McDonnell XHCH

{{Short description|Proposed helicopter}}  {{Infobox aircraft | name = XHCH | logo = | logo_size = | image = | alt = | caption = | long_caption = | other_names = | aircraft_type = [[Aerial crane]] [[helicopter]] | aim = | outcome = | related = | national_origin = United States | manufacturer = [[McDonnell Aircraft]] | design_group = | designer = | builder = | issuer = | status = Cancelled; mockup phase only | owners = | primary_user = [[United States Navy]] | more_users = | service = | major_applications = | proposals = | prototypes = | number_built = | construction_number = | civil_registration = | military_serial = | radio_code = | requirement = | aircraft_carried = | flights = | total_hours = | total_distance = | construction_date = | introduction = | retired = | first_flight = | initiated = | in_service = | last_flight = | expected = | developed_from = | variants = | developed_into = | preservation = | fate = | predecessors = | successors = | concluded = }}

The '''McDonnell XHCH''' ('''Model 86''') was a 1950s [[aerial crane]] helicopter proposal for the United States Navy by the McDonnell Corporation.

==Development== The XHCH was developed in the early 1950s to meet a US Navy requirement for a helicopter capable of carrying supplies and ammunition between ships and carrying heavy loads for short distances from ship-to-shore or from marshalling areas ashore to front-line units. Three prototypes (BuNos 138654/138656) were ordered, and a full-size mockup was inspected in May 1953. However, budget cuts forced the Navy to cancel the XHCH-1 project on January 18, 1959, without a prototype being built.<ref name="Francillon">{{cite book |last1=Francillon |first1=Rene |title=McDonnell Douglas aircraft since 1920. Volume II |date=1990 |publisher=Putnam Aeronautical |isbn=978-0-85177-828-0 |edition=2nd }}</ref>

==Specifications (XHCH estimated)== [[File:McDonnell XHCH-1 3-view line drawing.png|600px|right|3-view line drawing of the McDonnell XHCH-1]]

{{Aircraft specs |ref=McDonnell Douglas aircraft since 1920. Volume II<ref name="Francillon"/> |prime units?=imp  |crew=two |capacity=30 troops ''or'' 24 stretchers |length m=11.45 |height m=5.07 |empty weight kg=6749 |gross weight kg=16026 |max takeoff weight kg=19051 |fuel capacity= |more general=  |eng1 number=2 |eng1 name=[[Allison T56]] |eng1 type=gas turbine compressed air generator engines |eng1 shp=3750

|eng2 number=3 |eng2 name=McDonnell 12JP20 |eng2 type=cold pressure jets |eng2 lbf=1600

|rot number=1 |rot dia ft=65 |rot area sqft=3320  |max speed mph=115 |max speed note=at sea level |cruise speed kmh= |cruise speed mph= |cruise speed kts= |cruise speed note= |never exceed speed kmh= |never exceed speed mph= |never exceed speed kts= |never exceed speed note= |range km= |combat range km=37 |combat range miles= |combat range nmi= |combat range note= |ferry range km= |ferry range miles= |ferry range nmi= |ferry range note= |endurance= |ceiling m=2285 |ceiling note=hover ceiling out of ground effect |climb rate ms=16 |time to altitude= |disk loading kg/m2= |disk loading lb/sqft= |disk loading note= |fuel consumption kg/km= |fuel consumption lb/mi= |power/mass= |more performance= |avionics= }}

==References== {{reflist}}

[[Category:United States military helicopters]] [[Category:1950s United States helicopters]] [[Category:McDonnell aircraft|HCH]] [[Category:Tipjet-powered helicopters]] [[Category:Twin-turbine helicopters]] [[Category:Cancelled military aircraft projects of the United States]] [[Category:Single-rotor helicopters]] [[Category:Aircraft with fixed conventional landing gear]]