may it was a helicopter project of 1950,with system called Stopped-Lifting,1950
PH-39 ? may it was a compound helicopter project,had a gull-wing,1950
PH-40 ? may small helicopter with pusher propeller in the tail unit,consider a compound design,1951
PH-41 ? may Disc-Rotor helicopter project of 1951
PH-/PV-42 USAF H-21A WORKHORSE military transport helicopter (AV 166)
PV-42 USAF H-21B WORKHORSE redesignated as CH-21B / Canada CH-125
PV-43 US Army H-21C SHAWNEE redesignated as CH-21C
(P)V-44A civilian transport helicopter, a civil version of PV-42 (AV 247,248)
(P)V-44B civilian float version
(P)V-44C civilian
PV-44 US Navy HKP-1 / Canada CH-127
PV-45 was the YH-16A,later given the designation H-27
PV-46 ------?
PH-47 was a HS class ASW helicopter proposal,project
PH-48 ------?
PH-49 was an observation and liaison helicopter (HO class) project
PH-50 ------?
PH-51 was an observation and liaison helicopter (HO class) project
PH-52 & PH-53 ------?
PH-54 ? Retractoplane was a VTOL aircraft,using rotor blades with reverse taper,project
PH-55 Retractoplane was a VTOL aircraft,also using rotor blades with reverse taper,developed from
previous design,project
PH-56 to PH-58 ? may a lightweight utility helicopter concepts,projected to compete Bell XH-40
PH-59 was later renamed as a Piasecki PA.59,after he was forced to leave the company
PH-60 ? may it was a lightweight utility helicopter to compete Bell XH-40
PH-61 was later renamed as a Piasecki PA.61,after he was forced to leave his company
PH-62 ? may it was the YH-16B,re-engined with two 2100 shp Allison T56-A-5 turboshaft engines,project
PV-63 HUP-4 RETRIEVER,was a HUP-2 (PV-18) fitted with an 800 hp R-1820 engine
PV-64 to PV-66 ------?
PV-67 was later renamed as a Piasecki PA.67
PV-68 to PV-70 ------?
PV-71 was a two H-21C re-engined with G.E. T58 turboshafts engines,H-21D
PV-72 & PV-73 ------?
PV-74 (PH-74) was reserved for Canadian helicopter
PV-75 ? Aerodyne may it was a series of VTOL medium transport aircraft projects
V-76 was a USAF VZ-2 experimental tilt-wing VTOL aircraft
V-77 ? may it was a developed version of V-76,project
V-78 & V-79 ------?
V-80,V-81 & V-82 were a USN fast amphibious utility helicopter projects,intended to compete Kaman K-20
V-83 & V-84 ------?
V-85 ? Aerodyne may it was a development of V-75,as a series of VTOL medium transport aircraft projects
V-86 to V-89 ------?
V-90 was a six engined tilt-wing VTOL experimental aircraft.
V-91 ? I think, it was the same as Piasecki PR-107 (PR was the name of the report only),it was a high performance observation and reconnaissance aircraft project,1955/56
V-92 to V-100 ------?
V-101 it was the same as Piasecki PA.101D,a licence built Agusta A.101D
V-102 to V-104 ------?
V-105 was Model-44 fitted with two 825 hp Lycoming T-53 turboshafts,prototype only.
V-106 ------?
V-107 was a US Navy HRB-1 SEA KNIGHT redesignated as CH-46A
V-107 USAF XH-49A redesignated as XCH-46B, then canceled
V-107 Y/HC-1A redesignated as Y/CH-46C
V-107 SEA KNIGHT (US Navy CH-46D,-46E,-46F / HH-,UH-46D / VH-46F)
V-107 Canada CH-113 LABRADOR (107.II-9)
V-107? Canada CH-113A VOYAGEUR
V-107A was a Kawasaki built under licence
BV-107-II-28 was a Sub-variant designation for the Canadian Army Voyageur (later CAF CH-113A)
-- From 1959/60,it was absorbed by Boeing to reform Boeing-Vertol;
V-108 to V-113 ------?
V-114 US Army YCH-1B CHINOOK redesignated as YCH-47A
V-114A US Army HC-1B CHINOOK redesignated as CH-47A (AV 259)
V-114A civilian variant (Type certificate H3EA)
V-114 US Army CH-47B CHINOOK
V-115 to V-118 ------?
V-119 was a tilt-wing VTOL aircraft project,V-119F
V-120 to V-128 ------?
V-129 was a Ground Effect Take-off and Landing (GETOL) Flight Research Vehicle (FRV),1960/62
V-130 ------?
BV-131 was a Light Observation Helicopter project in LOH contenders of 1960
BV-132 to BV-136 ------?
BV-137 was a tri-service VTOL tilt-wing transport project, competing with XC-142A (SS-478A),1961
BV-138 to BV-140 ------?
BV-141 proposed USMC V-114 from 1962
BV-142 ? maybe a large Chinook version,need confirm
BV-143 was an ACH-47A armed enemy suppression CHINOOK with externally mounted 20mm cannon, nose turret with grenade launcher and miniguns
BV-144 ------?
BV-145 was a CH-47D CHINOOK version with T55-L-712 engines
BV-146 ------?
BV-147 was a tilt-wing VTOL aircraft,projected for AAFSS,1965
BV-148 ? may it was a tandem two-seat attack helicopter project,could be for AAFSS also,1965
BV-149 ? may it was a light compound helicopter with low-wing and shrouded ducted tail rotor,1966
BV-150 was a tilt-wing/tilt-rotor airplane studies,1966
BV-151 to BV-156 ------?
BV-157 was a smaller inter-city helicopter project based on Chinook
BV-158 & BV-159 ------?
BV-160 was a tilt-rotor VTOL aircraft project,with high wing
BV-161 to BV-164 -----?
BV-165 was Australia CH-47C Chinook
BV-166 was a Very Heavy Lift VHL warm-cycle helicopter project (166-006)
BV-167 was a larger inter-city helicopter project based on Chinook
BV-168 & BV-169 ------?
BV-170 was a four engined tilt-high-wing VTOL transport aircraft project,intended for LIT competition
BV-171 & BV-172 ------?
BV-173 was a Canada CH-147 Chinook
BV-174 & BV-175 ------?
BV-176 was a Spain HT.17 export CH-47C Chinook
BV-177 was an advanced civil Chinook with non-overlapped,tandem 70 ft dia, rotors,1966
BV-178 ------?
BV-179 was a US Army YUH-61A UTTAS multirole helicopter
BV-179 civilian projected,a civilian version of UH-61
BV-180 possible designation of Lift/Cruise Fan Technology V/STOL Research Airplane (a modified T-39)
BV-181 ? may it was a HELIJET Lateral Twin Folding Rotor V/STOL Aircraft evaluated by ONR/Army,1968
BV-182 ? may it was a Rotafix VTOL transport concept. Rotors are single blade/counterweight and when stopped,
act as a wingtip extension
BV-183 ? may it was an extended span wing aircraft,powered by four engines
BV-184 to BV-188 ------?
BV-189 was a Sea Control Fighter System Development Proposal,1972
BV-190 to BV-209 ------?
BV-210 probable designation of various V/STOL studies
BV-211 ------?
BV-212 was an Italian-licensed CH-47C by Elicotteri Meridionali
BV-213 was a V/STOL Tilt/Stowed-Rotor aircraft project
BV-214 ------?
BV-215 was a tilt-rotor VTOL transport aircraft project
BV-216 proposed USMC Model-347 HLH,1970
BV-217 & BV-218 ------?
BV-219 was a Chinook various designs
BV-220 & BV-221 ------?
BV-222 was a tilt-rotor project using the fuselage, tail and undercarriage of a Mitsubishi MU-2J, engines
in wing-tip pods
BV-223 to BV-226 ------?
BV-227 was a heavy flying crane helicopter project
BV-228 to BV-233 ------?
BV-234 was a US Army CH-47C Chinook and civilian version
BV-234ER civilian extended range version
BV-234LR civilian long-range version
BV-234MLR civilian long-range version
BV-234UT civilian ultility version
BV-234-68 projected stretched version of Model 234
BV-235 was a US Army AAH contender, mock-up only
BV-236 ------?
BV-237 was a LAMPS III competitor of S-70L
BV-237/II may it was re-allocated to a flying crane helicopter project
BV-238 was a tilt-rotor VTOL transport project
BV-239 to BV-296 ------?
BV-297 was a LAMPS III competitor of S-70L,powered by three turboshaft engines
BV-298 was a 100-passenger heavy lift and flying crane helicopter project
BV-299 was a flying crane project with payload 3-4 tons higher than Model 298
BV-300 ------?
BV-301 was a US Army XCH-62A HLH (Heavy Lift Helicopter) winner, later canceled
BV-302 to BV-306 ------?
BV-307 was a projected stretched version of Model 234 for 225 passengers
BV-308 was Argentine version of CH-47C Chinook for Argentine Air Force
BV-309 was Argentine version of CH-47C Chinook built in Italy, some for Argentine Army
BV-309/II ? may it was a Canadian, CH-147 Chinook, no details as to difference with BV-173
BV-310 to BV-339 ------?
BV-340 was a possible designation of Quiet Short Haul Research Aircraft / USB Propulsive-Lift Aircraft
BV-341 to BV-346 ------?
BV-347 was an Experimental CH-47A derivative with wings, extended fuselage, 4-bladed rotors, etc.
BV-348 to BV-351 ------?
BV-352 was a CH-47C, Royal Air Force Chinook HC.1
BV-353 to BV-359 ------?
BV-360 was a 1987 Advanced Technology Demonstrator; aka CH-46X
BV-361 to BV-413 ------?
BV-414 was a Chinook international military version of CH-47D
BV-414-100 was an Updated 'International Chinook' development
BV-415
- To be continued